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Date: Wed, 19 Oct 2016 16:24:41 +0530
From: Vivek Gautam <vivek.gautam@...eaurora.org>
To: kishon@...com, robh+dt@...nel.org, mark.rutland@....com
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, srinivas.kandagatla@...aro.org
Subject: Re: [PATCH 2/2] phy: qcom-qmp: new qmp phy driver for qcom-chipsets
CC: Srinivas Kandagatla
On 10/19/2016 04:13 PM, Vivek Gautam wrote:
> Qualcomm SOCs have QMP phy controller that provides support
> to a number of controller, viz. PCIe, UFS, and USB.
> Add a new driver, based on generic phy framework, for this
> phy controller.
>
> USB3-phy changes: Based on phy-msm-ssusb-qmp driver available on
> msm-4.4 kernel @codeaurora[1].
> PCIe-phy changes: Based on msm8996-pcie-phy driver posted by
> Srinivas [2].
>
> [1] https://source.codeaurora.org/quic/la/kernel/msm-4.4/log/?h=caf/3.18/msm-3.18
> [2] https://patchwork.kernel.org/patch/9318947/
>
> Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
> Cc: Kishon Vijay Abraham I <kishon@...com>
> ---
> .../devicetree/bindings/phy/qcom-qmp-phy.txt | 61 ++
> drivers/phy/Kconfig | 8 +
> drivers/phy/Makefile | 1 +
> drivers/phy/phy-qcom-qmp.c | 1154 ++++++++++++++++++++
> 4 files changed, 1224 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt
> create mode 100644 drivers/phy/phy-qcom-qmp.c
>
> diff --git a/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt
> new file mode 100644
> index 0000000..90214aa
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt
> @@ -0,0 +1,61 @@
> +Qualcomm QMP PHY
> +----------------
> +
> +QMP phy controller supports physical layer functionality for a number of
> +controllers on Qualcomm chipsets, such as, PCIe, UFS, and USB.
> +
> +Required properties:
> + - compatible: compatible list, contains:
> + "qcom,msm8996-qmp-pcie-phy" for 14nm PCIe phy on msm8996,
> + "qcom,msm8996-qmp-usb3-phy" for 14nm USB3 phy on msm8996.
> + - reg: offset and length of the PHY register set.
> + - #phy-cells: must be 1
> + - Cell after phy phandle should be the port (lane) number.
> + - clocks: a list of phandles and clock-specifier pairs,
> + one for each entry in clock-names.
> + - clock-names: must be "cfg_ahb" for phy config clock,
> + "aux" for phy aux clock,
> + "ref_clk" for 19.2 MHz ref clk,
> + "ref_clk_src" for reference clock source,
> + "pipe<port-number>" for pipe clock specific to
> + each port/lane (Optional).
> + - resets: a list of phandles and reset controller specifier pairs,
> + one for each entry in reset-names.
> + - reset-names: must be "phy" for reset of phy block,
> + "common" for phy common block reset,
> + "cfg" for phy's ahb cfg block reset (Optional).
> + "port<port-number>" for reset specific to
> + each port/lane. (Optional)
> + - vdda-phy-supply: Phandle to a regulator supply to PHY core block.
> + - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
> +
> +Optional properties:
> + - vddp-ref-clk-supply: Phandle to a regulator supply to any specific refclk
> + pll block.
> +
> +Example:
> + pcie_phy: pciephy@...00 {
> + compatible = "qcom,qmp-14nm-pcie-phy";
> + reg = <0x034000 0x3fff>;
> + #phy-cells = <1>;
> +
> + clocks = <&gcc GCC_PCIE_PHY_AUX_CLK>,
> + <&gcc GCC_PCIE_PHY_CFG_AHB_CLK>,
> + <&gcc GCC_PCIE_0_PIPE_CLK>,
> + <&gcc GCC_PCIE_1_PIPE_CLK>,
> + <&gcc GCC_PCIE_2_PIPE_CLK>;
> + clock-names = "aux", "cfg_ahb",
> + "pipe0", "pipe1", "pipe2";
> +
> + vdda-phy-supply = <&pm8994_l28>;
> + vdda-pll-supply = <&pm8994_l12>;
> +
> + resets = <&gcc GCC_PCIE_PHY_BCR>,
> + <&gcc GCC_PCIE_PHY_COM_BCR>,
> + <&gcc GCC_PCIE_PHY_COM_NOCSR_BCR>,
> + <&gcc GCC_PCIE_0_PHY_BCR>,
> + <&gcc GCC_PCIE_1_PHY_BCR>,
> + <&gcc GCC_PCIE_2_PHY_BCR>;
> + reset-names = "phy", "common", "cfg",
> + "lane0", "lane1", "lane2";
> + };
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index 5547984..d5e2b50f 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -446,6 +446,14 @@ config PHY_STIH41X_USB
> Enable this to support the USB transceiver that is part of
> STMicroelectronics STiH41x SoC series.
