| Message ID | 20210612133134.2738-5-peng.fan@oss.nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | soc: imx: add i.MX BLK-CTL support | expand |
On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: > > From: Peng Fan <peng.fan@nxp.com> > > The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add > that support in this driver. > > Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > Signed-off-by: Peng Fan <peng.fan@nxp.com> Maybe my TF-A is too old, but I am not able to wake the device from suspend-to-ram with this series. I used the device tree from [1] to enable both the GPCv2 and the blk-ctl stuff. [1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210604111005.6804-1-peng.fan@oss.nxp.com/ I based both off Shawn's for-next branch. adam > --- > drivers/soc/imx/Makefile | 2 +- > drivers/soc/imx/blk-ctl-imx8mm.c | 139 +++++++++++++++++++++++++++++++ > 2 files changed, 140 insertions(+), 1 deletion(-) > create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c > > diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile > index d3d2b49a386c..c260b962f495 100644 > --- a/drivers/soc/imx/Makefile > +++ b/drivers/soc/imx/Makefile > @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o > endif > obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o > obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o > -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o blk-ctl-imx8mm.o > diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c b/drivers/soc/imx/blk-ctl-imx8mm.c > new file mode 100644 > index 000000000000..59443588f892 > --- /dev/null > +++ b/drivers/soc/imx/blk-ctl-imx8mm.c > @@ -0,0 +1,139 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright 2021 NXP > + */ > + > +#include <dt-bindings/clock/imx8mm-clock.h> > +#include <dt-bindings/power/imx8mm-power.h> > +#include <linux/clk.h> > +#include <linux/err.h> > +#include <linux/io.h> > +#include <linux/module.h> > +#include <linux/mutex.h> > +#include <linux/of_address.h> > +#include <linux/of_device.h> > +#include <linux/platform_device.h> > +#include <linux/slab.h> > +#include <linux/types.h> > +#include <linux/pm_domain.h> > +#include <linux/regmap.h> > + > +#include "blk-ctl.h" > + > +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN BIT(6) > +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN BIT(5) > +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN BIT(4) > +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN BIT(3) > +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN GENMASK(2, 0) > + > +#define MEDIA_BLK_BUS_PD_MASK BIT(12) > +#define MEDIA_BLK_MIPI_CSI_PD_MASK GENMASK(11, 10) > +#define MEDIA_BLK_MIPI_DSI_PD_MASK GENMASK(9, 8) > +#define MEDIA_BLK_LCDIF_PD_MASK GENMASK(7, 6) > +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK GENMASK(5, 0) > + > +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { > + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, > + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, MEDIA_BLK_CSI_BRIDGE_SFT_EN, > + IMX_BLK_CTL_PD_RESET), > + IMX_BLK_CTL_PD("LCDIF", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, > + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), > + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, > + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, > + IMX_BLK_CTL_PD_RESET), > + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, > + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, > + MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, > + IMX_BLK_CTL_PD_RESET), > + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, > + MEDIA_BLK_BUS_PD_MASK, 0, MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, > + IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) > +}; > + > +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { > + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, > + BIT(0), 0, BIT(0), IMX_BLK_CTL_PD_RESET), > + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, > + BIT(1), 0, BIT(1), IMX_BLK_CTL_PD_RESET), > + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, > + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_RESET), > + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, > + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) > +}; > + > +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { > + .reg_bits = 32, > + .reg_stride = 4, > + .val_bits = 32, > + .max_register = 0x30, > + .fast_io = true, > +}; > + > +static const struct imx_blk_ctl_dev_data imx8mm_vpumix_blk_ctl_dev_data = { > + .pds = imx8mm_vpumix_blk_ctl_pds, > + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), > + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, > + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], > + .config = imx8mm_blk_ctl_regmap_config, > + .name = "imx-vpumix-blk-ctl", > +}; > + > +static const struct imx_blk_ctl_dev_data imx8mm_dispmix_blk_ctl_dev_data = { > + .pds = imx8mm_dispmix_blk_ctl_pds, > + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), > + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, > + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], > + .config = imx8mm_blk_ctl_regmap_config, > + .name = "imx-dispmix-blk-ctl", > +}; > + > +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + const struct imx_blk_ctl_dev_data *dev_data = of_device_get_match_data(dev); > + struct regmap *regmap; > + struct imx_blk_ctl *ctl; > + void __iomem *base; > + > + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); > + if (!ctl) > + return -ENOMEM; > + > + base = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(base)) > + return PTR_ERR(base); > + > + regmap = devm_regmap_init_mmio(dev, base, &dev_data->config); > + if (IS_ERR(regmap)) > + return PTR_ERR(regmap); > + > + ctl->regmap = regmap; > + ctl->dev = dev; > + mutex_init(&ctl->lock); > + > + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); > + if (ctl->num_clks < 0) > + return ctl->num_clks; > + > + dev_set_drvdata(dev, ctl); > + ctl->dev_data = dev_data; > + > + return imx_blk_ctl_register(dev); > +} > + > +static const struct of_device_id imx_blk_ctl_of_match[] = { > + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = &imx8mm_vpumix_blk_ctl_dev_data }, > + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = &imx8mm_dispmix_blk_ctl_dev_data }, > + { /* Sentinel */ } > +}; > +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); > + > +static struct platform_driver imx_blk_ctl_driver = { > + .probe = imx8mm_blk_ctl_probe, > + .driver = { > + .name = "imx8mm-blk-ctl", > + .of_match_table = of_match_ptr(imx_blk_ctl_of_match), > + .pm = &imx_blk_ctl_pm_ops, > + }, > +}; > +module_platform_driver(imx_blk_ctl_driver); > -- > 2.30.0 >
On Mon, Jun 14, 2021 at 1:07 PM Adam Ford <aford173@gmail.com> wrote: > > On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: > > > > From: Peng Fan <peng.fan@nxp.com> > > > > The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add > > that support in this driver. > > > > Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > > Maybe my TF-A is too old, but I am not able to wake the device from > suspend-to-ram with this series. I used the device tree from [1] to > enable both the GPCv2 and the blk-ctl stuff. > > [1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210604111005.6804-1-peng.fan@oss.nxp.com/ > > I based both off Shawn's for-next branch. I tried to enable USB with the GPCv2 stuff pulled into Shawn's for-next branch, and my board hangs when USB is loaded, but USB doesn't use blk-ctl, it just uses GPCv2. I looked at some of the changes with GPCv2, and I noticed a comment in the GPCv2 function called imx_pgc_power_up. The comment reads: /* * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, reg_val, * (reg_val & domain->bits.hskack), 0, * USEC_PER_MSEC); * Technically we need the commented code to wait handshake. But that needs * the BLK-CTL module BUS clk-en bit being set. * * There is a separate BLK-CTL module and we will have such a driver for it, * that driver will set the BUS clk-en bit and handshake will be triggered * automatically there. Just add a delay and suppose the handshake finish * after that. */ I didn't see a delay here despite the comment saying we should add one. With the blk-ctl enabled, I attempted to uncomment the above line of code without much success in preventing the board from hanging. If BUS clk-en bit needs to be set in order for the handshake to work, should all these power domains reference it to bring it up? If we decide against using the BUS clk-en bit, what should this delay be? adam > > adam > > > --- > > drivers/soc/imx/Makefile | 2 +- > > drivers/soc/imx/blk-ctl-imx8mm.c | 139 +++++++++++++++++++++++++++++++ > > 2 files changed, 140 insertions(+), 1 deletion(-) > > create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c > > > > diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile > > index d3d2b49a386c..c260b962f495 100644 > > --- a/drivers/soc/imx/Makefile > > +++ b/drivers/soc/imx/Makefile > > @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o > > endif > > obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o > > obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o > > -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > > +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o blk-ctl-imx8mm.o > > diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c b/drivers/soc/imx/blk-ctl-imx8mm.c > > new file mode 100644 > > index 000000000000..59443588f892 > > --- /dev/null > > +++ b/drivers/soc/imx/blk-ctl-imx8mm.c > > @@ -0,0 +1,139 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Copyright 2021 NXP > > + */ > > + > > +#include <dt-bindings/clock/imx8mm-clock.h> > > +#include <dt-bindings/power/imx8mm-power.h> > > +#include <linux/clk.h> > > +#include <linux/err.h> > > +#include <linux/io.h> > > +#include <linux/module.h> > > +#include <linux/mutex.h> > > +#include <linux/of_address.h> > > +#include <linux/of_device.h> > > +#include <linux/platform_device.h> > > +#include <linux/slab.h> > > +#include <linux/types.h> > > +#include <linux/pm_domain.h> > > +#include <linux/regmap.h> > > + > > +#include "blk-ctl.h" > > + > > +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN