| Message ID | 20230124054427.28808-3-rashmi.a@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v1,1/4] Revert "mmc: sdhci-of-arasan: Add intel Thunder Bay SOC support to the arasan eMMC driver" | expand |
On 24-01-23, 11:14, rashmi.a@intel.com wrote: > From: "A, Rashmi" <rashmi.a@intel.com> > > This reverts commit 97004c1a4c52b4357169290158a130ca0b7caae1. Please send a patch to drop the driver etc.. this revert makes no sense to me > > Revert Thunder Bay specific code as the product got cancelled > and there are no end customers. > > Signed-off-by: A, Rashmi <rashmi.a@intel.com> > Reviewed-by: Hunter, Adrian <adrian.hunter@intel.com> > --- > drivers/phy/intel/Kconfig | 10 - > drivers/phy/intel/Makefile | 1 - > drivers/phy/intel/phy-intel-thunderbay-emmc.c | 509 ------------------ > 3 files changed, 520 deletions(-) > delete mode 100644 drivers/phy/intel/phy-intel-thunderbay-emmc.c > > diff --git a/drivers/phy/intel/Kconfig b/drivers/phy/intel/Kconfig > index 18a3cc5b98c0..ac42bb2fb394 100644 > --- a/drivers/phy/intel/Kconfig > +++ b/drivers/phy/intel/Kconfig > @@ -46,13 +46,3 @@ config PHY_INTEL_LGM_EMMC > select GENERIC_PHY > help > Enable this to support the Intel EMMC PHY > - > -config PHY_INTEL_THUNDERBAY_EMMC > - tristate "Intel Thunder Bay eMMC PHY driver" > - depends on OF && (ARCH_THUNDERBAY || COMPILE_TEST) > - select GENERIC_PHY > - help > - This option enables support for Intel Thunder Bay SoC eMMC PHY. > - > - To compile this driver as a module, choose M here: the module > - will be called phy-intel-thunderbay-emmc.ko. > diff --git a/drivers/phy/intel/Makefile b/drivers/phy/intel/Makefile > index b7321d56b0bb..14550981a707 100644 > --- a/drivers/phy/intel/Makefile > +++ b/drivers/phy/intel/Makefile > @@ -3,4 +3,3 @@ obj-$(CONFIG_PHY_INTEL_KEEMBAY_EMMC) += phy-intel-keembay-emmc.o > obj-$(CONFIG_PHY_INTEL_KEEMBAY_USB) += phy-intel-keembay-usb.o > obj-$(CONFIG_PHY_INTEL_LGM_COMBO) += phy-intel-lgm-combo.o > obj-$(CONFIG_PHY_INTEL_LGM_EMMC) += phy-intel-lgm-emmc.o > -obj-$(CONFIG_PHY_INTEL_THUNDERBAY_EMMC) += phy-intel-thunderbay-emmc.o > diff --git a/drivers/phy/intel/phy-intel-thunderbay-emmc.c b/drivers/phy/intel/phy-intel-thunderbay-emmc.c > deleted file mode 100644 > index 593f6970b81e..000000000000 > --- a/drivers/phy/intel/phy-intel-thunderbay-emmc.c > +++ /dev/null > @@ -1,509 +0,0 @@ > -// SPDX-License-Identifier: GPL-2.0-only > -/* > - * Intel ThunderBay eMMC PHY driver > - * > - * Copyright (C) 2021 Intel Corporation > - * > - */ > - > -#include <linux/clk.h> > -#include <linux/delay.h> > -#include <linux/io.h> > -#include <linux/iopoll.h> > -#include <linux/module.h> > -#include <linux/of.h> > -#include <linux/phy/phy.h> > -#include <linux/platform_device.h> > - > -/* eMMC/SD/SDIO core/phy configuration registers */ > -#define CTRL_CFG_0 0x00 > -#define CTRL_CFG_1 0x04 > -#define CTRL_PRESET_0 0x08 > -#define CTRL_PRESET_1 0x0c > -#define CTRL_PRESET_2 0x10 > -#define CTRL_PRESET_3 0x14 > -#define CTRL_PRESET_4 0x18 > -#define CTRL_CFG_2 0x1c > -#define CTRL_CFG_3 0x20 > -#define PHY_CFG_0 0x24 > -#define PHY_CFG_1 0x28 > -#define PHY_CFG_2 0x2c > -#define PHYBIST_CTRL 0x30 > -#define SDHC_STAT3 0x34 > -#define PHY_STAT 0x38 > -#define PHYBIST_STAT_0 0x3c > -#define PHYBIST_STAT_1 0x40 > -#define EMMC_AXI 0x44 > - > -/* CTRL_PRESET_3 */ > -#define CTRL_PRESET3_MASK GENMASK(31, 0) > -#define CTRL_PRESET3_SHIFT 0 > - > -/* CTRL_CFG_0 bit fields */ > -#define SUPPORT_HS_MASK BIT(26) > -#define SUPPORT_HS_SHIFT 26 > - > -#define SUPPORT_8B_MASK BIT(24) > -#define SUPPORT_8B_SHIFT 24 > - > -/* CTRL_CFG_1 bit fields */ > -#define SUPPORT_SDR50_MASK BIT(28) > -#define SUPPORT_SDR50_SHIFT 28 > -#define SLOT_TYPE_MASK GENMASK(27, 26) > -#define SLOT_TYPE_OFFSET 26 > -#define SUPPORT_64B_MASK BIT(24) > -#define SUPPORT_64B_SHIFT 24 > -#define SUPPORT_HS400_MASK BIT(2) > -#define SUPPORT_HS400_SHIFT 2 > -#define SUPPORT_DDR50_MASK BIT(1) > -#define SUPPORT_DDR50_SHIFT 1 > -#define SUPPORT_SDR104_MASK BIT(0) > -#define SUPPORT_SDR104_SHIFT 0 > - > -/* PHY_CFG_0 