>
> +config PHY_QCOM_QMP
> + tristate "Qualcomm QMP PHY Driver"
> + depends on OF && (ARCH_QCOM || COMPILE_TEST)
> + select GENERIC_PHY
> + help
> + Enable this to support the QMP PHY transceiver that is used
> + with controllers such as PCIe, UFS, and USB on Qualcomm chips.
> +
> config PHY_QCOM_QUSB2
> tristate "Qualcomm QUSB2 PHY Driver"
> depends on OF && (ARCH_QCOM || COMPILE_TEST)
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index 848489d..fde9fba 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -51,6 +51,7 @@ obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o
> obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
> obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o
> obj-$(CONFIG_PHY_STIH41X_USB) += phy-stih41x-usb.o
> +obj-$(CONFIG_PHY_QCOM_QMP) += phy-qcom-qmp.o
> obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o
> obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs.o
> obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-20nm.o
> diff --git a/drivers/phy/phy-qcom-qmp.c b/drivers/phy/phy-qcom-qmp.c
> new file mode 100644
> index 0000000..7e89179
> --- /dev/null
> +++ b/drivers/phy/phy-qcom-qmp.c
> @@ -0,0 +1,1154 @@
> +/*
> + * Copyright (c) 2016, The Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/reset.h>
> +#include <linux/slab.h>
> +
> +#include <dt-bindings/phy/phy.h>
> +
> +/* QMP PHY QSERDES COM registers */
> +#define QSERDES_COM_BG_TIMER 0x00c
> +#define QSERDES_COM_SSC_EN_CENTER 0x010
> +#define QSERDES_COM_SSC_ADJ_PER1 0x014
> +#define QSERDES_COM_SSC_ADJ_PER2 0x018
> +#define QSERDES_COM_SSC_PER1 0x01c
> +#define QSERDES_COM_SSC_PER2 0x020
> +#define QSERDES_COM_SSC_STEP_SIZE1 0x024
> +#define QSERDES_COM_SSC_STEP_SIZE2 0x028
> +#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034
> +#define QSERDES_COM_CLK_ENABLE1 0x038
> +#define QSERDES_COM_SYS_CLK_CTRL 0x03c
> +#define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040
> +#define QSERDES_COM_PLL_IVCO 0x048
> +#define QSERDES_COM_LOCK_CMP1_MODE0 0x04c
> +#define QSERDES_COM_LOCK_CMP2_MODE0 0x050
> +#define QSERDES_COM_LOCK_CMP3_MODE0 0x054
> +#define QSERDES_COM_LOCK_CMP1_MODE1 0x058
> +#define QSERDES_COM_LOCK_CMP2_MODE1 0x05c
> +#define QSERDES_COM_LOCK_CMP3_MODE1 0x060
> +#define QSERDES_COM_BG_TRIM 0x070
> +#define QSERDES_COM_CLK_EP_DIV 0x074
> +#define QSERDES_COM_CP_CTRL_MODE0 0x078
> +#define QSERDES_COM_CP_CTRL_MODE1 0x07c
> +#define QSERDES_COM_PLL_RCTRL_MODE0 0x084
> +#define QSERDES_COM_PLL_RCTRL_MODE1 0x088
> +#define QSERDES_COM_PLL_CCTRL_MODE0 0x090
> +#define QSERDES_COM_PLL_CCTRL_MODE1 0x094
> +#define QSERDES_COM_SYSCLK_EN_SEL 0x0ac
> +#define QSERDES_COM_RESETSM_CNTRL 0x0b4
> +#define QSERDES_COM_RESTRIM_CTRL 0x0bc
> +#define QSERDES_COM_RESCODE_DIV_NUM 0x0c4
> +#define QSERDES_COM_LOCK_CMP_EN 0x0c8
> +#define QSERDES_COM_LOCK_CMP_CFG 0x0cc
> +#define QSERDES_COM_DEC_START_MODE0 0x0d0
> +#define QSERDES_COM_DEC_START_MODE1 0x0d4
> +#define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc
> +#define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0
> +#define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4
> +#define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8
> +#define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec
> +#define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0
> +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108
> +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c
> +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110
> +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114
> +#define QSERDES_COM_VCO_TUNE_CTRL 0x124
> +#define QSERDES_COM_VCO_TUNE_MAP 0x128
> +#define QSERDES_COM_VCO_TUNE1_MODE0 0x12c
> +#define QSERDES_COM_VCO_TUNE2_MODE0 0x130