BIT(6) > > +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN BIT(5) > > +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN BIT(4) > > +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN BIT(3) > > +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN GENMASK(2, 0) > > + > > +#define MEDIA_BLK_BUS_PD_MASK BIT(12) > > +#define MEDIA_BLK_MIPI_CSI_PD_MASK GENMASK(11, 10) > > +#define MEDIA_BLK_MIPI_DSI_PD_MASK GENMASK(9, 8) > > +#define MEDIA_BLK_LCDIF_PD_MASK GENMASK(7, 6) > > +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK GENMASK(5, 0) > > + > > +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { > > + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, > > + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, MEDIA_BLK_CSI_BRIDGE_SFT_EN, > > + IMX_BLK_CTL_PD_RESET), > > + IMX_BLK_CTL_PD("LCDIF", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, > > + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), > > + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, > > + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, > > + IMX_BLK_CTL_PD_RESET), > > + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, > > + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, > > + MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, > > + IMX_BLK_CTL_PD_RESET), > > + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, > > + MEDIA_BLK_BUS_PD_MASK, 0, MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, > > + IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) > > +}; > > + > > +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { > > + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, > > + BIT(0), 0, BIT(0), IMX_BLK_CTL_PD_RESET), > > + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, > > + BIT(1), 0, BIT(1), IMX_BLK_CTL_PD_RESET), > > + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, > > + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_RESET), > > + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, > > + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) > > +}; > > + > > +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { > > + .reg_bits = 32, > > + .reg_stride = 4, > > + .val_bits = 32, > > + .max_register = 0x30, > > + .fast_io = true, > > +}; > > + > > +static const struct imx_blk_ctl_dev_data imx8mm_vpumix_blk_ctl_dev_data = { > > + .pds = imx8mm_vpumix_blk_ctl_pds, > > + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), > > + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, > > + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], > > + .config = imx8mm_blk_ctl_regmap_config, > > + .name = "imx-vpumix-blk-ctl", > > +}; > > + > > +static const struct imx_blk_ctl_dev_data imx8mm_dispmix_blk_ctl_dev_data = { > > + .pds = imx8mm_dispmix_blk_ctl_pds, > > + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), > > + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, > > + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], > > + .config = imx8mm_blk_ctl_regmap_config, > > + .name = "imx-dispmix-blk-ctl", > > +}; > > + > > +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) > > +{ > > + struct device *dev = &pdev->dev; > > + const struct imx_blk_ctl_dev_data *dev_data = of_device_get_match_data(dev); > > + struct regmap *regmap; > > + struct imx_blk_ctl *ctl; > > + void __iomem *base; > > + > > + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); > > + if (!ctl) > > + return -ENOMEM; > > + > > + base = devm_platform_ioremap_resource(pdev, 0); > > + if (IS_ERR(base)) > > + return PTR_ERR(base); > > + > > + regmap = devm_regmap_init_mmio(dev, base, &dev_data->config); > > + if (IS_ERR(regmap)) > > + return PTR_ERR(regmap); > > + > > + ctl->regmap = regmap; > > + ctl->dev = dev; > > + mutex_init(&ctl->lock); > > + > > + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); > > + if (ctl->num_clks < 0) > > + return ctl->num_clks; > > + > > + dev_set_drvdata(dev, ctl); > > + ctl->dev_data = dev_data; > > + > > + return imx_blk_ctl_register(dev); > > +} > > + > > +static const struct of_device_id imx_blk_ctl_of_match[] = { > > + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = &imx8mm_vpumix_blk_ctl_dev_data }, > > + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = &imx8mm_dispmix_blk_ctl_dev_data }, > > + { /* Sentinel */ } > > +}; > > +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); > > + > > +static struct platform_driver imx_blk_ctl_driver = { > > + .probe = imx8mm_blk_ctl_probe, > > + .driver = { > > + .name = "imx8mm-blk-ctl", > > + .of_match_table = of_match_ptr(imx_blk_ctl_of_match), > > + .pm = &imx_blk_ctl_pm_ops, > > + }, > > +}; > > +module_platform_driver(imx_blk_ctl_driver); > > -- > > 2.30.0 > >
On 2021/6/15 3:29, Adam Ford wrote: > On Mon, Jun 14, 2021 at 1:07 PM Adam Ford <aford173@gmail.com> wrote: >> >> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: >>> >>> From: Peng Fan <peng.fan@nxp.com> >>> >>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add >>> that support in this driver. >>> >>> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> >>> Signed-off-by: Peng Fan <peng.fan@nxp.com> >> >> Maybe my TF-A is too old, but I am not able to wake the device from >> suspend-to-ram with this series. I used the device tree from [1] to >> enable both the GPCv2 and the blk-ctl stuff. >> >> [1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210604111005.6804-1-peng.fan@oss.nxp.com/ >> >> I based both off Shawn's for-next branch. > > I tried to enable USB with the GPCv2 stuff pulled into Shawn's > for-next branch, and my board hangs when USB is loaded, but USB > doesn't use blk-ctl, it just uses GPCv2. > > I looked at some of the changes with GPCv2, and I noticed a comment in > the GPCv2 function called imx_pgc_power_up. The comment reads: > > /* > * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, reg_val, > * (reg_val & domain->bits.hskack), 0, > * USEC_PER_MSEC); > * Technically we need the commented code to wait handshake. But that needs > * the BLK-CTL module BUS clk-en bit being set. > * > * There is a separate BLK-CTL module and we will have such a driver for it, > * that driver will set the BUS clk-en bit and handshake will be triggered > * automatically there. Just add a delay and suppose the handshake finish > * after that. > */ > > I didn't see a delay here despite the comment saying we should add one. > > With the blk-ctl enabled, I attempted to uncomment the above line of > code without much success in preventing the board from hanging. > > If BUS clk-en bit needs to be set in order for the handshake to work, > should all these power domains reference it to bring it up? If we > decide against using the BUS clk-en bit, what should this delay be? It is only for power domain has mix and need delay for the handshake. USB no need that handshake. Could you post a github branch, then I could give a look? Thanks, Peng. > > adam >> >> adam >> >>> --- >>> drivers/soc/imx/Makefile | 2 +- >>> drivers/soc/imx/blk-ctl-imx8mm.c | 139 +++++++++++++++++++++++++++++++ >>> 2 files changed, 140 insertions(+), 1 deletion(-) >>> create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c >>> >>> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile >>> index d3d2b49a386c..c260b962f495 100644 >>> --- a/drivers/soc/imx/Makefile >>> +++ b/drivers/soc/imx/Makefile >>> @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o >>> endif >>> obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o >>> obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o >>> -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o >>> +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o blk-ctl-imx8mm.o >>> diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c b/drivers/soc/imx/blk-ctl-imx8mm.c >>> new file mode 100644 >>> index 000000000000..59443588f892 >>> --- /dev/null >>> +++ b/drivers/soc/imx/blk-ctl-imx8mm.c >>> @@ -0,0 +1,139 @@ >>> +// SPDX-License-Identifier: GPL-2.0 >>> +/* >>> + * Copyright 2021 NXP >>> + */ >>> + >>> +#include <dt-bindings/clock/imx8mm-clock.h> >>> +#include <dt-bindings/power/imx8mm-power.h> >>> +#include <linux/clk.h> >>> +#include <linux/err.h> >>> +#include <linux/io.h> >>> +#include <linux/module.h> >>> +#include <linux/mutex.h> >>> +#include <linux/of_address.h> >>> +#include <linux/of_device.h> >>> +#include <linux/platform_device.h> >>> +#include <linux/slab.h> >>> +#include <linux/types.h> >>> +#include <linux/pm_domain.h> >>> +#include <linux/regmap.h> >>> + >>> +#include "blk-ctl.h" >>> + >>> +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN BIT(6) >>> +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN BIT(5) >>> +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN BIT(4) >>> +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN BIT(3) >>> +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN GENMASK(2, 0) >>> + >>> +#define MEDIA_BLK_BUS_PD_MASK BIT(12) >>> +#define MEDIA_BLK_MIPI_CSI_PD_MASK GENMASK(11, 10) >>> +#define MEDIA_BLK_MIPI_DSI_PD_MASK GENMASK(9, 8) >>> +#define MEDIA_BLK_LCDIF_PD_MASK GENMASK(7, 6) >>> +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK GENMASK(5, 0) >>> + >>> +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { >>> + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, >>> + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, MEDIA_BLK_CSI_BRIDGE_SFT_EN, >>> + IMX_BLK_CTL_PD_RESET), >>> + IMX_BLK_CTL_PD("LCDIF", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, >>> + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), >>> + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, >>> + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, >>> + IMX_BLK_CTL_PD_RESET), >>> + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, >>> + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, >>> + MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, >>> + IMX_BLK_CTL_PD_RESET), >>> + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, >>> + MEDIA_BLK_BUS_PD_MASK, 0, MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, >>> + IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) >>> +}; >>> + >>> +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, >>> + BIT(0), 