bit fields */ > -#define SEL_DLY_TXCLK_MASK BIT(29) > -#define SEL_DLY_TXCLK_SHIFT 29 > -#define SEL_DLY_RXCLK_MASK BIT(28) > -#define SEL_DLY_RXCLK_SHIFT 28 > - > -#define OTAP_DLY_ENA_MASK BIT(27) > -#define OTAP_DLY_ENA_SHIFT 27 > -#define OTAP_DLY_SEL_MASK GENMASK(26, 23) > -#define OTAP_DLY_SEL_SHIFT 23 > -#define ITAP_CHG_WIN_MASK BIT(22) > -#define ITAP_CHG_WIN_SHIFT 22 > -#define ITAP_DLY_ENA_MASK BIT(21) > -#define ITAP_DLY_ENA_SHIFT 21 > -#define ITAP_DLY_SEL_MASK GENMASK(20, 16) > -#define ITAP_DLY_SEL_SHIFT 16 > -#define RET_ENB_MASK BIT(15) > -#define RET_ENB_SHIFT 15 > -#define RET_EN_MASK BIT(14) > -#define RET_EN_SHIFT 14 > -#define DLL_IFF_MASK GENMASK(13, 11) > -#define DLL_IFF_SHIFT 11 > -#define DLL_EN_MASK BIT(10) > -#define DLL_EN_SHIFT 10 > -#define DLL_TRIM_ICP_MASK GENMASK(9, 6) > -#define DLL_TRIM_ICP_SHIFT 6 > -#define RETRIM_EN_MASK BIT(5) > -#define RETRIM_EN_SHIFT 5 > -#define RETRIM_MASK BIT(4) > -#define RETRIM_SHIFT 4 > -#define DR_TY_MASK GENMASK(3, 1) > -#define DR_TY_SHIFT 1 > -#define PWR_DOWN_MASK BIT(0) > -#define PWR_DOWN_SHIFT 0 > - > -/* PHY_CFG_1 bit fields */ > -#define REN_DAT_MASK GENMASK(19, 12) > -#define REN_DAT_SHIFT 12 > -#define REN_CMD_MASK BIT(11) > -#define REN_CMD_SHIFT 11 > -#define REN_STRB_MASK BIT(10) > -#define REN_STRB_SHIFT 10 > -#define PU_STRB_MASK BIT(20) > -#define PU_STRB_SHIFT 20 > - > -/* PHY_CFG_2 bit fields */ > -#define CLKBUF_MASK GENMASK(24, 21) > -#define CLKBUF_SHIFT 21 > -#define SEL_STRB_MASK GENMASK(20, 13) > -#define SEL_STRB_SHIFT 13 > -#define SEL_FREQ_MASK GENMASK(12, 10) > -#define SEL_FREQ_SHIFT 10 > - > -/* PHY_STAT bit fields */ > -#define CAL_DONE BIT(6) > -#define DLL_RDY BIT(5) > - > -#define OTAP_DLY 0x0 > -#define ITAP_DLY 0x0 > -#define STRB 0x33 > - > -/* From ACS_eMMC51_16nFFC_RO1100_Userguide_v1p0.pdf p17 */ > -#define FREQSEL_200M_170M 0x0 > -#define FREQSEL_170M_140M 0x1 > -#define FREQSEL_140M_110M 0x2 > -#define FREQSEL_110M_80M 0x3 > -#define FREQSEL_80M_50M 0x4 > -#define FREQSEL_275M_250M 0x5 > -#define FREQSEL_250M_225M 0x6 > -#define FREQSEL_225M_200M 0x7 > - > -/* Phy power status */ > -#define PHY_UNINITIALIZED 0 > -#define PHY_INITIALIZED 1 > - > -/* > - * During init(400KHz) phy_settings will be called with 200MHZ clock > - * To avoid incorrectly setting the phy for init(400KHZ) "phy_power_sts" is used. > - * When actual clock is set always phy is powered off once and then powered on. > - * (sdhci_arasan_set_clock). That feature will be used to identify whether the > - * settings are for init phy_power_on or actual clock phy_power_on > - * 0 --> init settings > - * 1 --> actual settings > - */ > - > -struct thunderbay_emmc_phy { > - void __iomem *reg_base; > - struct clk *emmcclk; > - int phy_power_sts; > -}; > - > -static inline void update_reg(struct thunderbay_emmc_phy *tbh_phy, u32 offset, > - u32 mask, u32 shift, u32 val) > -{ > - u32 tmp; > - > - tmp = readl(tbh_phy->reg_base + offset); > - tmp &= ~mask; > - tmp |= val << shift; > - writel(tmp, tbh_phy->reg_base + offset); > -} > - > -static int thunderbay_emmc_phy_power(struct phy *phy, bool power_on) > -{ > - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); > - unsigned int freqsel = FREQSEL_200M_170M; > - unsigned long rate; > - static int lock; > - u32 val; > - int ret; > - > - /* Disable DLL */ > - rate = clk_get_rate(tbh_phy->emmcclk); > - switch (rate) { > - case 200000000: > - /* lock dll only when it is used, i.e only if SEL_DLY_TXCLK/RXCLK are 0 */ > - update_reg(tbh_phy, PHY_CFG_0, DLL_EN_MASK, DLL_EN_SHIFT, 0x0); > - break; > - > - /* dll lock not required for other frequencies */ > - case 50000000 ... 52000000: > - case 400000: > - default: > - break; > - } > - > - if (!power_on) > - return 0; > - > - rate = clk_get_rate(tbh_phy->emmcclk); > - switch (rate) { > - case 170000001 ... 200000000: > - freqsel = FREQSEL_200M_170M; > - break; > - > - case 140000001 ... 170000000: > - freqsel = FREQSEL_170M_140M; > - break; > - > - case 110000001 ... 