> +#define QSERDES_COM_VCO_TUNE1_MODE1 0x134
> +#define QSERDES_COM_VCO_TUNE2_MODE1 0x138
> +#define QSERDES_COM_VCO_TUNE_TIMER1 0x144
> +#define QSERDES_COM_VCO_TUNE_TIMER2 0x148
> +#define QSERDES_COM_BG_CTRL 0x170
> +#define QSERDES_COM_CLK_SELECT 0x174
> +#define QSERDES_COM_HSCLK_SEL 0x178
> +#define QSERDES_COM_CORECLK_DIV 0x184
> +#define QSERDES_COM_CORE_CLK_EN 0x18c
> +#define QSERDES_COM_C_READY_STATUS 0x190
> +#define QSERDES_COM_CMN_CONFIG 0x194
> +#define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c
> +#define QSERDES_COM_DEBUG_BUS0 0x1a0
> +#define QSERDES_COM_DEBUG_BUS1 0x1a4
> +#define QSERDES_COM_DEBUG_BUS2 0x1a8
> +#define QSERDES_COM_DEBUG_BUS3 0x1ac
> +#define QSERDES_COM_DEBUG_BUS_SEL 0x1b0
> +#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc
> +
> +/* QMP PHY TX registers */
> +#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054
> +#define QSERDES_TX_DEBUG_BUS_SEL 0x064
> +#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068
> +#define QSERDES_TX_LANE_MODE 0x094
> +#define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac
> +
> +/* QMP PHY RX registers */
> +#define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010
> +#define QSERDES_RX_UCDR_SO_GAIN 0x01c
> +#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040
> +#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048
> +#define QSERDES_RX_RX_TERM_BW 0x090
> +#define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4
> +#define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8
> +#define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc
> +#define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0
> +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8
> +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc
> +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0
> +#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108
> +#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c
> +#define QSERDES_RX_SIGDET_ENABLES 0x110
> +#define QSERDES_RX_SIGDET_CNTRL 0x114
> +#define QSERDES_RX_SIGDET_LVL 0x118
> +#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c
> +#define QSERDES_RX_RX_BAND 0x120
> +#define QSERDES_RX_RX_INTERFACE_MODE 0x12c
> +
> +/* QMP PHY PCS registers */
> +#define QPHY_SW_RESET 0x00
> +#define QPHY_POWER_DOWN_CONTROL 0x04
> +#define QPHY_START_CTRL 0x08
> +#define QPHY_TXDEEMPH_M6DB_V0 0x24
> +#define QPHY_TXDEEMPH_M3P5DB_V0 0x28
> +#define QPHY_ENDPOINT_REFCLK_DRIVE 0x54
> +#define QPHY_RX_IDLE_DTCT_CNTRL 0x58
> +#define QPHY_POWER_STATE_CONFIG1 0x60
> +#define QPHY_POWER_STATE_CONFIG2 0x64
> +#define QPHY_POWER_STATE_CONFIG4 0x6c
> +#define QPHY_LOCK_DETECT_CONFIG1 0x80
> +#define QPHY_LOCK_DETECT_CONFIG2 0x84
> +#define QPHY_LOCK_DETECT_CONFIG3 0x88
> +#define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0
> +#define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4
> +
> +/* PHY_SW_RESET bit */
> +#define PHY_SW_RESET BIT(0)
> +/* PHY_POWER_DOWN_CONTROL */
> +#define PHY_SW_PWRDN BIT(0)
> +#define PHY_REFCLK_DRV_DSBL BIT(1)
> +/* PHY_START_CONTROL bits */
> +#define PHY_SERDES_START BIT(0)
> +#define PHY_PCS_START BIT(1)
> +#define PHY_PLL_READY_GATE_EN BIT(3)
> +/* PHY_PCS_STATUS bit */
> +#define MASK_PHYSTATUS BIT(6)
> +/* PCS_READY_STATUS bit */
> +#define MASK_COM_PCS_READY BIT(0)
> +
> +#define REFCLK_STABILIZATION_DELAY_US_MIN 1000
> +#define REFCLK_STABILIZATION_DELAY_US_MAX 1005
> +#define PHY_READY_TIMEOUT_COUNT 10
> +#define POWER_DOWN_DELAY_US_MIN 10
> +#define POWER_DOWN_DELAY_US_MAX 11
> +
> +#define MAX_PROP_NAME 32
> +
> +struct qmp_phy_init_tbl {
> + unsigned int reg_offset;
> + unsigned int cfg_val;
> + /*
> + * register part of layout ?