0, BIT(0), IMX_BLK_CTL_PD_RESET), >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, >>> + BIT(1), 0, BIT(1), IMX_BLK_CTL_PD_RESET), >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, >>> + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_RESET), >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, >>> + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) >>> +}; >>> + >>> +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { >>> + .reg_bits = 32, >>> + .reg_stride = 4, >>> + .val_bits = 32, >>> + .max_register = 0x30, >>> + .fast_io = true, >>> +}; >>> + >>> +static const struct imx_blk_ctl_dev_data imx8mm_vpumix_blk_ctl_dev_data = { >>> + .pds = imx8mm_vpumix_blk_ctl_pds, >>> + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), >>> + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, >>> + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], >>> + .config = imx8mm_blk_ctl_regmap_config, >>> + .name = "imx-vpumix-blk-ctl", >>> +}; >>> + >>> +static const struct imx_blk_ctl_dev_data imx8mm_dispmix_blk_ctl_dev_data = { >>> + .pds = imx8mm_dispmix_blk_ctl_pds, >>> + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), >>> + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, >>> + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], >>> + .config = imx8mm_blk_ctl_regmap_config, >>> + .name = "imx-dispmix-blk-ctl", >>> +}; >>> + >>> +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) >>> +{ >>> + struct device *dev = &pdev->dev; >>> + const struct imx_blk_ctl_dev_data *dev_data = of_device_get_match_data(dev); >>> + struct regmap *regmap; >>> + struct imx_blk_ctl *ctl; >>> + void __iomem *base; >>> + >>> + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); >>> + if (!ctl) >>> + return -ENOMEM; >>> + >>> + base = devm_platform_ioremap_resource(pdev, 0); >>> + if (IS_ERR(base)) >>> + return PTR_ERR(base); >>> + >>> + regmap = devm_regmap_init_mmio(dev, base, &dev_data->config); >>> + if (IS_ERR(regmap)) >>> + return PTR_ERR(regmap); >>> + >>> + ctl->regmap = regmap; >>> + ctl->dev = dev; >>> + mutex_init(&ctl->lock); >>> + >>> + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); >>> + if (ctl->num_clks < 0) >>> + return ctl->num_clks; >>> + >>> + dev_set_drvdata(dev, ctl); >>> + ctl->dev_data = dev_data; >>> + >>> + return imx_blk_ctl_register(dev); >>> +} >>> + >>> +static const struct of_device_id imx_blk_ctl_of_match[] = { >>> + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = &imx8mm_vpumix_blk_ctl_dev_data }, >>> + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = &imx8mm_dispmix_blk_ctl_dev_data }, >>> + { /* Sentinel */ } >>> +}; >>> +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); >>> + >>> +static struct platform_driver imx_blk_ctl_driver = { >>> + .probe = imx8mm_blk_ctl_probe, >>> + .driver = { >>> + .name = "imx8mm-blk-ctl", >>> + .of_match_table = of_match_ptr(imx_blk_ctl_of_match), >>> + .pm = &imx_blk_ctl_pm_ops, >>> + }, >>> +}; >>> +module_platform_driver(imx_blk_ctl_driver); >>> -- >>> 2.30.0 >>>
On Tue, Jun 15, 2021 at 6:05 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: > > > On 2021/6/15 3:29, Adam Ford wrote: > > On Mon, Jun 14, 2021 at 1:07 PM Adam Ford <aford173@gmail.com> wrote: > >> > >> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: > >>> > >>> From: Peng Fan <peng.fan@nxp.com> > >>> > >>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add > >>> that support in this driver. > >>> > >>> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > >>> Signed-off-by: Peng Fan <peng.fan@nxp.com> > >> > >> Maybe my TF-A is too old, but I am not able to wake the device from > >> suspend-to-ram with this series. I used the device tree from [1] to > >> enable both the GPCv2 and the blk-ctl stuff. > >> > >> [1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210604111005.6804-1-peng.fan@oss.nxp.com/ > >> > >> I based both off Shawn's for-next branch. > > > > I tried to enable USB with the GPCv2 stuff pulled into Shawn's > > for-next branch, and my board hangs when USB is loaded, but USB > > doesn't use blk-ctl, it just uses GPCv2. > > > > I looked at some of the changes with GPCv2, and I noticed a comment in > > the GPCv2 function called imx_pgc_power_up. The comment reads: > > > > /* > > * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, reg_val, > > * (reg_val & domain->bits.hskack), 0, > > * USEC_PER_MSEC); > > * Technically we need the commented code to wait handshake. But that needs > > * the BLK-CTL module BUS clk-en bit being set. > > * > > * There is a separate BLK-CTL module and we will have such a driver for it, > > * that driver will set the BUS clk-en bit and handshake will be triggered > > * automatically there. Just add a delay and suppose the handshake finish > > * after that. > > */ > > > > I didn't see a delay here despite the comment saying we should add one. > > > > With the blk-ctl enabled, I attempted to uncomment the above line of > > code without much success in preventing the board from hanging. > > > > If BUS clk-en bit needs to be set in order for the handshake to work, > > should all these power domains reference it to bring it up? If we > > decide against using the BUS clk-en bit, what should this delay be? > > It is only for power domain has mix and need delay for the handshake. > USB no need that handshake. Don't the OTG domains depend on hsiomix? > > Could you post a github branch, then I could give a look? No problem. https://github.com/aford173/linux/tree/for-next thanks adam > > Thanks, > Peng. > > > > > adam > >> > >> adam > >> > >>> --- > >>> drivers/soc/imx/Makefile | 2 +- > >>> drivers/soc/imx/blk-ctl-imx8mm.c | 139 +++++++++++++++++++++++++++++++ > >>> 2 files changed, 140 insertions(+), 1 deletion(-) > >>> create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c > >>> > >>> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile > >>> index d3d2b49a386c..c260b962f495 100644 > >>> --- a/drivers/soc/imx/Makefile > >>> +++ b/drivers/soc/imx/Makefile > >>> @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o > >>> endif > >>> obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o > >>> obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o > >>> -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > >>> +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o blk-ctl-imx8mm.o > >>> diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c b/drivers/soc/imx/blk-ctl-imx8mm.c > >>> new file mode 100644 > >>> index 000000000000..59443588f892 > >>> --- /dev/null > >>> +++ b/drivers/soc/imx/blk-ctl-imx8mm.c > >>> @@ -0,0 +1,139 @@ > >>> +// SPDX-License-Identifier: GPL-2.0 > >>> +/* > >>> + * Copyright 2021 NXP > >>> + */ > >>> + > >>> +#include <dt-bindings/clock/imx8mm-clock.h> > >>> +#include <dt-bindings/power/imx8mm-power.h> > >>> +#include <linux/clk.h> > >>> +#include <linux/err.h> > >>> +#include <linux/io.h> > >>> +#include <linux/module.h> > >>> +#include <linux/mutex.h> > >>> +#include <linux/of_address.h> > >>> +#include <linux/of_device.h> > >>> +#include <linux/platform_device.h> > >>> +#include <linux/slab.h> > >>> +#include <linux/types.h> > >>> +#include <linux/pm_domain.h> > >>> +#include <linux/regmap.h> > >>> + > >>> +#include "blk-ctl.h" > >>> + > >>> +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN BIT(6) > >>> +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN BIT(5) > >>> +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN BIT(4) > >>> +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN BIT(3) > >>> +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN GENMASK(2, 0) > >>> + > >>> +#define MEDIA_BLK_BUS_PD_MASK BIT(12) > >>> +#define MEDIA_BLK_MIPI_CSI_PD_MASK GENMASK(11, 10) > >>> +#define MEDIA_BLK_MIPI_DSI_PD_MASK GENMASK(9, 8) > >>> +#define MEDIA_BLK_LCDIF_PD_MASK GENMASK(7, 6) > >>> +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK GENMASK(5, 0) > >>> + > >>> +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { > >>> + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, > >>> + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, MEDIA_BLK_CSI_BRIDGE_SFT_EN, > >>> + IMX_BLK_CTL_PD_RESET), > >>> + IMX_BLK_CTL_PD("LCDIF", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, > >>> + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), > >>> + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, > >>> + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, > >>> + IMX_BLK_CTL_PD_RESET), > >>> + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, > >>> + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, > >>> + MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, > >>> + IMX_BLK_CTL_PD_RESET), > >>> + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, > >>> + MEDIA_BLK_BUS_PD_MASK, 0, MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, > >>> + IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) > >>> +}; > >>> + > >>> +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, > >>> + BIT(0), 0, BIT(0), IMX_BLK_CTL_PD_RESET), > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, > >>> + BIT(1), 0, BIT(1), IMX_BLK_CTL_PD_RESET), > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, > >>> + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_RESET), > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, > >>> + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) > >>> +}; > >>> + > >>> +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { > >>> + .reg_bits = 32, > >>> + .reg_stride = 4, > >>> + .val_bits = 32, > >>> + .max_register = 0x30, > >>> + .fast_io = true, > >>> +}; > >>> + > >>> +static const struct imx_blk_ctl_dev_data imx8mm_vpumix_blk_ctl_dev_data = { > >>> + .pds = imx8mm_vpumix_blk_ctl_pds, > >>> + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), > >>> + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, > >>> + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], > >>> + .config = imx8mm_blk_ctl_regmap_config, > >>> + .name = "imx-vpumix-blk-ctl", > >>> +}; > >>> + > >>> +static const struct imx_blk_ctl_dev_data imx8mm_dispmix_blk_ctl_dev_data = { > >>> + .pds = imx8mm_dispmix_blk_ctl_pds, > >>> + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), > >>> + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, > >>> + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], > >>> + .config = imx8mm_blk_ctl_regmap_config, > >>> + .name = "imx-dispmix-blk-ctl", > >>> +}; > >>> + > >>> +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) > >>> +{ > >>> + struct device *dev = &pdev->dev; > >>> + const struct imx_blk_ctl_dev_data *dev_data = of_device_get_match_data(dev); > >>> + struct regmap *regmap; > >>> + struct imx_blk_ctl *ctl; > >>> + void __iomem *base; > >>> + > >>> + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); > >>> + if (!ctl) > >>> + return -ENOMEM; > >>> + > >>> + base = devm_platform_ioremap_resource(pdev, 0); > >>> + if (IS_ERR(base)) > >>> + return PTR_ERR(base); > >>> + > >>> + regmap = devm_regmap_init_mmio(dev, base, &dev_data->config); > >>> + if (IS_ERR(regmap)) > >>> + return PTR_ERR(regmap); > >>> + > >>> + ctl->regmap = regmap; > >>> + ctl->dev = dev; > >>> + mutex_init(&ctl->lock); > >>> + > >>> + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); > >>> + if (ctl->num_clks < 0) > >>> + return ctl->num_clks; > >>> + > >>> + dev_set_drvdata(dev, ctl); > >>> + ctl->dev_data = dev_data; > >>> + > >>> + return imx_blk_ctl_register(dev); > >>> +} > >>> + > >>> +static const struct of_device_id imx_blk_ctl_of_match[] = { > >>> + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = &imx8mm_vpumix_blk_ctl_dev_data }, > >>> + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = &imx8mm_dispmix_blk_ctl_dev_data }, > >>> + { /* Sentinel */ } > >>> +}; > >>> +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); > >>> + > >>> +static struct platform_driver imx_blk_ctl_driver = { > >>> + .probe = imx8mm_blk_ctl_probe, > >>> + .driver = { > >>> + .name = "imx8mm-blk-ctl", > >>> + .of_match_table = of_match_ptr(imx_blk_ctl_of_match), > >>> + .pm = &imx_blk_ctl_pm_ops, > >>> + }, > >>> +}; > >>> +module_platform_driver(imx_blk_ctl_driver); > >>> -- > >>> 2.30.0 > >>>
> Subject: Re: [PATCH V7 4/4] soc: imx: Add blk-ctl driver for i.MX8MM > > On Tue, Jun 15, 2021 at 6:05 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > wrote: > > > > > > On 2021/6/15 3:29, Adam Ford wrote: > > > On Mon, Jun 14, 2021 at 1:07 PM Adam Ford <aford173@gmail.com> > wrote: > > >> > > >> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > wrote: > > >>> > > >>> From: Peng Fan <peng.fan@nxp.com> > > >>> > > >>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we > add > > >>> that support in this driver. > > >>> > > >>> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > > >>> Signed-off-by: Peng Fan <peng.fan@nxp.com> > > >> > > >> Maybe my TF-A is too old, but I am not able to wake the device from > > >> suspend-to-ram with this series. I used the device tree from [1] > > >> to enable both the GPCv2 and the blk-ctl stuff. > > >> > > >> [1] - > > >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fp > > >> > atchwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Fpatch%2F20210604 > > >> > 111005.6804-1-peng.fan%40oss.nxp.com%2F&data=04%7C01%7Cpeng. > fan > > >> %40nxp.com%7C29fe5fa2af704121c2d508d930b25126%7C686ea1d3bc > 2b4c6fa92 > > >> > cd99c5c301635%7C0%7C0%7C637594364693096718%7CUnknown%7CTWF > pbGZsb3d8 > > >> > eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > D% > > >> > 7C1000&sdata=owV810qvJWHnaoav%2BZDlpd%2FmjALiZkk0uWM44gqj > jQ8%3D > > >> &reserved=0 > > >> > > >> I based both off Shawn's for-next branch. > > > > > > I tried to enable USB with the GPCv2 stuff pulled into Shawn's > > > for-next branch, and my board hangs when USB is loaded, but USB > > > doesn't use blk-ctl, it just uses GPCv2. > > > > > > I looked at some of the changes with GPCv2, and I noticed a comment > > > in the GPCv2 function called imx_pgc_power_up. The comment reads: > > > > > > /* > > > * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, > reg_val, > > > * (reg_val & domain->bits.hskack), 0, > > > * USEC_PER_MSEC); > > > * Technically we need the commented code to wait handshake. But that > > > needs > > > * the BLK-CTL module BUS clk-en bit being set. > > > * > > > * There is a separate BLK-CTL module and we will have such a driver > > > for it, > > > * that driver will set the BUS clk-en bit and handshake will be > > > triggered > > > * automatically there. Just add a delay and suppose the handshake > > > finish > > > * after that. > > > */ > > > > > > I didn't see a delay here despite the comment saying we should add one. > > > > > > With the blk-ctl enabled, I attempted to uncomment the above line of > > > code without much success in preventing the board from hanging. > > > > > > If BUS clk-en bit needs to be set in order for the handshake to > > > work, should all these power domains reference it to bring it up? > > > If we decide against using the BUS clk-en bit, what should this delay be? > > > > It is only for power domain has mix and need delay for the handshake. > > USB no need that handshake. > > Don't the OTG domains depend on hsiomix? Sorry, I mean hsiomix has no blkctl. It no need handshake and no pu for hsiomix. > > > > > Could you post a github branch, then I could give a look? > > No problem. I'll give a try. Per my try, I tested VPU/DISP which are complicated cases, for usb, actually it has nothing to do with blk-ctl, it should be gpcv2 handling has issue. Thanks, Peng. > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub. > com%2Faford173%2Flinux%2Ftree%2Ffor-next&data=04%7C01%7Cpen > g.fan%40nxp.com%7C29fe5fa2af704121c2d508d930b25126%7C686ea1d3bc > 2b4c6fa92cd99c5c301635%7C0%7C0%7C637594364693106714%7CUnknow > n%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1ha > WwiLCJXVCI6Mn0%3D%7C1000&sdata=6tiEiL7TMioVeb88WKHTYxVPxE > MT1pboN%2FSMxiKA1yM%3D&reserved=0 > > thanks > > adam > > > > > Thanks, > > Peng. > > > > > > > > adam > > >> > > >> adam > > >> > > >>> --- > > >>> drivers/soc/imx/Makefile | 2 +- > > >>> drivers/soc/imx/blk-ctl-imx8mm.c | 139 > +++++++++++++++++++++++++++++++ > > >>> 2 files changed, 140 insertions(+), 1 deletion(-) > > >>> create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c > > >>> > > >>> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile > > >>> index d3d2b49a386c..c260b962f495 100644 > > >>> --- a/drivers/soc/imx/Makefile > > >>> +++ b/drivers/soc/imx/Makefile > > >>> @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o > > >>> endif > > >>> obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o > > >>> obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o > > >>> -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > > >>> +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > blk-ctl-imx8mm.o > > >>> diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c > > >>> b/drivers/soc/imx/blk-ctl-imx8mm.c > > >>> new file mode 100644 > > >>> index 000000000000..59443588f892 > > >>> --- /dev/null > > >>> +++ b/drivers/soc/imx/blk-ctl-imx8mm.c > > >>> @@ -0,0 +1,139 @@ > > >>> +// SPDX-License-Identifier: GPL-2.0 > > >>> +/* > > >>> + * Copyright 2021 NXP > > >>> + */ > > >>> + > > >>> +#include <dt-bindings/clock/imx8mm-clock.h> > > >>> +#include <dt-bindings/power/imx8mm-power.h> > > >>> +#include <linux/clk.h> > > >>> +#include <linux/err.h> > > >>> +#include <linux/io.h> > > >>> +#include <linux/module.h> > > >>> +#include <linux/mutex.h> > > >>> +#include <linux/of_address.h> > > >>> +#include <linux/of_device.h> > > >>> +#include <linux/platform_device.h> #include <linux/slab.h> > > >>> +#include <linux/types.h> #include <linux/pm_domain.h> #include > > >>> +<linux/regmap.h> > > >>> + > > >>> +#include "blk-ctl.h" > > >>> + > > >>> +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN > BIT(6) > > >>> +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN > BIT(5) > > >>> +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN > BIT(4) > > >>> +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN > BIT(3) > > >>> +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN > GENMASK(2, 0) > > >>> + > > >>> +#define MEDIA_BLK_BUS_PD_MASK > BIT(12) > > >>> +#define MEDIA_BLK_MIPI_CSI_PD_MASK > GENMASK(11, 10) > > >>> +#define MEDIA_BLK_MIPI_DSI_PD_MASK > GENMASK(9, 8) > > >>> +#define MEDIA_BLK_LCDIF_PD_MASK > GENMASK(7, 6) > > >>> +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK > GENMASK(5, 0) > > >>> + > > >>> +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { > > >>> + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, > IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, > > >>> + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, > MEDIA_BLK_CSI_BRIDGE_SFT_EN, > > >>> + IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("LCDIF", NULL, > IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, > > >>> + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), > > >>> + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", > IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, > > >>> + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, > MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, > > >>> + IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", > IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, > > >>> + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, > > >>> + > MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | > MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, > > >>> + IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", > IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, > > >>> + MEDIA_BLK_BUS_PD_MASK, 0, > MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, > > >>> + IMX_BLK_CTL_PD_HANDSHAKE | > > >>> +IMX_BLK_CTL_PD_RESET) }; > > >>> + > > >>> +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", > IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, > > >>> + BIT(0), 0, BIT(0), > IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", > IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, > > >>> + BIT(1), 0, BIT(1), > IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", > IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, > > >>> + BIT(2), 