140000000: > - freqsel = FREQSEL_140M_110M; > - break; > - > - case 80000001 ... 110000000: > - freqsel = FREQSEL_110M_80M; > - break; > - > - case 50000000 ... 80000000: > - freqsel = FREQSEL_80M_50M; > - break; > - > - case 250000001 ... 275000000: > - freqsel = FREQSEL_275M_250M; > - break; > - > - case 225000001 ... 250000000: > - freqsel = FREQSEL_250M_225M; > - break; > - > - case 200000001 ... 225000000: > - freqsel = FREQSEL_225M_200M; > - break; > - default: > - break; > - } > - /* Clock rate is checked against upper limit. It may fall low during init */ > - if (rate > 200000000) > - dev_warn(&phy->dev, "Unsupported rate: %lu\n", rate); > - > - udelay(5); > - > - if (lock == 0) { > - /* PDB will be done only once per boot */ > - update_reg(tbh_phy, PHY_CFG_0, PWR_DOWN_MASK, > - PWR_DOWN_SHIFT, 0x1); > - lock = 1; > - /* > - * According to the user manual, it asks driver to wait 5us for > - * calpad busy trimming. However it is documented that this value is > - * PVT(A.K.A. process, voltage and temperature) relevant, so some > - * failure cases are found which indicates we should be more tolerant > - * to calpad busy trimming. > - */ > - ret = readl_poll_timeout(tbh_phy->reg_base + PHY_STAT, > - val, (val & CAL_DONE), 10, 50); > - if (ret) { > - dev_err(&phy->dev, "caldone failed, ret=%d\n", ret); > - return ret; > - } > - } > - rate = clk_get_rate(tbh_phy->emmcclk); > - switch (rate) { > - case 200000000: > - /* Set frequency of the DLL operation */ > - update_reg(tbh_phy, PHY_CFG_2, SEL_FREQ_MASK, SEL_FREQ_SHIFT, freqsel); > - > - /* Enable DLL */ > - update_reg(tbh_phy, PHY_CFG_0, DLL_EN_MASK, DLL_EN_SHIFT, 0x1); > - > - /* > - * After enabling analog DLL circuits docs say that we need 10.2 us if > - * our source clock is at 50 MHz and that lock time scales linearly > - * with clock speed. If we are powering on the PHY and the card clock > - * is super slow (like 100kHz) this could take as long as 5.1 ms as > - * per the math: 10.2 us * (50000000 Hz / 100000 Hz) => 5.1 ms > - * hopefully we won't be running at 100 kHz, but we should still make > - * sure we wait long enough. > - * > - * NOTE: There appear to be corner cases where the DLL seems to take > - * extra long to lock for reasons that aren't understood. In some > - * extreme cases we've seen it take up to over 10ms (!). We'll be > - * generous and give it 50ms. > - */ > - ret = readl_poll_timeout(tbh_phy->reg_base + PHY_STAT, > - val, (val & DLL_RDY), 10, 50 * USEC_PER_MSEC); > - if (ret) { > - dev_err(&phy->dev, "dllrdy failed, ret=%d\n", ret); > - return ret; > - } > - break; > - > - default: > - break; > - } > - return 0; > -} > - > -static int thunderbay_emmc_phy_init(struct phy *phy) > -{ > - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); > - > - tbh_phy->emmcclk = clk_get(&phy->dev, "emmcclk"); > - > - return PTR_ERR_OR_ZERO(tbh_phy->emmcclk); > -} > - > -static int thunderbay_emmc_phy_exit(struct phy *phy) > -{ > - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); > - > - clk_put(tbh_phy->emmcclk); > - > - return 0; > -} > - > -static int thunderbay_emmc_phy_power_on(struct phy *phy) > -{ > - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); > - unsigned long rate; > - > - /* Overwrite capability bits configurable in bootloader */ > - update_reg(tbh_phy, CTRL_CFG_0, > - SUPPORT_HS_MASK, SUPPORT_HS_SHIFT, 0x1); > - update_reg(tbh_phy, CTRL_CFG_0, > - SUPPORT_8B_MASK, SUPPORT_8B_SHIFT, 0x1); > - update_reg(tbh_phy, CTRL_CFG_1, > - SUPPORT_SDR50_MASK, SUPPORT_SDR50_SHIFT, 0x1); > - update_reg(tbh_phy, CTRL_CFG_1, > - SUPPORT_DDR50_MASK, SUPPORT_DDR50_SHIFT, 0x1); > - update_reg(tbh_phy, CTRL_CFG_1, > - SUPPORT_SDR104_MASK, SUPPORT_SDR104_SHIFT, 0x1); > - update_reg(tbh_phy, CTRL_CFG_1, > - SUPPORT_HS400_MASK, SUPPORT_HS400_SHIFT, 0x1); > - update_reg(tbh_phy, CTRL_CFG_1, > - SUPPORT_64B_MASK, SUPPORT_64B_SHIFT, 0x1); > - > - if (tbh_phy->phy_power_sts == PHY_UNINITIALIZED) { > - /* Indicates initialization, settings for init, same as 400KHZ setting */ > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, SEL_DLY_TXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, SEL_DLY_RXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, ITAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, ITAP_DLY_SEL_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, OTAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, OTAP_DLY_SEL_SHIFT, 0); > - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, DLL_TRIM_ICP_SHIFT, 0); > - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, DR_TY_SHIFT, 0x1); > - > - } else if (tbh_phy->phy_power_sts == PHY_INITIALIZED) { > - /* Indicates actual clock setting */ > - rate = clk_get_rate(tbh_phy->emmcclk); > - switch (rate) { > - case 200000000: > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, > - SEL_DLY_TXCLK_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, > - SEL_DLY_RXCLK_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, > - ITAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, > - ITAP_DLY_SEL_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, > - OTAP_DLY_ENA_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, > - OTAP_DLY_SEL_SHIFT, 2); > - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, > - DLL_TRIM_ICP_SHIFT, 0x8); > - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, > - DR_TY_SHIFT, 0x1); > - /* For HS400 only */ > - update_reg(tbh_phy, PHY_CFG_2, SEL_STRB_MASK, > - SEL_STRB_SHIFT, STRB); > - break; > - > - case 50000000 ... 52000000: > - /* For both HS and DDR52 this setting works */ > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, > - SEL_DLY_TXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, > - SEL_DLY_RXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, > - ITAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, > - ITAP_DLY_SEL_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, > - OTAP_DLY_ENA_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, > - OTAP_DLY_SEL_SHIFT, 4); > - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, > - DLL_TRIM_ICP_SHIFT, 0x8); > - update_reg(tbh_phy, PHY_CFG_0, > - DR_TY_MASK, DR_TY_SHIFT, 0x1); > - break; > - > - case 400000: > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, > - SEL_DLY_TXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, > - SEL_DLY_RXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, > - ITAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, > - ITAP_DLY_SEL_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, > - OTAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, > - OTAP_DLY_SEL_SHIFT, 0); > - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, > - DLL_TRIM_ICP_SHIFT, 0); > - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, DR_TY_SHIFT, 0x1); > - break; > - > - default: > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, > - SEL_DLY_TXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, > - SEL_DLY_RXCLK_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, > - ITAP_DLY_ENA_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, > - ITAP_DLY_SEL_SHIFT, 0x0); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, > - OTAP_DLY_ENA_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, > - OTAP_DLY_SEL_SHIFT, 2); > - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, > - DLL_TRIM_ICP_SHIFT, 0x8); > - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, > - DR_TY_SHIFT, 0x1); > - break; > - } > - /* Reset, init seq called without phy_power_off, this indicates init seq */ > - tbh_phy->phy_power_sts = PHY_UNINITIALIZED; > - } > - > - update_reg(tbh_phy, PHY_CFG_0, RETRIM_EN_MASK, RETRIM_EN_SHIFT, 0x1); > - update_reg(tbh_phy, PHY_CFG_0, RETRIM_MASK, RETRIM_SHIFT, 0x0); > - > - return thunderbay_emmc_phy_power(phy, 1); > -} > - > -static int thunderbay_emmc_phy_power_off(struct phy *phy) > -{ > - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); > - > - tbh_phy->phy_power_sts = PHY_INITIALIZED; > - > - return thunderbay_emmc_phy_power(phy, 0); > -} > - > -static const struct phy_ops thunderbay_emmc_phy_ops = { > - .init = thunderbay_emmc_phy_init, > - .exit = thunderbay_emmc_phy_exit, > - .power_on = thunderbay_emmc_phy_power_on, > - .power_off = thunderbay_emmc_phy_power_off, > - .owner = THIS_MODULE, > -}; > - > -static const struct of_device_id thunderbay_emmc_phy_of_match[] = { > - { .compatible = "intel,thunderbay-emmc-phy", > - (void *)&thunderbay_emmc_phy_ops }, > - {} > -}; > -MODULE_DEVICE_TABLE(of, thunderbay_emmc_phy_of_match); > - > -static int thunderbay_emmc_phy_probe(struct platform_device *pdev) > -{ > - struct thunderbay_emmc_phy *tbh_phy; > - struct phy_provider *phy_provider; > - struct device *dev = &pdev->dev; > - const struct of_device_id *id; > - struct phy *generic_phy; > - struct resource *res; > - > - if (!dev->of_node) > - return -ENODEV; > - > - tbh_phy = devm_kzalloc(dev, sizeof(*tbh_phy), GFP_KERNEL); > - if (!tbh_phy) > - return -ENOMEM; > - > - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > - tbh_phy->reg_base = devm_ioremap_resource(&pdev->dev, res); > - if (IS_ERR(tbh_phy->reg_base)) > - return PTR_ERR(tbh_phy->reg_base); > - > - tbh_phy->phy_power_sts = PHY_UNINITIALIZED; > - id = of_match_node(thunderbay_emmc_phy_of_match, pdev->dev.of_node); > - if (!id) { > - dev_err(dev, "failed to get match_node\n"); > - return -EINVAL; > - } > - > - generic_phy = devm_phy_create(dev, dev->of_node, id->data); > - if (IS_ERR(generic_phy)) { > - dev_err(dev, "failed to create PHY\n"); > - return PTR_ERR(generic_phy); > - } > - > - phy_set_drvdata(generic_phy, tbh_phy); > - phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); > - > - return PTR_ERR_OR_ZERO(phy_provider); > -} > - > -static struct platform_driver thunderbay_emmc_phy_driver = { > - .probe = thunderbay_emmc_phy_probe, > - .driver = { > - .name = "thunderbay-emmc-phy", > - .of_match_table = thunderbay_emmc_phy_of_match, > - }, > -}; > -module_platform_driver(thunderbay_emmc_phy_driver); > - > -MODULE_AUTHOR("Nandhini S <nandhini.srikandan@intel.com>"); > -MODULE_AUTHOR("Rashmi A <rashmi.a@intel.com>"); > -MODULE_DESCRIPTION("Intel Thunder Bay eMMC PHY driver"); > -MODULE_LICENSE("GPL v2"); > -- > 2.17.1
diff --git a/drivers/phy/intel/Kconfig b/drivers/phy/intel/Kconfig index 18a3cc5b98c0..ac42bb2fb394 100644 --- a/drivers/phy/intel/Kconfig +++ b/drivers/phy/intel/Kconfig @@ -46,13 +46,3 @@ config PHY_INTEL_LGM_EMMC select GENERIC_PHY help Enable this to support the Intel EMMC PHY - -config PHY_INTEL_THUNDERBAY_EMMC - tristate "Intel Thunder Bay eMMC PHY driver" - depends on OF && (ARCH_THUNDERBAY || COMPILE_TEST) - select GENERIC_PHY - help - This option enables support for Intel Thunder Bay SoC eMMC PHY. - - To compile this driver as a module, choose M here: the module - will be called phy-intel-thunderbay-emmc.ko. diff --git a/drivers/phy/intel/Makefile b/drivers/phy/intel/Makefile index b7321d56b0bb..14550981a707 100644 --- a/drivers/phy/intel/Makefile +++ b/drivers/phy/intel/Makefile @@ -3,4 +3,3 @@ obj-$(CONFIG_PHY_INTEL_KEEMBAY_EMMC) += phy-intel-keembay-emmc.o obj-$(CONFIG_PHY_INTEL_KEEMBAY_USB) += phy-intel-keembay-usb.o obj-$(CONFIG_PHY_INTEL_LGM_COMBO) += phy-intel-lgm-combo.o obj-$(CONFIG_PHY_INTEL_LGM_EMMC) += phy-intel-lgm-emmc.o -obj-$(CONFIG_PHY_INTEL_THUNDERBAY_EMMC) += phy-intel-thunderbay-emmc.o diff --git a/drivers/phy/intel/phy-intel-thunderbay-emmc.c b/drivers/phy/intel/phy-intel-thunderbay-emmc.c deleted file mode 100644 index 593f6970b81e..000000000000 --- a/drivers/phy/intel/phy-intel-thunderbay-emmc.c +++ /dev/null @@ -1,509 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel ThunderBay eMMC PHY driver - * - * Copyright (C) 2021 Intel Corporation - * - */ - -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/iopoll.