> + * if yes, then reg_offset gives index in the reg-layout
> + */
> + int in_layout;
> +};
> +#define QCOM_QMP_PHY_INIT_CFG(reg, val) \
> + { \
> + .reg_offset = reg, \
> + .cfg_val = val, \
> + }
> +#define QCOM_QMP_PHY_INIT_CFG_L(reg, val) \
> + { \
> + .reg_offset = reg, \
> + .cfg_val = val, \
> + .in_layout = 1, \
> + }
> +
> +/* set of registers with offsets different per-PHY */
> +enum qphy_reg_layout {
> + /* Common block control registers */
> + QPHY_COM_SW_RESET,
> + QPHY_COM_POWER_DOWN_CONTROL,
> + QPHY_COM_START_CONTROL,
> + QPHY_COM_PCS_READY_STATUS,
> + /* PCS registers */
> + QPHY_PLL_LOCK_CHK_DLY_TIME,
> + QPHY_FLL_CNTRL1,
> + QPHY_FLL_CNTRL2,
> + QPHY_FLL_CNT_VAL_L,
> + QPHY_FLL_CNT_VAL_H_TOL,
> + QPHY_FLL_MAN_CODE,
> + QPHY_PCS_READY_STATUS,
> +};
> +
> +unsigned int pciephy_regs_layout[] = {
> + [QPHY_COM_SW_RESET] = 0x400,
> + [QPHY_COM_POWER_DOWN_CONTROL] = 0x404,
> + [QPHY_COM_START_CONTROL] = 0x408,
> + [QPHY_COM_PCS_READY_STATUS] = 0x448,
> + [QPHY_PLL_LOCK_CHK_DLY_TIME] = 0xa8,
> + [QPHY_FLL_CNTRL1] = 0xc4,
> + [QPHY_FLL_CNTRL2] = 0xc8,
> + [QPHY_FLL_CNT_VAL_L] = 0xcc,
> + [QPHY_FLL_CNT_VAL_H_TOL] = 0xd0,
> + [QPHY_FLL_MAN_CODE] = 0xd4,
> + [QPHY_PCS_READY_STATUS] = 0x174,
> +};
> +
> +unsigned int usb3phy_regs_layout[] = {
> + [QPHY_FLL_CNTRL1] = 0xc0,
> + [QPHY_FLL_CNTRL2] = 0xc4,
> + [QPHY_FLL_CNT_VAL_L] = 0xc8,
> + [QPHY_FLL_CNT_VAL_H_TOL] = 0xcc,
> + [QPHY_FLL_MAN_CODE] = 0xd0,
> + [QPHY_PCS_READY_STATUS] = 0x17c,
> +};
> +
> +static struct qmp_phy_init_tbl pciephy_serdes_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x1c),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x33),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_EN, 0x42),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER1, 0xff),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER2, 0x1f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CORECLK_DIV, 0x0a),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x09),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x1a),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x0a),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x33),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x02),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_BUF_ENABLE, 0x1f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x04),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN1_MODE0, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x02),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0x2f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x19),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_RESCODE_DIV_NUM, 0x15),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CLK_EP_DIV, 0x19),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_RESCODE_DIV_NUM, 0x40),
> +};
> +
> +static struct qmp_phy_init_tbl pciephy_tx_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06),
> +};
> +
> +static struct qmp_phy_init_tbl pciephy_rx_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_ENABLES, 0x1c),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xdb),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_BAND, 0x18),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x04),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN_HALF, 0x04),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x4b),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x14),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_LVL, 0x19),
> +};
> +
> +static struct qmp_phy_init_tbl pciephy_pcs_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QPHY_RX_IDLE_DTCT_CNTRL, 0x4c),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_PWRUP_RESET_DLY_TIME_AUXCLK, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_LP_WAKEUP_DLY_TIME_AUXCLK, 0x01),
> +
> + QCOM_QMP_PHY_INIT_CFG_L(QPHY_PLL_LOCK_CHK_DLY_TIME, 0x05),
> +
> + QCOM_QMP_PHY_INIT_CFG(QPHY_ENDPOINT_REFCLK_DRIVE, 0x05),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_POWER_DOWN_CONTROL, 0x02),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG4, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG1, 0xa3),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_TXDEEMPH_M3P5DB_V0, 0x0e),