0, BIT(2), > IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", > IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, > > >>> + BIT(2), 0, BIT(2), > IMX_BLK_CTL_PD_HANDSHAKE > > >>> +| IMX_BLK_CTL_PD_RESET) }; > > >>> + > > >>> +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { > > >>> + .reg_bits = 32, > > >>> + .reg_stride = 4, > > >>> + .val_bits = 32, > > >>> + .max_register = 0x30, > > >>> + .fast_io = true, > > >>> +}; > > >>> + > > >>> +static const struct imx_blk_ctl_dev_data > imx8mm_vpumix_blk_ctl_dev_data = { > > >>> + .pds = imx8mm_vpumix_blk_ctl_pds, > > >>> + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), > > >>> + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, > > >>> + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], > > >>> + .config = imx8mm_blk_ctl_regmap_config, > > >>> + .name = "imx-vpumix-blk-ctl", }; > > >>> + > > >>> +static const struct imx_blk_ctl_dev_data > imx8mm_dispmix_blk_ctl_dev_data = { > > >>> + .pds = imx8mm_dispmix_blk_ctl_pds, > > >>> + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), > > >>> + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, > > >>> + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], > > >>> + .config = imx8mm_blk_ctl_regmap_config, > > >>> + .name = "imx-dispmix-blk-ctl", }; > > >>> + > > >>> +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) { > > >>> + struct device *dev = &pdev->dev; > > >>> + const struct imx_blk_ctl_dev_data *dev_data = > of_device_get_match_data(dev); > > >>> + struct regmap *regmap; > > >>> + struct imx_blk_ctl *ctl; > > >>> + void __iomem *base; > > >>> + > > >>> + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); > > >>> + if (!ctl) > > >>> + return -ENOMEM; > > >>> + > > >>> + base = devm_platform_ioremap_resource(pdev, 0); > > >>> + if (IS_ERR(base)) > > >>> + return PTR_ERR(base); > > >>> + > > >>> + regmap = devm_regmap_init_mmio(dev, base, > &dev_data->config); > > >>> + if (IS_ERR(regmap)) > > >>> + return PTR_ERR(regmap); > > >>> + > > >>> + ctl->regmap = regmap; > > >>> + ctl->dev = dev; > > >>> + mutex_init(&ctl->lock); > > >>> + > > >>> + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); > > >>> + if (ctl->num_clks < 0) > > >>> + return ctl->num_clks; > > >>> + > > >>> + dev_set_drvdata(dev, ctl); > > >>> + ctl->dev_data = dev_data; > > >>> + > > >>> + return imx_blk_ctl_register(dev); } > > >>> + > > >>> +static const struct of_device_id imx_blk_ctl_of_match[] = { > > >>> + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = > &imx8mm_vpumix_blk_ctl_dev_data }, > > >>> + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = > &imx8mm_dispmix_blk_ctl_dev_data }, > > >>> + { /* Sentinel */ } > > >>> +}; > > >>> +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); > > >>> + > > >>> +static struct platform_driver imx_blk_ctl_driver = { > > >>> + .probe = imx8mm_blk_ctl_probe, > > >>> + .driver = { > > >>> + .name = "imx8mm-blk-ctl", > > >>> + .of_match_table = > of_match_ptr(imx_blk_ctl_of_match), > > >>> + .pm = &imx_blk_ctl_pm_ops, > > >>> + }, > > >>> +}; > > >>> +module_platform_driver(imx_blk_ctl_driver); > > >>> -- > > >>> 2.30.0 > > >>>
> Subject: Re: [PATCH V7 4/4] soc: imx: Add blk-ctl driver for i.MX8MM > > On Tue, Jun 15, 2021 at 6:05 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > wrote: > > > > > > On 2021/6/15 3:29, Adam Ford wrote: > > > On Mon, Jun 14, 2021 at 1:07 PM Adam Ford <aford173@gmail.com> > wrote: > > >> > > >> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > wrote: > > >>> > > >>> From: Peng Fan <peng.fan@nxp.com> > > >>> > > >>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we > add > > >>> that support in this driver. > > >>> > > >>> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > > >>> Signed-off-by: Peng Fan <peng.fan@nxp.com> > > >> > > >> Maybe my TF-A is too old, but I am not able to wake the device from > > >> suspend-to-ram with this series. I used the device tree from [1] > > >> to enable both the GPCv2 and the blk-ctl stuff. > > >> > > >> [1] - > > >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fp > > >> > atchwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Fpatch%2F20210604 > > >> > 111005.6804-1-peng.fan%40oss.nxp.com%2F&data=04%7C01%7Cpeng. > fan > > >> %40nxp.com%7C29fe5fa2af704121c2d508d930b25126%7C686ea1d3bc > 2b4c6fa92 > > >> > cd99c5c301635%7C0%7C0%7C637594364693096718%7CUnknown%7CTWF > pbGZsb3d8 > > >> > eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > D% > > >> > 7C1000&sdata=owV810qvJWHnaoav%2BZDlpd%2FmjALiZkk0uWM44gqj > jQ8%3D > > >> &reserved=0 > > >> > > >> I based both off Shawn's for-next branch. > > > > > > I tried to enable USB with the GPCv2 stuff pulled into Shawn's > > > for-next branch, and my board hangs when USB is loaded, but USB > > > doesn't use blk-ctl, it just uses GPCv2. > > > > > > I looked at some of the changes with GPCv2, and I noticed a comment > > > in the GPCv2 function called imx_pgc_power_up. The comment reads: > > > > > > /* > > > * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, > reg_val, > > > * (reg_val & domain->bits.hskack), 0, > > > * USEC_PER_MSEC); > > > * Technically we need the commented code to wait handshake. But that > > > needs > > > * the BLK-CTL module BUS clk-en bit being set. > > > * > > > * There is a separate BLK-CTL module and we will have such a driver > > > for it, > > > * that driver will set the BUS clk-en bit and handshake will be > > > triggered > > > * automatically there. Just add a delay and suppose the handshake > > > finish > > > * after that. > > > */ > > > > > > I didn't see a delay here despite the comment saying we should add one. > > > > > > With the blk-ctl enabled, I attempted to uncomment the above line of > > > code without much success in preventing the board from hanging. > > > > > > If BUS clk-en bit needs to be set in order for the handshake to > > > work, should all these power domains reference it to bring it up? > > > If we decide against using the BUS clk-en bit, what should this delay be? > > > > It is only for power domain has mix and need delay for the handshake. > > USB no need that handshake. > > Don't the OTG domains depend on hsiomix? It works well with this change in dtsi. diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 0e01ff649956..e930ae3122ec 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -1087,6 +1087,7 @@ usbotg1: usb@32e40000 { assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_500M>; fsl,usbphy = <&usbphynop1>; fsl,usbmisc = <&usbmisc1 0>; + power-domains = <&pgc_otg1>; status = "disabled"; }; @@ -1106,6 +1107,7 @@ usbotg2: usb@32e50000 { assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_500M>; fsl,usbphy = <&usbphynop2>; fsl,usbmisc = <&usbmisc2 0>; + power-domains = <&pgc_otg2>; status = "disabled"; }; Regards, Peng. > > > > > Could you post a github branch, then I could give a look? > > No problem. > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub. > com%2Faford173%2Flinux%2Ftree%2Ffor-next&data=04%7C01%7Cpen > g.fan%40nxp.com%7C29fe5fa2af704121c2d508d930b25126%7C686ea1d3bc > 2b4c6fa92cd99c5c301635%7C0%7C0%7C637594364693106714%7CUnknow > n%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1ha > WwiLCJXVCI6Mn0%3D%7C1000&sdata=6tiEiL7TMioVeb88WKHTYxVPxE > MT1pboN%2FSMxiKA1yM%3D&reserved=0 > > thanks > > adam > > > > > Thanks, > > Peng. > > > > > > > > adam > > >> > > >> adam > > >> > > >>> --- > > >>> drivers/soc/imx/Makefile | 2 +- > > >>> drivers/soc/imx/blk-ctl-imx8mm.c | 139 > +++++++++++++++++++++++++++++++ > > >>> 2 files changed, 140 insertions(+), 1 deletion(-) > > >>> create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c > > >>> > > >>> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile > > >>> index d3d2b49a386c..c260b962f495 100644 > > >>> --- a/drivers/soc/imx/Makefile > > >>> +++ b/drivers/soc/imx/Makefile > > >>> @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o > > >>> endif > > >>> obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o > > >>> obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o > > >>> -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > > >>> +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > blk-ctl-imx8mm.o > > >>> diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c > > >>> b/drivers/soc/imx/blk-ctl-imx8mm.c > > >>> new file mode 100644 > > >>> index 000000000000..59443588f892 > > >>> --- /dev/null > > >>> +++ b/drivers/soc/imx/blk-ctl-imx8mm.c > > >>> @@ -0,0 +1,139 @@ > > >>> +// SPDX-License-Identifier: GPL-2.0 > > >>> +/* > > >>> + * Copyright 2021 NXP > > >>> + */ > > >>> + > > >>> +#include <dt-bindings/clock/imx8mm-clock.h> > > >>> +#include <dt-bindings/power/imx8mm-power.h> > > >>> +#include <linux/clk.h> > > >>> +#include <linux/err.h> > > >>> +#include <linux/io.h> > > >>> +#include <linux/module.h> > > >>> +#include <linux/mutex.h> > > >>> +#include <linux/of_address.h> > > >>> +#include <linux/of_device.h> > > >>> +#include <linux/platform_device.h> #include <linux/slab.h> > > >>> +#include <linux/types.h> #include <linux/pm_domain.h> #include > > >>> +<linux/regmap.h> > > >>> + > > >>> +#include "blk-ctl.h" > > >>> + > > >>> +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN > BIT(6) > > >>> +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN > BIT(5) > > >>> +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN > BIT(4) > > >>> +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN > BIT(3) > > >>> +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN > GENMASK(2, 0) > > >>> + > > >>> +#define MEDIA_BLK_BUS_PD_MASK > BIT(12) > > >>> +#define MEDIA_BLK_MIPI_CSI_PD_MASK > GENMASK(11, 10) > > >>> +#define MEDIA_BLK_MIPI_DSI_PD_MASK > GENMASK(9, 8) > > >>> +#define MEDIA_BLK_LCDIF_PD_MASK > GENMASK(7, 6) > > >>> +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK > GENMASK(5, 0) > > >>> + > > >>> +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { > > >>> + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, > IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, > > >>> + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, > MEDIA_BLK_CSI_BRIDGE_SFT_EN, > > >>> + IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("LCDIF", NULL, > IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, > > >>> + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), > > >>> + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", > IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, > > >>> + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, > MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, > > >>> + IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", > IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, > > >>> + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, > > >>> + > MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | > MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, > > >>> + IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", > IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, > > >>> + MEDIA_BLK_BUS_PD_MASK, 0, > MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, > > >>> + IMX_BLK_CTL_PD_HANDSHAKE | > > >>> +IMX_BLK_CTL_PD_RESET) }; > > >>> + > > >>> +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", > IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, > > >>> + BIT(0), 0, BIT(0), > IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", > IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, > > >>> + BIT(1), 0, BIT(1), > IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", > IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, > > >>> + BIT(2), 0, BIT(2), > IMX_BLK_CTL_PD_RESET), > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", > IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, > > >>> + BIT(2), 0, BIT(2), > IMX_BLK_CTL_PD_HANDSHAKE > > >>> +| IMX_BLK_CTL_PD_RESET) }; > > >>> + > > >>> +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { > > >>> + .reg_bits = 32, > > >>> + .reg_stride = 4, > > >>> + .val_bits = 32, > > >>> + .max_register = 0x30, > > >>> + .fast_io = true, > > >>> +}; > > >>> + > > >>> +static const struct imx_blk_ctl_dev_data > imx8mm_vpumix_blk_ctl_dev_data = { > > >>> + .pds = imx8mm_vpumix_blk_ctl_pds, > > >>> + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), > > >>> + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, > > >>> + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], > > >>> + .config = imx8mm_blk_ctl_regmap_config, > > >>> + .name = "imx-vpumix-blk-ctl", }; > > >>> + > > >>> +static const struct imx_blk_ctl_dev_data > imx8mm_dispmix_blk_ctl_dev_data = { > > >>> + .pds = imx8mm_dispmix_blk_ctl_pds, > > >>> + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), > > >>> + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, > > >>> + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], > > >>> + .config = imx8mm_blk_ctl_regmap_config, > > >>> + .name = "imx-dispmix-blk-ctl", }; > > >>> + > > >>> +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) { > > >>> + struct device *dev = &pdev->dev; > > >>> + const struct imx_blk_ctl_dev_data *dev_data = > of_device_get_match_data(dev); > > >>> + struct regmap *regmap; > > >>> + struct imx_blk_ctl *ctl; > > >>> + void __iomem *base; > > >>> + > > >>> + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); > > >>> + if (!ctl) > > >>> + return -ENOMEM; > > >>> + > > >>> + base = devm_platform_ioremap_resource(pdev, 0); > > >>> + if (IS_ERR(base)) > > >>> + return PTR_ERR(base); > > >>> + > > >>> + regmap = devm_regmap_init_mmio(dev, base, > &dev_data->config); > > >>> + if (IS_ERR(regmap)) > > >>> + return PTR_ERR(regmap); > > >>> + > > >>> + ctl->regmap = regmap; > > >>> + ctl->dev = dev; > > >>> + mutex_init(&ctl->lock); > > >>> + > > >>> + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); > > >>> + if (ctl->num_clks < 0) > > >>> + return ctl->num_clks; > > >>> + > > >>> + dev_set_drvdata(dev, ctl); > > >>> + ctl->dev_data = dev_data; > > >>> + > > >>> + return imx_blk_ctl_register(dev); } > > >>> + > > >>> +static const struct of_device_id imx_blk_ctl_of_match[] = { > > >>> + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = > &imx8mm_vpumix_blk_ctl_dev_data }, > > >>> + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = > &imx8mm_dispmix_blk_ctl_dev_data }, > > >>> + { /* Sentinel */ } > > >>> +}; > > >>> +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); > > >>> + > > >>> +static struct platform_driver imx_blk_ctl_driver = { > > >>> + .probe = imx8mm_blk_ctl_probe, > > >>> + .driver = { > > >>> + .name = "imx8mm-blk-ctl", > > >>> + .of_match_table = > of_match_ptr(imx_blk_ctl_of_match), > > >>> + .pm = &imx_blk_ctl_pm_ops, > > >>> + }, > > >>> +}; > > >>> +module_platform_driver(imx_blk_ctl_driver); > > >>> -- > > >>> 2.30.0 > > >>>
On Wed, Jun 16, 2021 at 10:14 PM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: > > > Subject: Re: [PATCH V7 4/4] soc: imx: Add blk-ctl driver for i.MX8MM > > > > On Tue, Jun 15, 2021 at 6:05 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > > wrote: > > > > > > > > > On 2021/6/15 3:29, Adam Ford wrote: > > > > On Mon, Jun 14, 2021 at 1:07 PM Adam Ford <aford173@gmail.com> > > wrote: > > > >> > > > >> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > > wrote: > > > >>> > > > >>> From: Peng Fan <peng.fan@nxp.com> > > > >>> > > > >>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we > > add > > > >>> that support in this driver. > > > >>> > > > >>> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > > > >>> Signed-off-by: Peng Fan <peng.fan@nxp.com> > > > >> > > > >> Maybe my TF-A is too old, but I am not able to wake the device from > > > >> suspend-to-ram with this series. I used the device tree from [1] > > > >> to enable both the GPCv2 and the blk-ctl stuff. > > > >> > > > >> [1] - > > > >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fp > > > >> > > atchwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Fpatch%2F20210604 > > > >> > > 111005.6804-1-peng.fan%40oss.nxp.com%2F&data=04%7C01%7Cpeng. > > fan > > > >> %40nxp.com%7C29fe5fa2af704121c2d508d930b25126%7C686ea1d3bc > > 2b4c6fa92 > > > >> > > cd99c5c301635%7C0%7C0%7C637594364693096718%7CUnknown%7CTWF > > pbGZsb3d8 > > > >> > > eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > > D% > > > >> > > 7C1000&sdata=owV810qvJWHnaoav%2BZDlpd%2FmjALiZkk0uWM44gqj > > jQ8%3D > > > >> &reserved=0 > > > >> > > > >> I based both off Shawn's for-next branch. > > > > > > > > I tried to enable USB with the GPCv2 stuff pulled into Shawn's > > > > for-next branch, and my board hangs when USB is loaded, but USB > > > > doesn't use blk-ctl, it just uses GPCv2. > > > > > > > > I looked at some of the changes with GPCv2, and I noticed a comment > > > > in the GPCv2 function called imx_pgc_power_up. The comment reads: > > > > > > > > /* > > > > * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, > > reg_val, > > > > * (reg_val & domain->bits.hskack), 0, > > > > * USEC_PER_MSEC); > > > > * Technically we need the commented code to wait handshake. But that > > > > needs > > > > * the BLK-CTL module BUS clk-en bit being set. > > > > * > > > > * There is a separate BLK-CTL module and we will have such a driver > > > > for it, > > > > * that driver will set the BUS clk-en bit and handshake will be > > > > triggered > > > > * automatically there. Just add a delay and suppose the handshake > > > > finish > > > > * after that. > > > > */ > > > > > > > > I didn't see a delay here despite the comment saying we should add one. > > > > > > > > With the blk-ctl enabled, I attempted to uncomment the above line of > > > > code without much success in preventing the board from hanging. > > > > > > > > If BUS clk-en bit needs to be set in order for the handshake to > > > > work, should all these power domains reference it to bring it up? > > > > If we decide against using the BUS clk-en bit, what should this delay be? > > > > > > It is only for power domain has mix and need delay for the handshake. > > > USB no need that handshake. > > > > Don't the OTG domains depend on hsiomix? > > > It works well with this change in dtsi. > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > index 0e01ff649956..e930ae3122ec 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > @@ -1087,6 +1087,7 @@ usbotg1: usb@32e40000 { > assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_500M>; > fsl,usbphy = <&usbphynop1>; > fsl,usbmisc = <&usbmisc1 0>; > + power-domains = <&pgc_otg1>; > status = "disabled"; > }; > > @@ -1106,6 +1107,7 @@ usbotg2: usb@32e50000 { > assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_500M>; > fsl,usbphy = <&usbphynop2>; > fsl,usbmisc = <&usbmisc2 0>; > + power-domains = <&pgc_otg2>; > status = "disabled"; > }; > Even with USB disabled, I was still having issues resuming from suspend-to-ram. I'll enable these and try again. adam > > Regards, > Peng. > > > > > > > > > Could you post a github branch, then I could give a look? > > > > No problem. > > > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub. > > com%2Faford173%2Flinux%2Ftree%2Ffor-next&data=04%7C01%7Cpen > > g.fan%40nxp.com%7C29fe5fa2af704121c2d508d930b25126%7C686ea1d3bc > > 2b4c6fa92cd99c5c301635%7C0%7C0%7C637594364693106714%7CUnknow > > n%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1ha > > WwiLCJXVCI6Mn0%3D%7C1000&sdata=6tiEiL7TMioVeb88WKHTYxVPxE > > MT1pboN%2FSMxiKA1yM%3D&reserved=0 > > > > thanks > > > > adam > > > > > > > > Thanks, > > > Peng. > > > > > > > > > > > adam > > > >> > > > >> adam > > > >> > > > >>> --- > > > >>> drivers/soc/imx/Makefile | 2 +- > > > >>> drivers/soc/imx/blk-ctl-imx8mm.c | 139 > > +++++++++++++++++++++++++++++++ > > > >>> 2 files changed, 140 insertions(+), 1 deletion(-) > > > >>> create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c > > > >>> > > > >>> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile > > > >>> index d3d2b49a386c..c260b962f495 100644 > > > >>> --- a/drivers/soc/imx/Makefile > > > >>> +++ b/drivers/soc/imx/Makefile > > > >>> @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o > > > >>> endif > > > >>> obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o > > > >>> obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o > > > >>> -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > > > >>> +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o > > blk-ctl-imx8mm.o > > > >>> diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c > > > >>> b/drivers/soc/imx/blk-ctl-imx8mm.c > > > >>> new file mode 100644 > > > >>> index 000000000000..59443588f892 > > > >>> --- /dev/null > > > >>> +++ b/drivers/soc/imx/blk-ctl-imx8mm.c > > > >>> @@ -0,0 +1,139 @@ > > > >>> +// SPDX-License-Identifier: GPL-2.0 > > > >>> +/* > > > >>> + * Copyright 2021 NXP > > > >>> + */ > > > >>> + > > > >>> +#include <dt-bindings/clock/imx8mm-clock.h> > > > >>> +#include <dt-bindings/power/imx8mm-power.h> > > > >>> +#include <linux/clk.h> > > > >>> +#include <linux/err.h> > > > >>> +#include <linux/io.h> > > > >>> +#include <linux/module.h> > > > >>> +#include <linux/mutex.h> > > > >>> +#include <linux/of_address.h> > > > >>> +#include <linux/of_device.h> > > > >>> +#include <linux/platform_device.h> #include <linux/slab.h> > > > >>> +#include <linux/types.h> #include <linux/pm_domain.h> #include > > > >>> +<linux/regmap.h> > > > >>> + > > > >>> +#include "blk-ctl.h" > > > >>> + > > > >>> +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN > > BIT(6) > > > >>> +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN > > BIT(5) > > > >>> +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN > > BIT(4) > > > >>> +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN > > BIT(3) > > > >>> +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN > > GENMASK(2, 0) > > > >>> + > > > >>> +#define MEDIA_BLK_BUS_PD_MASK > > BIT(12) > > > >>> +#define MEDIA_BLK_MIPI_CSI_PD_MASK > > GENMASK(11, 10) > > > >>> +#define MEDIA_BLK_MIPI_DSI_PD_MASK > > GENMASK(9, 8) > > > >>> +#define MEDIA_BLK_LCDIF_PD_MASK > > GENMASK(7, 6) > > > >>> +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK > > GENMASK(5, 0) > > > >>> + > > > >>> +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { > > > >>> + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, > > IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, > > > >>> + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, > > MEDIA_BLK_CSI_BRIDGE_SFT_EN, > > > >>> + IMX_BLK_CTL_PD_RESET), > > > >>> + IMX_BLK_CTL_PD("LCDIF", NULL, > > IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, > > > >>> + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), > > > >>> + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", > > IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, > > > >>> + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, > > MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, > > > >>> + IMX_BLK_CTL_PD_RESET), > > > >>> + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", > > IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, > > > >>> + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, > > > >>> + > > MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | > > MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, > > > >>> + IMX_BLK_CTL_PD_RESET), > > > >>> + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", > > IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, > > > >>> + MEDIA_BLK_BUS_PD_MASK, 0, > > MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, > > > >>> + IMX_BLK_CTL_PD_HANDSHAKE | > > > >>> +IMX_BLK_CTL_PD_RESET) }; > > > >>> + > > > >>> +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { > > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", > > IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, > > > >>> + BIT(0), 0, BIT(0), > > IMX_BLK_CTL_PD_RESET), > > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", > > IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, > > > >>> + BIT(1), 0, BIT(1), > > IMX_BLK_CTL_PD_RESET), > > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", > > IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, > > > >>> + BIT(2), 0, BIT(2), > > IMX_BLK_CTL_PD_RESET), > > > >>> + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", > > IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, > > > >>> + BIT(2), 0, BIT(2), > > IMX_BLK_CTL_PD_HANDSHAKE > > > >>> +| IMX_BLK_CTL_PD_RESET) }; > > > >>> + > > > >>> +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { > > > >>> + .reg_bits = 32, > > > >>> + .reg_stride = 4, > > > >>> + .val_bits = 32, > > > >>> + .max_register = 0x30, > > > >>> + .fast_io = true, > > > >>> +}; > > > >>> + > > > >>> +static const struct imx_blk_ctl_dev_data > > imx8mm_vpumix_blk_ctl_dev_data = { > > > >>> + .pds = imx8mm_vpumix_blk_ctl_pds, > > > >>> + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), > > > >>> + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, > > > >>> + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], > > > >>> + .config = imx8mm_blk_ctl_regmap_config, > > > >>> + .name = "imx-vpumix-blk-ctl", }; > > > >>> + > > > >>> +static const struct imx_blk_ctl_dev_data > > imx8mm_dispmix_blk_ctl_dev_data = { > > > >>> + .pds = imx8mm_dispmix_blk_ctl_pds, > > > >>> + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), > > > >>> + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, > > > >>> + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], > > > >>> + .config = imx8mm_blk_ctl_regmap_config, > > > >>> + .name = "imx-dispmix-blk-ctl", }; > > > >>> + > > > >>> +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) { > > > >>> + struct device *dev = &pdev->dev; > > > >>> + const struct imx_blk_ctl_dev_data *dev_data = > > of_device_get_match_data(dev); > > > >>> + struct regmap *regmap; > > > >>> + struct imx_blk_ctl *ctl; > > > >>> + void __iomem *base; > > > >>> + > > > >>> + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); > > > >>> + if (!ctl) > > > >>> + return -ENOMEM; > > > >>> + > > > >>> + base = devm_platform_ioremap_resource(pdev, 0); > > > >>> + if (IS_ERR(base)) > > > >>> + return PTR_ERR(base); > > > >>> + > > > >>> + regmap = devm_regmap_init_mmio(dev, base, > > &dev_data->config); > > > >>> + if (IS_ERR(regmap)) > > > >>> + return PTR_ERR(regmap); > > > >>> + > > > >>> + ctl->regmap = regmap; > > > >>> + ctl->dev = dev; > > > >>> + mutex_init(&ctl->lock); > > > >>> + > > > >>> + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); > > > >>> + if (ctl->num_clks < 0) > > > >>> + return ctl->num_clks; > > > >>> + > > > >>> + dev_set_drvdata(dev, ctl); > > > >>> + ctl->dev_data = dev_data; > > > >>> + > > > >>> + return imx_blk_ctl_register(dev); } > > > >>> + > > > >>> +static const struct of_device_id imx_blk_ctl_of_match[] = { > > > >>> + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = > > &imx8mm_vpumix_blk_ctl_dev_data }, > > > >>> + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = > > &imx8mm_dispmix_blk_ctl_dev_data }, > > > >>> + { /* Sentinel */ } > > > >>> +}; > > > >>> +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); > > > >>> + > > > >>> +static struct platform_driver imx_blk_ctl_driver = { > > > >>> + .probe = imx8mm_blk_ctl_probe, > > > >>> + .driver = { > > > >>> + .name = "imx8mm-blk-ctl", > > > >>> + .of_match_table = > > of_match_ptr(imx_blk_ctl_of_match), > > > >>> + .pm = &imx_blk_ctl_pm_ops, > > > >>> + }, > > > >>> +}; > > > >>> +module_platform_driver(imx_blk_ctl_driver); > > > >>> -- > > > >>> 2.30.0 > > > >>>
Hi Adam, On Thu, Jun 17, 2021 at 9:25 AM Adam Ford <aford173@gmail.com> wrote: > Even with USB disabled, I was still having issues resuming from > suspend-to-ram. I'll enable these and try again. Could this be ATF version-related? Peng, could you please share the ATF version you used in your tests? Cheers
On 6/14/21 8:07 PM, Adam Ford wrote: > On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote: >> >> From: Peng Fan <peng.fan@nxp.com> >> >> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add >> that support in this driver. >> >> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> >> Signed-off-by: Peng Fan <peng.fan@nxp.com> > > Maybe my TF-A is too old, but I am not able to wake the device from > suspend-to-ram with this series. I used the device tree from [1] to > enable both the GPCv2 and the blk-ctl stuff. > > [1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210604111005.6804-1-peng.fan@oss.nxp.com/ > > I based both off Shawn's for-next branch. I also ran into issues with this, although it could also be related to GPCv2. On MX8MM , the system sometimes hangs when bringing up the GPCv2 power domain 6 (VPUMIX). It seems that the GPCv2 driver sets GPC_PU_PGC_SW_PUP_REQ register to 0x100 to bring up the VPUMIX and the bit never self-clears. After that, it seems the entire GPC locks up. Have you ever seen that kind of behavior ?
> Subject: Re: [PATCH V7 4/4] soc: imx: Add blk-ctl driver for i.MX8MM > > On 6/14/21 8:07 PM, Adam Ford wrote: > > On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> > wrote: > >> > >> From: Peng Fan <peng.fan@nxp.com> > >> > >> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add > >> that support in this driver. > >> > >> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > >> Signed-off-by: Peng Fan <peng.fan@nxp.com> > > > > Maybe my TF-A is too old, but I am not able to wake the device from > > suspend-to-ram with this series. I used the device tree from [1] to > > enable both the GPCv2 and the blk-ctl stuff. > > > > [1] - > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc > > > hwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Fpatch%2F20210604111 > 005 > > .6804-1-peng.fan%40oss.nxp.com%2F&data=04%7C01%7Cpeng.fan%4 > 0nxp.co > > > m%7Ca4c06cfdf6314633c7c708d93a23cff0%7C686ea1d3bc2b4c6fa92cd99c > 5c30163 > > > 5%7C0%7C0%7C637604747755701757%7CUnknown%7CTWFpbGZsb3d8eyJ > WIjoiMC4wLjA > > > wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&s > data=0 > > pDwVtfizZ7mZh9pSfy0bSbffOxP90AnaQrZ8i8cNv0%3D&reserved=0 > > > > I based both off Shawn's for-next branch. > > I also ran into issues with this, although it could also be related to GPCv2. On > MX8MM , the system sometimes hangs when bringing up the GPCv2 power > domain 6 (VPUMIX). It seems that the GPCv2 driver sets > GPC_PU_PGC_SW_PUP_REQ register to 0x100 to bring up the VPUMIX and > the bit never self-clears. After that, it seems the entire GPC locks up. > Have you ever seen that kind of behavior ? Do you have clk enabled for vpumix? Is this issue happends every time? Or hard to reproduce? Thanks, Peng.