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/phy/phy.h> -#include <linux/platform_device.h> - -/* eMMC/SD/SDIO core/phy configuration registers */ -#define CTRL_CFG_0 0x00 -#define CTRL_CFG_1 0x04 -#define CTRL_PRESET_0 0x08 -#define CTRL_PRESET_1 0x0c -#define CTRL_PRESET_2 0x10 -#define CTRL_PRESET_3 0x14 -#define CTRL_PRESET_4 0x18 -#define CTRL_CFG_2 0x1c -#define CTRL_CFG_3 0x20 -#define PHY_CFG_0 0x24 -#define PHY_CFG_1 0x28 -#define PHY_CFG_2 0x2c -#define PHYBIST_CTRL 0x30 -#define SDHC_STAT3 0x34 -#define PHY_STAT 0x38 -#define PHYBIST_STAT_0 0x3c -#define PHYBIST_STAT_1 0x40 -#define EMMC_AXI 0x44 - -/* CTRL_PRESET_3 */ -#define CTRL_PRESET3_MASK GENMASK(31, 0) -#define CTRL_PRESET3_SHIFT 0 - -/* CTRL_CFG_0 bit fields */ -#define SUPPORT_HS_MASK BIT(26) -#define SUPPORT_HS_SHIFT 26 - -#define SUPPORT_8B_MASK BIT(24) -#define SUPPORT_8B_SHIFT 24 - -/* CTRL_CFG_1 bit fields */ -#define SUPPORT_SDR50_MASK BIT(28) -#define SUPPORT_SDR50_SHIFT 28 -#define SLOT_TYPE_MASK GENMASK(27, 26) -#define SLOT_TYPE_OFFSET 26 -#define SUPPORT_64B_MASK BIT(24) -#define SUPPORT_64B_SHIFT 24 -#define SUPPORT_HS400_MASK BIT(2) -#define SUPPORT_HS400_SHIFT 2 -#define SUPPORT_DDR50_MASK BIT(1) -#define SUPPORT_DDR50_SHIFT 1 -#define SUPPORT_SDR104_MASK BIT(0) -#define SUPPORT_SDR104_SHIFT 0 - -/* PHY_CFG_0 bit fields */ -#define SEL_DLY_TXCLK_MASK BIT(29) -#define SEL_DLY_TXCLK_SHIFT 29 -#define SEL_DLY_RXCLK_MASK BIT(28) -#define SEL_DLY_RXCLK_SHIFT 28 - -#define OTAP_DLY_ENA_MASK BIT(27) -#define OTAP_DLY_ENA_SHIFT 27 -#define OTAP_DLY_SEL_MASK GENMASK(26, 23) -#define OTAP_DLY_SEL_SHIFT 23 -#define ITAP_CHG_WIN_MASK BIT(22) -#define ITAP_CHG_WIN_SHIFT 22 -#define ITAP_DLY_ENA_MASK BIT(21) -#define ITAP_DLY_ENA_SHIFT 21 -#define ITAP_DLY_SEL_MASK GENMASK(20, 16) -#define ITAP_DLY_SEL_SHIFT 16 -#define RET_ENB_MASK BIT(15) -#define RET_ENB_SHIFT 15 -#define RET_EN_MASK BIT(14) -#define RET_EN_SHIFT 14 -#define DLL_IFF_MASK GENMASK(13, 11) -#define DLL_IFF_SHIFT 11 -#define DLL_EN_MASK BIT(10) -#define DLL_EN_SHIFT 10 -#define DLL_TRIM_ICP_MASK GENMASK(9, 6) -#define DLL_TRIM_ICP_SHIFT 6 -#define RETRIM_EN_MASK BIT(5) -#define RETRIM_EN_SHIFT 5 -#define RETRIM_MASK BIT(4) -#define RETRIM_SHIFT 4 -#define DR_TY_MASK GENMASK(3, 1) -#define DR_TY_SHIFT 1 -#define PWR_DOWN_MASK BIT(0) -#define PWR_DOWN_SHIFT 0 - -/* PHY_CFG_1 bit fields */ -#define REN_DAT_MASK GENMASK(19, 12) -#define REN_DAT_SHIFT 12 -#define REN_CMD_MASK BIT(11) -#define REN_CMD_SHIFT 11 -#define REN_STRB_MASK BIT(10) -#define REN_STRB_SHIFT 10 -#define PU_STRB_MASK BIT(20) -#define PU_STRB_SHIFT 20 - -/* PHY_CFG_2 bit fields */ -#define CLKBUF_MASK GENMASK(24, 21) -#define CLKBUF_SHIFT 21 -#define SEL_STRB_MASK GENMASK(20, 13) -#define SEL_STRB_SHIFT 13 -#define SEL_FREQ_MASK GENMASK(12, 10) -#define SEL_FREQ_SHIFT 10 - -/* PHY_STAT bit fields */ -#define CAL_DONE BIT(6) -#define DLL_RDY BIT(5) - -#define OTAP_DLY 0x0 -#define ITAP_DLY 0x0 -#define STRB 0x33 - -/* From ACS_eMMC51_16nFFC_RO1100_Userguide_v1p0.pdf p17 */ -#define FREQSEL_200M_170M 0x0 -#define FREQSEL_170M_140M 0x1 -#define FREQSEL_140M_110M 0x2 -#define FREQSEL_110M_80M 0x3 -#define FREQSEL_80M_50M 0x4 -#define FREQSEL_275M_250M 0x5 -#define FREQSEL_250M_225M 0x6 -#define FREQSEL_225M_200M 0x7 - -/* Phy power status */ -#define PHY_UNINITIALIZED 0 -#define PHY_INITIALIZED 1 - -/* - * During init(400KHz) phy_settings will be called with 200MHZ clock - * To avoid incorrectly setting the phy for init(400KHZ) "phy_power_sts" is used. - * When actual clock is set always phy is powered off once and then powered on. - * (sdhci_arasan_set_clock). That feature will be used to identify whether the - * settings are for init phy_power_on or actual clock phy_power_on - * 0 --> init settings - * 1 --> actual settings - */ - -struct thunderbay_emmc_phy { - void __iomem *reg_base; - struct clk *emmcclk; - int phy_power_sts; -}; - -static inline void update_reg(struct thunderbay_emmc_phy *tbh_phy, u32 offset, - u32 mask, u32 shift, u32 val) -{ - u32 tmp; - - tmp = readl(tbh_phy->reg_base + offset); - tmp &= ~mask; - tmp |= val << shift; - writel(tmp, tbh_phy->reg_base + offset); -} - -static int thunderbay_emmc_phy_power(struct phy *phy, bool power_on) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - unsigned int freqsel = FREQSEL_200M_170M; - unsigned long rate; - static int lock; - u32 val; - int ret; - - /* Disable DLL */ - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 200000000: - /* lock dll only when it is used, i.e only if SEL_DLY_TXCLK/RXCLK are 0 */ - update_reg(tbh_phy, PHY_CFG_0, DLL_EN_MASK, DLL_EN_SHIFT, 0x0); - break; - - /* dll lock not required for other frequencies */ - case 50000000 ... 