> +};
> +
> +static struct qmp_phy_init_tbl usb3phy_serdes_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x14),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x30),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x04),
> + /* PLL and Loop filter settings */
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_CTRL, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x15),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x34),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_CFG, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x0a),
> + /* SSC settings */
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0xde),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x07),
> +};
> +
> +static struct qmp_phy_init_tbl usb3phy_tx_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_TX_RCV_DETECT_LVL_2, 0x12),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06),
> +};
> +
> +static struct qmp_phy_init_tbl usb3phy_rx_init_tbl[] = {
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x04),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x02),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4c),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xbb),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_CNTRL, 0x03),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_LVL, 0x18),
> + QCOM_QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x16),
> +};
> +
> +static struct qmp_phy_init_tbl usb3phy_pcs_init_tbl[] = {
> + /* FLL settings */
> + QCOM_QMP_PHY_INIT_CFG_L(QPHY_FLL_CNTRL2, 0x03),
> + QCOM_QMP_PHY_INIT_CFG_L(QPHY_FLL_CNTRL1, 0x02),
> + QCOM_QMP_PHY_INIT_CFG_L(QPHY_FLL_CNT_VAL_L, 0x09),
> + QCOM_QMP_PHY_INIT_CFG_L(QPHY_FLL_CNT_VAL_H_TOL, 0x42),
> + QCOM_QMP_PHY_INIT_CFG_L(QPHY_FLL_MAN_CODE, 0x85),
> +
> + /* Lock Det settings */
> + QCOM_QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG1, 0xd1),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG2, 0x1f),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG3, 0x47),
> + QCOM_QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG2, 0x08),
> +};
> +
> +/**
> + * struct qmp_phy_init_cfg:- per-PHY init config.
> + */
> +struct qmp_phy_init_cfg {
> + /*
> + * @type: phy-type - PCIE/UFS/USB
> + * @nlanes: number of lanes provided by phy
> + * @tx_offsets: array of offsets of Tx block from PHY base
> + * @rx_offsets: array of offsets of Rx block from PHY base
> + * @pcs_offsets: array of offsets of PCS block from PHY base
> + */
> + unsigned int type;
> + int nlanes;
> + unsigned int *tx_offsets;
> + unsigned int *rx_offsets;
> + unsigned int *pcs_offsets;
> +
> + /* Initialization sequence for PHY blocks - Serdes, tx, rx, pcs */
> + struct qmp_phy_init_tbl *phy_init_serdes_tbl;
> + int phy_init_serdes_tbl_sz;
> + struct qmp_phy_init_tbl *phy_init_tx_tbl;
> + int phy_init_tx_tbl_sz;
> + struct qmp_phy_init_tbl *phy_init_rx_tbl;
> + int phy_init_rx_tbl_sz;
> + struct qmp_phy_init_tbl *phy_init_pcs_tbl;
> + int phy_init_pcs_tbl_sz;
> +
> + /* array of registers with different offsets */
> + unsigned int *regs;
> +
> + unsigned int mask_start_ctrl;
> + unsigned int mask_pwr_dn_ctrl;
> + /* true, if PHY has a separate PHY_COM_CNTRL block */
> + bool has_phy_com_ctrl;
> +};
> +
> +/**
> + * struct qmp_phy_desc:- per-lane phy-descriptor.
> + *
> + * @phy: pointer to generic phy
> + * @tx: pointer to iomapped memory space for PHY's tx
> + * @rx: pointer to iomapped memory space for PHY's rx
> + * @pcs: pointer to iomapped memory space for PHY's pcs
> + * @pipe_clk: pointer to pipe lock
> + * @index: lane index
> + * @qphy: pointer to QMP phy to which this lane belongs
> + * @lane_rst: pointer to lane's reset controller
> + */
> +struct qmp_phy_desc {
> + struct phy *phy;
> + void __iomem *tx;
> + void __iomem *rx;
> + void __iomem *pcs;
> + struct clk *pipe_clk;
> + unsigned int index;
> + struct qcom_qmp_phy *qphy;
> + struct reset_control *lane_rst;
> +};
> +
> +/**
> + * struct qcom_qmp_phy:- structure holding QMP PHY attributes.
