[v6,12/16] usb: dwc3: add make compatible for rockchip platform
diff mbox series

Message ID 20200526033435.20235-3-frank.wang@rock-chips.com
State New
Headers show
Series
  • Add Rockchip RK3399 USB3.0 Host support
Related show

Commit Message

Frank Wang May 26, 2020, 3:34 a.m. UTC
RK3399 Type-C PHY is required that must hold whole USB3.0 OTG controller
in resetting to hold pipe power state in P2 before initializing the PHY.
This commit fixed it and added device compatible for rockchip platform.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
---
 drivers/usb/dwc3/dwc3-generic.c | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

Comments

Jagan Teki May 26, 2020, 4:11 a.m. UTC | #1
On Tue, May 26, 2020 at 9:04 AM Frank Wang <frank.wang@rock-chips.com> wrote:
>
> RK3399 Type-C PHY is required that must hold whole USB3.0 OTG controller
> in resetting to hold pipe power state in P2 before initializing the PHY.
> This commit fixed it and added device compatible for rockchip platform.
>
> Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
> ---
>  drivers/usb/dwc3/dwc3-generic.c | 33 +++++++++++++++++++++++++++------
>  1 file changed, 27 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
> index eabd53a36d..421e0be135 100644
> --- a/drivers/usb/dwc3/dwc3-generic.c
> +++ b/drivers/usb/dwc3/dwc3-generic.c
> @@ -24,6 +24,12 @@
>  #include <clk.h>
>  #include <usb/xhci.h>
>
> +struct dwc3_glue_data {
> +       struct clk_bulk         clks;
> +       struct reset_ctl_bulk   resets;
> +       fdt_addr_t regs;
> +};
> +
>  struct dwc3_generic_plat {
>         fdt_addr_t base;
>         u32 maximum_speed;
> @@ -47,6 +53,7 @@ static int dwc3_generic_probe(struct udevice *dev,
>         int rc;
>         struct dwc3_generic_plat *plat = dev_get_platdata(dev);
>         struct dwc3 *dwc3 = &priv->dwc3;
> +       struct dwc3_glue_data *glue = dev_get_platdata(dev->parent);
>
>         dwc3->dev = dev;
>         dwc3->maximum_speed = plat->maximum_speed;
> @@ -55,10 +62,22 @@ static int dwc3_generic_probe(struct udevice *dev,
>         dwc3_of_parse(dwc3);
>  #endif
>
> +       /*
> +        * It must hold whole USB3.0 OTG controller in resetting to hold pipe
> +        * power state in P2 before initializing TypeC PHY on RK3399 platform.
> +        */
> +       if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3")) {
> +               reset_assert_bulk(&glue->resets);
> +               udelay(1);

Need to include <linux/delay.h> to fix build warnings, maybe Kever
will do while applying?

Jagan.

Patch
diff mbox series

diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index eabd53a36d..421e0be135 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -24,6 +24,12 @@ 
 #include <clk.h>
 #include <usb/xhci.h>
 
+struct dwc3_glue_data {
+	struct clk_bulk		clks;
+	struct reset_ctl_bulk	resets;
+	fdt_addr_t regs;
+};
+
 struct dwc3_generic_plat {
 	fdt_addr_t base;
 	u32 maximum_speed;
@@ -47,6 +53,7 @@  static int dwc3_generic_probe(struct udevice *dev,
 	int rc;
 	struct dwc3_generic_plat *plat = dev_get_platdata(dev);
 	struct dwc3 *dwc3 = &priv->dwc3;
+	struct dwc3_glue_data *glue = dev_get_platdata(dev->parent);
 
 	dwc3->dev = dev;
 	dwc3->maximum_speed = plat->maximum_speed;
@@ -55,10 +62,22 @@  static int dwc3_generic_probe(struct udevice *dev,
 	dwc3_of_parse(dwc3);
 #endif
 
+	/*
+	 * It must hold whole USB3.0 OTG controller in resetting to hold pipe
+	 * power state in P2 before initializing TypeC PHY on RK3399 platform.
+	 */
+	if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3")) {
+		reset_assert_bulk(&glue->resets);
+		udelay(1);
+	}
+
 	rc = dwc3_setup_phy(dev, &priv->phys);
 	if (rc)
 		return rc;
 
+	if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3"))
+		reset_deassert_bulk(&glue->resets);
+
 	priv->base = map_physmem(plat->base, DWC3_OTG_REGS_END, MAP_NOCACHE);
 	dwc3->regs = priv->base + DWC3_GLOBALS_REGS_START;
 
@@ -186,12 +205,6 @@  U_BOOT_DRIVER(dwc3_generic_host) = {
 };
 #endif
 
-struct dwc3_glue_data {
-	struct clk_bulk		clks;
-	struct reset_ctl_bulk	resets;
-	fdt_addr_t regs;
-};
-
 struct dwc3_glue_ops {
 	void (*select_dr_mode)(struct udevice *dev, int index,
 			       enum usb_dr_mode mode);
@@ -394,6 +407,12 @@  static int dwc3_glue_probe(struct udevice *dev)
 	if (ret)
 		return ret;
 
+	if (glue->resets.count == 0) {
+		ret = dwc3_glue_reset_init(child, glue);
+		if (ret)
+			return ret;
+	}
+
 	while (child) {
 		enum usb_dr_mode dr_mode;
 
@@ -424,6 +443,8 @@  static const struct udevice_id dwc3_glue_ids[] = {
 	{ .compatible = "ti,dwc3", .data = (ulong)&ti_ops },
 	{ .compatible = "ti,am437x-dwc3", .data = (ulong)&ti_ops },
 	{ .compatible = "ti,am654-dwc3" },
+	{ .compatible = "rockchip,rk3328-dwc3" },
+	{ .compatible = "rockchip,rk3399-dwc3" },
 	{ }
 };