52000000: - case 400000: - default: - break; - } - - if (!power_on) - return 0; - - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 170000001 ... 200000000: - freqsel = FREQSEL_200M_170M; - break; - - case 140000001 ... 170000000: - freqsel = FREQSEL_170M_140M; - break; - - case 110000001 ... 140000000: - freqsel = FREQSEL_140M_110M; - break; - - case 80000001 ... 110000000: - freqsel = FREQSEL_110M_80M; - break; - - case 50000000 ... 80000000: - freqsel = FREQSEL_80M_50M; - break; - - case 250000001 ... 275000000: - freqsel = FREQSEL_275M_250M; - break; - - case 225000001 ... 250000000: - freqsel = FREQSEL_250M_225M; - break; - - case 200000001 ... 225000000: - freqsel = FREQSEL_225M_200M; - break; - default: - break; - } - /* Clock rate is checked against upper limit. It may fall low during init */ - if (rate > 200000000) - dev_warn(&phy->dev, "Unsupported rate: %lu\n", rate); - - udelay(5); - - if (lock == 0) { - /* PDB will be done only once per boot */ - update_reg(tbh_phy, PHY_CFG_0, PWR_DOWN_MASK, - PWR_DOWN_SHIFT, 0x1); - lock = 1; - /* - * According to the user manual, it asks driver to wait 5us for - * calpad busy trimming. However it is documented that this value is - * PVT(A.K.A. process, voltage and temperature) relevant, so some - * failure cases are found which indicates we should be more tolerant - * to calpad busy trimming. - */ - ret = readl_poll_timeout(tbh_phy->reg_base + PHY_STAT, - val, (val & CAL_DONE), 10, 50); - if (ret) { - dev_err(&phy->dev, "caldone failed, ret=%d\n", ret); - return ret; - } - } - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 200000000: - /* Set frequency of the DLL operation */ - update_reg(tbh_phy, PHY_CFG_2, SEL_FREQ_MASK, SEL_FREQ_SHIFT, freqsel); - - /* Enable DLL */ - update_reg(tbh_phy, PHY_CFG_0, DLL_EN_MASK, DLL_EN_SHIFT, 0x1); - - /* - * After enabling analog DLL circuits docs say that we need 10.2 us if - * our source clock is at 50 MHz and that lock time scales linearly - * with clock speed. If we are powering on the PHY and the card clock - * is super slow (like 100kHz) this could take as long as 5.1 ms as - * per the math: 10.2 us * (50000000 Hz / 100000 Hz) => 5.1 ms - * hopefully we won't be running at 100 kHz, but we should still make - * sure we wait long enough. - * - * NOTE: There appear to be corner cases where the DLL seems to take - * extra long to lock for reasons that aren't understood. In some - * extreme cases we've seen it take up to over 10ms (!). We'll be - * generous and give it 50ms. - */ - ret = readl_poll_timeout(tbh_phy->reg_base + PHY_STAT, - val, (val & DLL_RDY), 10, 50 * USEC_PER_MSEC); - if (ret) { - dev_err(&phy->dev, "dllrdy failed, ret=%d\n", ret); - return ret; - } - break; - - default: - break; - } - return 0; -} - -static int thunderbay_emmc_phy_init(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - - tbh_phy->emmcclk = clk_get(&phy->dev, "emmcclk"); - - return PTR_ERR_OR_ZERO(tbh_phy->emmcclk); -} - -static int thunderbay_emmc_phy_exit(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - - clk_put(tbh_phy->emmcclk); - - return 0; -} - -static int thunderbay_emmc_phy_power_on(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - unsigned long rate; - - /* Overwrite capability bits configurable in bootloader */ - update_reg(tbh_phy, CTRL_CFG_0, - SUPPORT_HS_MASK, SUPPORT_HS_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_0, - SUPPORT_8B_MASK, SUPPORT_8B_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_SDR50_MASK, SUPPORT_SDR50_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_DDR50_MASK, SUPPORT_DDR50_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_SDR104_MASK, SUPPORT_SDR104_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_HS400_MASK, SUPPORT_HS400_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_64B_MASK, SUPPORT_64B_SHIFT, 