> + *
> + * @dev: pointer to device
> + * @serdes: pointer to iomapped memory space for phy's serdes
> + *
> + * @aux_clk: pointer to phy core clock
> + * @cfg_ahb_clk: pointer to AHB2PHY interface clock
> + * @ref_clk: pointer to reference clock
> + * @ref_clk_src: pointer to source to reference clock
> + * @clk_enabled: check if clocks are enabled or not
> + *
> + * @vdda_phy: vdd supply to the phy core block
> + * @vdda_pll: 1.8V vdd supply to ref_clk block
> + * @vddp_ref_clk: vdd supply to specific ref_clk block
> + *
> + * @phy_rst: Pointer to phy reset control
> + * @phycom_rst: Pointer to phy common reset control
> + * @phycfg_rst: Pointer to phy ahb cfg reset control (Optional)
> + *
> + * @cfg: pointer to init config for each phys
> + * @phys: array of pointer to per-lane phy descriptors
> + * @phy_mutex: mutex lock for PHY common block initialization
> + * @init_count: Phy common block initialization count
> + */
> +struct qcom_qmp_phy {
> + struct device *dev;
> + void __iomem *serdes;
> +
> + struct clk *aux_clk;
> + struct clk *cfg_ahb_clk;
> + struct clk *ref_clk;
> + struct clk *ref_clk_src;
> + bool clk_enabled;
> +
> + struct regulator *vdda_phy;
> + struct regulator *vdda_pll;
> + struct regulator *vddp_ref_clk;
> +
> + struct reset_control *phy_rst;
> + struct reset_control *phycom_rst;
> + struct reset_control *phycfg_rst;
> +
> + const struct qmp_phy_init_cfg *cfg;
> + struct qmp_phy_desc **phys;
> +
> + struct mutex phy_mutex;
> + int init_count;
> +};
> +
> +static inline void qphy_setbits(u32 bitmask, void __iomem *reg)
> +{
> + u32 val;
> +
> + val = readl_relaxed(reg);
> + val |= bitmask;
> + writel_relaxed(val, reg);
> +}
> +
> +static inline void qphy_clrbits(u32 bitmask, void __iomem *reg)
> +{
> + u32 val;
> +
> + val = readl_relaxed(reg);
> + val &= ~bitmask;
> + writel_relaxed(val, reg);
> +}
> +
> +unsigned int msm8996_pciephy_tx_offsets[] = { 0x1000, 0x2000, 0x3000 };
> +unsigned int msm8996_pciephy_rx_offsets[] = { 0x1200, 0x2200, 0x3200 };
> +unsigned int msm8996_pciephy_pcs_offsets[] = { 0x1400, 0x2400, 0x3400 };
> +
> +unsigned int msm8996_usb3phy_tx_offsets[] = { 0x200 };
> +unsigned int msm8996_usb3phy_rx_offsets[] = { 0x400 };
> +unsigned int msm8996_usb3phy_pcs_offsets[] = { 0x600 };
> +
> +const struct qmp_phy_init_cfg pciephy_init_cfg = {
> + .type = PHY_TYPE_PCIE,
> + .nlanes = 3,
> + .tx_offsets = msm8996_pciephy_tx_offsets,
> + .rx_offsets = msm8996_pciephy_rx_offsets,
> + .pcs_offsets = msm8996_pciephy_pcs_offsets,
> +
> + .phy_init_serdes_tbl = pciephy_serdes_init_tbl,
> + .phy_init_serdes_tbl_sz = ARRAY_SIZE(pciephy_serdes_init_tbl),
> + .phy_init_tx_tbl = pciephy_tx_init_tbl,
> + .phy_init_tx_tbl_sz = ARRAY_SIZE(pciephy_tx_init_tbl),
> + .phy_init_rx_tbl = pciephy_rx_init_tbl,
> + .phy_init_rx_tbl_sz = ARRAY_SIZE(pciephy_rx_init_tbl),
> + .phy_init_pcs_tbl = pciephy_pcs_init_tbl,
> + .phy_init_pcs_tbl_sz = ARRAY_SIZE(pciephy_pcs_init_tbl),
> + .has_phy_com_ctrl = true,
> + .regs = pciephy_regs_layout,