On 6/28/21 1:14 PM, Peng Fan wrote: >> Subject: Re: [PATCH V7 4/4] soc: imx: Add blk-ctl driver for i.MX8MM >> >> On 6/14/21 8:07 PM, Adam Ford wrote: >>> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> >> wrote: >>>> >>>> From: Peng Fan <peng.fan@nxp.com> >>>> >>>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add >>>> that support in this driver. >>>> >>>> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> >>>> Signed-off-by: Peng Fan <peng.fan@nxp.com> >>> >>> Maybe my TF-A is too old, but I am not able to wake the device from >>> suspend-to-ram with this series. I used the device tree from [1] to >>> enable both the GPCv2 and the blk-ctl stuff. >>> >>> [1] - >>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc >>> >> hwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Fpatch%2F20210604111 >> 005 >>> .6804-1-peng.fan%40oss.nxp.com%2F&data=04%7C01%7Cpeng.fan%4 >> 0nxp.co >>> >> m%7Ca4c06cfdf6314633c7c708d93a23cff0%7C686ea1d3bc2b4c6fa92cd99c >> 5c30163 >>> >> 5%7C0%7C0%7C637604747755701757%7CUnknown%7CTWFpbGZsb3d8eyJ >> WIjoiMC4wLjA >>> >> wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&s >> data=0 >>> pDwVtfizZ7mZh9pSfy0bSbffOxP90AnaQrZ8i8cNv0%3D&reserved=0 >>> >>> I based both off Shawn's for-next branch. >> >> I also ran into issues with this, although it could also be related to GPCv2. On >> MX8MM , the system sometimes hangs when bringing up the GPCv2 power >> domain 6 (VPUMIX). It seems that the GPCv2 driver sets >> GPC_PU_PGC_SW_PUP_REQ register to 0x100 to bring up the VPUMIX and >> the bit never self-clears. After that, it seems the entire GPC locks up. >> Have you ever seen that kind of behavior ? > > Do you have clk enabled for vpumix? Is this issue happends every time? Or hard > to reproduce? Yes, DEC_ROOT is active, I also activated BUS. It happens sporadically (every 5 or so reboots), I have to reboot the machine a few times to trigger it. It happens during the kernel boot process in every few boots.
diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile index d3d2b49a386c..c260b962f495 100644 --- a/drivers/soc/imx/Makefile +++ b/drivers/soc/imx/Makefile @@ -4,4 +4,4 @@ obj-$(CONFIG_ARCH_MXC) += soc-imx.o endif obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o -obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o +obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o blk-ctl.o blk-ctl-imx8mm.o diff --git a/drivers/soc/imx/blk-ctl-imx8mm.c b/drivers/soc/imx/blk-ctl-imx8mm.c new file mode 100644 index 000000000000..59443588f892 --- /dev/null +++ b/drivers/soc/imx/blk-ctl-imx8mm.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2021 NXP + */ + +#include <dt-bindings/clock/imx8mm-clock.h> +#include <dt-bindings/power/imx8mm-power.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/pm_domain.h> +#include <linux/regmap.h> + +#include "blk-ctl.h" + +#define MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN BIT(6) +#define MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN BIT(5) +#define MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN BIT(4) +#define MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN BIT(3) +#define MEDIA_BLK_CSI_BRIDGE_SFT_EN GENMASK(2, 0) + +#define MEDIA_BLK_BUS_PD_MASK BIT(12) +#define MEDIA_BLK_MIPI_CSI_PD_MASK GENMASK(11, 10) +#define MEDIA_BLK_MIPI_DSI_PD_MASK GENMASK(9, 8) +#define MEDIA_BLK_LCDIF_PD_MASK GENMASK(7, 6) +#define MEDIA_BLK_CSI_BRIDGE_PD_MASK GENMASK(5, 0) + +static struct imx_blk_ctl_hw imx8mm_dispmix_blk_ctl_pds[] = { + IMX_BLK_CTL_PD("CSI_BRIDGE", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_CSI_BRIDGE, 0x4, + MEDIA_BLK_CSI_BRIDGE_PD_MASK, 0, MEDIA_BLK_CSI_BRIDGE_SFT_EN, + IMX_BLK_CTL_PD_RESET), + IMX_BLK_CTL_PD("LCDIF", NULL, IMX8MM_BLK_CTL_PD_DISPMIX_LCDIF, 0x4, + MEDIA_BLK_LCDIF_PD_MASK, -1, -1, 0), + IMX_BLK_CTL_PD("MIPI_DSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_DSI, 0x4, + MEDIA_BLK_MIPI_DSI_PD_MASK, 0, MEDIA_BLK_MIPI_DSI_I_PRESETN_SFT_EN, + IMX_BLK_CTL_PD_RESET), + IMX_BLK_CTL_PD("MIPI_CSI", "mipi", IMX8MM_BLK_CTL_PD_DISPMIX_MIPI_CSI, 0x4, + MEDIA_BLK_MIPI_CSI_PD_MASK, 0, + MEDIA_BLK_MIPI_CSI_I_PRESETN_SFT_EN | MEDIA_BLK_CAMERA_PIXEL_RESET_N_SFT_EN, + IMX_BLK_CTL_PD_RESET), + IMX_BLK_CTL_PD("DISPMIX_BUS", "dispmix", IMX8MM_BLK_CTL_PD_DISPMIX_BUS, 0x4, + MEDIA_BLK_BUS_PD_MASK, 0, MEDIA_BLK_BUS_RSTN_BLK_SYNC_SFT_EN, + IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) +}; + +static struct imx_blk_ctl_hw imx8mm_vpumix_blk_ctl_pds[] = { + IMX_BLK_CTL_PD("VPU_BLK_CTL_G2", "vpu-g2", IMX8MM_BLK_CTL_PD_VPU_G2, 0x4, + BIT(0), 0, BIT(0), IMX_BLK_CTL_PD_RESET), + IMX_BLK_CTL_PD("VPU_BLK_CTL_G1", "vpu-g1", IMX8MM_BLK_CTL_PD_VPU_G1, 0x4, + BIT(1), 0, BIT(1), IMX_BLK_CTL_PD_RESET), + IMX_BLK_CTL_PD("VPU_BLK_CTL_H1", "vpu-h1", IMX8MM_BLK_CTL_PD_VPU_H1, 0x4, + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_RESET), + IMX_BLK_CTL_PD("VPU_BLK_CTL_BUS", "vpumix", IMX8MM_BLK_CTL_PD_VPU_BUS, 0x4, + BIT(2), 0, BIT(2), IMX_BLK_CTL_PD_HANDSHAKE | IMX_BLK_CTL_PD_RESET) +}; + +static const struct regmap_config imx8mm_blk_ctl_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x30, + .fast_io = true, +}; + +static const struct imx_blk_ctl_dev_data imx8mm_vpumix_blk_ctl_dev_data = { + .pds = imx8mm_vpumix_blk_ctl_pds, + .pds_num = ARRAY_SIZE(imx8mm_vpumix_blk_ctl_pds), + .max_num = IMX8MM_BLK_CTL_PD_VPU_MAX, + .hw_hsk = &imx8mm_vpumix_blk_ctl_pds[3], + .config = imx8mm_blk_ctl_regmap_config, + .name = "imx-vpumix-blk-ctl", +}; + +static const struct imx_blk_ctl_dev_data imx8mm_dispmix_blk_ctl_dev_data = { + .pds = imx8mm_dispmix_blk_ctl_pds, + .pds_num = ARRAY_SIZE(imx8mm_dispmix_blk_ctl_pds), + .max_num = IMX8MM_BLK_CTL_PD_DISPMIX_MAX, + .hw_hsk = &imx8mm_dispmix_blk_ctl_pds[4], + .config = imx8mm_blk_ctl_regmap_config, + .name = "imx-dispmix-blk-ctl", +}; + +static int imx8mm_blk_ctl_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + const struct imx_blk_ctl_dev_data *dev_data = of_device_get_match_data(dev); + struct regmap *regmap; + struct imx_blk_ctl *ctl; + void __iomem *base; + + ctl = devm_kzalloc(dev, sizeof(*ctl), GFP_KERNEL); + if (!ctl) + return -ENOMEM; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + regmap = devm_regmap_init_mmio(dev, base, &dev_data->config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + ctl->regmap = regmap; + ctl->dev = dev; + mutex_init(&ctl->lock); + + ctl->num_clks = devm_clk_bulk_get_all(dev, &ctl->clks); + if (ctl->num_clks < 0) + return ctl->num_clks; + + dev_set_drvdata(dev, ctl); + ctl->dev_data = dev_data; + + return imx_blk_ctl_register(dev); +} + +static const struct of_device_id imx_blk_ctl_of_match[] = { + { .compatible = "fsl,imx8mm-vpumix-blk-ctl", .data = &imx8mm_vpumix_blk_ctl_dev_data }, + { .compatible = "fsl,imx8mm-dispmix-blk-ctl", .data = &imx8mm_dispmix_blk_ctl_dev_data }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_blk_ctl_of_match); + +static struct platform_driver imx_blk_ctl_driver = { + .probe = imx8mm_blk_ctl_probe, + .driver = { + .name = "imx8mm-blk-ctl", + .of_match_table = of_match_ptr(imx_blk_ctl_of_match), + .pm = &imx_blk_ctl_pm_ops, + }, +}; +module_platform_driver(imx_blk_ctl_driver);