0x1); - - if (tbh_phy->phy_power_sts == PHY_UNINITIALIZED) { - /* Indicates initialization, settings for init, same as 400KHZ setting */ - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, OTAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, OTAP_DLY_SEL_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, DLL_TRIM_ICP_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, DR_TY_SHIFT, 0x1); - - } else if (tbh_phy->phy_power_sts == PHY_INITIALIZED) { - /* Indicates actual clock setting */ - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 200000000: - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 2); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0x8); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, - DR_TY_SHIFT, 0x1); - /* For HS400 only */ - update_reg(tbh_phy, PHY_CFG_2, SEL_STRB_MASK, - SEL_STRB_SHIFT, STRB); - break; - - case 50000000 ... 52000000: - /* For both HS and DDR52 this setting works */ - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 4); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0x8); - update_reg(tbh_phy, PHY_CFG_0, - DR_TY_MASK, DR_TY_SHIFT, 0x1); - break; - - case 400000: - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, DR_TY_SHIFT, 0x1); - break; - - default: - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 2); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0x8); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, - DR_TY_SHIFT, 0x1); - break; - } - /* Reset, init seq called without phy_power_off, this indicates init seq */ - tbh_phy->phy_power_sts = PHY_UNINITIALIZED; - } - - update_reg(tbh_phy, PHY_CFG_0, RETRIM_EN_MASK, RETRIM_EN_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, RETRIM_MASK, RETRIM_SHIFT, 0x0); - - return thunderbay_emmc_phy_power(phy, 1); -} - -static int thunderbay_emmc_phy_power_off(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - - tbh_phy->phy_power_sts = PHY_INITIALIZED; - - return thunderbay_emmc_phy_power(phy, 0); -} - -static const struct phy_ops thunderbay_emmc_phy_ops = { - .init = thunderbay_emmc_phy_init, - .exit = thunderbay_emmc_phy_exit, - .power_on = thunderbay_emmc_phy_power_on, - .power_off = thunderbay_emmc_phy_power_off, - .owner = THIS_MODULE, -}; - -static const struct of_device_id thunderbay_emmc_phy_of_match[] = { - { .compatible = "intel,thunderbay-emmc-phy", - (void *)&thunderbay_emmc_phy_ops }, - {} -}; -MODULE_DEVICE_TABLE(of, thunderbay_emmc_phy_of_match); - -static int thunderbay_emmc_phy_probe(struct platform_device *pdev) -{ - struct thunderbay_emmc_phy *tbh_phy; - struct phy_provider *phy_provider; - struct device *dev = &pdev->dev; - const struct of_device_id *id; - struct phy *generic_phy; - struct resource *res; - - if (!dev->of_node) - return -ENODEV; - - tbh_phy = devm_kzalloc(dev, sizeof(*tbh_phy), GFP_KERNEL); - if (!tbh_phy) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - tbh_phy->reg_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(tbh_phy->reg_base)) - return PTR_ERR(tbh_phy->reg_base); - - tbh_phy->phy_power_sts = PHY_UNINITIALIZED; - id = of_match_node(thunderbay_emmc_phy_of_match, pdev->dev.of_node); - if (!id) { - dev_err(dev, "failed to get match_node\n"); - return -EINVAL; - } - - generic_phy = devm_phy_create(dev, dev->of_node, id->data); - if (IS_ERR(generic_phy)) { - dev_err(dev, "failed to create PHY\n"); - return PTR_ERR(generic_phy); - } - - phy_set_drvdata(generic_phy, tbh_phy); - phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); - - return PTR_ERR_OR_ZERO(phy_provider); -} - -static struct platform_driver thunderbay_emmc_phy_driver = { - .probe = thunderbay_emmc_phy_probe, - .driver = { - .name = "thunderbay-emmc-phy", - .of_match_table = thunderbay_emmc_phy_of_match, - }, -}; -module_platform_driver(thunderbay_emmc_phy_driver); - -MODULE_AUTHOR("Nandhini S <nandhini.srikandan@intel.com>"); -MODULE_AUTHOR("Rashmi A <rashmi.a@intel.com>"); -MODULE_DESCRIPTION("Intel Thunder Bay eMMC PHY driver"); -MODULE_LICENSE("GPL v2");