> + .mask_start_ctrl = (PHY_PCS_START | PHY_PLL_READY_GATE_EN),
> + .mask_pwr_dn_ctrl = (PHY_SW_PWRDN | PHY_REFCLK_DRV_DSBL),
> +};
> +
> +const struct qmp_phy_init_cfg usb3phy_init_cfg = {
> + .type = PHY_TYPE_USB3,
> + .nlanes = 1,
> + .tx_offsets = msm8996_usb3phy_tx_offsets,
> + .rx_offsets = msm8996_usb3phy_rx_offsets,
> + .pcs_offsets = msm8996_usb3phy_pcs_offsets,
> +
> + .phy_init_serdes_tbl = usb3phy_serdes_init_tbl,
> + .phy_init_serdes_tbl_sz = ARRAY_SIZE(usb3phy_serdes_init_tbl),
> + .phy_init_tx_tbl = usb3phy_tx_init_tbl,
> + .phy_init_tx_tbl_sz = ARRAY_SIZE(usb3phy_tx_init_tbl),
> + .phy_init_rx_tbl = usb3phy_rx_init_tbl,
> + .phy_init_rx_tbl_sz = ARRAY_SIZE(usb3phy_rx_init_tbl),
> + .phy_init_pcs_tbl = usb3phy_pcs_init_tbl,
> + .phy_init_pcs_tbl_sz = ARRAY_SIZE(usb3phy_pcs_init_tbl),
> + .regs = usb3phy_regs_layout,
> + .mask_start_ctrl = (PHY_SERDES_START | PHY_PCS_START),
> + .mask_pwr_dn_ctrl = PHY_SW_PWRDN,
> +};
> +
> +static void qcom_qmp_phy_configure(void __iomem *base,
> + unsigned int *regs_layout,
> + struct qmp_phy_init_tbl init_tbl[],
> + int init_tbl_sz)
> +{
> + int i;
> +
> + for (i = 0; i < init_tbl_sz; i++) {
> + if (init_tbl[i].in_layout)
> + writel_relaxed(init_tbl[i].cfg_val,
> + base + regs_layout[init_tbl[i].reg_offset]);
> + else
> + writel_relaxed(init_tbl[i].cfg_val,
> + base + init_tbl[i].reg_offset);
> + }
> +
> + /* flush buffered writes */
> + mb();
> +}
> +
> +static int qcom_qmp_phy_poweron(struct phy *phy)
> +{
> + struct qmp_phy_desc *phydesc = phy_get_drvdata(phy);
> + struct qcom_qmp_phy *qphy = phydesc->qphy;
> + int ret;
> +
> + dev_info(&phy->dev, "Powering on QMP phy\n");
> +
> + ret = regulator_enable(qphy->vdda_phy);
> + if (ret) {
> + dev_err(qphy->dev, "%s: vdda-phy enable failed, err=%d\n",
> + __func__, ret);
> + return ret;
> + }
> +
> + ret = regulator_enable(qphy->vdda_pll);
> + if (ret) {
> + dev_err(qphy->dev, "%s: vdda-pll enable failed, err=%d\n",
> + __func__, ret);
> + goto err_vdda_pll;
> + }
> +
> + if (qphy->vddp_ref_clk) {
> + ret = regulator_enable(qphy->vddp_ref_clk);
> + if (ret) {
> + dev_err(qphy->dev, "%s: vdda-ref-clk enable failed, err=%d\n",
> + __func__, ret);
> + goto err_vddp_refclk;
> + }
> + }
> +
> + if (!qphy->clk_enabled) {
> + clk_prepare_enable(qphy->ref_clk_src);
> + clk_prepare_enable(qphy->ref_clk);
> + clk_prepare_enable(phydesc->pipe_clk);
> + qphy->clk_enabled = true;
> + }
> +
> + return 0;
> +
> +err_vddp_refclk:
> + regulator_disable(qphy->vdda_pll);
> +err_vdda_pll:
> + regulator_disable(qphy->vdda_phy);
> + return ret;
> +}
> +
> +static int qcom_qmp_phy_poweroff(struct phy *phy)
> +{
> + struct qmp_phy_desc *phydesc = phy_get_drvdata(phy);
> + struct qcom_qmp_phy *qphy = phydesc->qphy;
> +
> + if (qphy->clk_enabled) {
> + clk_disable_unprepare(qphy->ref_clk_src);
> + clk_disable_unprepare(qphy->ref_clk);
> + clk_disable_unprepare(phydesc->pipe_clk);
> + qphy->clk_enabled = false;
> + }
> +
> + if (qphy->vddp_ref_clk)
> + regulator_disable(qphy->vddp_ref_clk);
> +
> + regulator_disable(qphy->vdda_pll);
> + regulator_disable(qphy->vdda_phy);
> +
> + return 0;
> +}
> +
> +static int qcom_qmp_phy_is_ready(struct qcom_qmp_phy *qphy,
> + void __iomem *pcs_status, u32 mask)
> +{
> + unsigned int init_timeout;
> +
> + init_timeout = PHY_READY_TIMEOUT_COUNT;
> + do {
> + if (readl_relaxed(pcs_status) & mask)
> + break;
> +
> + usleep_range(REFCLK_STABILIZATION_DELAY_US_MIN,
> + REFCLK_STABILIZATION_DELAY_US_MAX);
> + } while (--init_timeout);
> +
> + if (!init_timeout)
> + return -EBUSY;
> +
> + return 0;
> +}
> +
> +static int qcom_qmp_phy_com_init(struct qcom_qmp_phy *qphy)
> +{
> + const struct qmp_phy_init_cfg *cfg = qphy->cfg;
> + void __iomem *serdes = qphy->serdes;
> + int ret;
> +
> + mutex_lock(&qphy->phy_mutex);
> + if (qphy->init_count++) {
> + mutex_unlock(&qphy->phy_mutex);
> + return 0;
> + }
> +
> + ret = reset_control_deassert(qphy->phy_rst);
> + if (ret) {
> + dev_err(qphy->dev, "phy reset deassert failed\n");
> + return ret;
> + }
> +
> + ret = reset_control_deassert(qphy->phycom_rst);
> + if (ret) {
> + dev_err(qphy->dev, "common reset deassert failed\n");
> + goto err_phycom_rst;
> + }
> +
> + if (qphy->phycfg_rst) {
> + ret = reset_control_deassert(qphy->phycfg_rst);
> + if (ret) {
> + dev_err(qphy->dev, "common reset deassert failed\n");
> + goto err_phycfg_rst;
> + }
> + }
> +
> + if (cfg->has_phy_com_ctrl) {
> + qphy_setbits(PHY_SW_PWRDN,
> + serdes + cfg->regs[QPHY_COM_POWER_DOWN_CONTROL]);
> + /* Make sure that above write is completed */
> + mb();
> + }
> +
> + /* Serdes configuration */
> + qcom_qmp_phy_configure(serdes, cfg->regs, cfg->phy_init_serdes_tbl,
> + cfg->phy_init_serdes_tbl_sz);
> +
> + if (cfg->has_phy_com_ctrl) {
> + qphy_clrbits(PHY_SW_RESET, serdes +
> + cfg->regs[QPHY_COM_SW_RESET]);
> + qphy_setbits(PHY_SERDES_START | PHY_PCS_START,
> + serdes + cfg->regs[QPHY_COM_START_CONTROL]);
> + /* Make sure that above write is completed */
> + mb();
> +
> + ret = qcom_qmp_phy_is_ready(qphy, serdes +
> + cfg->regs[QPHY_COM_PCS_READY_STATUS],
> + MASK_COM_PCS_READY);
> + if (ret) {
> + dev_err(qphy->dev,
> + "common control block init timed-out\n");
> + goto err_phy_comctrl;
> + }
> + }
> +
> + mutex_unlock(&qphy->phy_mutex);
> +
> + return 0;
> +
> +err_phy_comctrl:
> + if (qphy->phycfg_rst)
> + reset_control_assert(qphy->phycfg_rst);
> +err_phycfg_rst:
> + reset_control_assert(qphy->phycom_rst);
> +err_phycom_rst:
> + reset_control_assert(qphy->phy_rst);
> + return ret;
> +}
> +
> +static int qcom_qmp_phy_com_exit(struct qcom_qmp_phy *qphy)
> +{
> + const struct qmp_phy_init_cfg *cfg = qphy->cfg;
> + void __iomem *serdes = qphy->serdes;
> +
> + mutex_lock(&qphy->phy_mutex);
> + if (--qphy->init_count) {
> + mutex_unlock(&qphy->phy_mutex);
> + return 0;
> + }
> +
> + if (cfg->has_phy_com_ctrl) {
> + qphy_setbits(PHY_SERDES_START | PHY_PCS_START,
> + serdes + cfg->regs[QPHY_COM_START_CONTROL]);
> + qphy_clrbits(PHY_SW_RESET, serdes +
> + cfg->regs[QPHY_COM_SW_RESET]);
> + qphy_setbits(PHY_SW_PWRDN,
> + serdes + cfg->regs[QPHY_COM_POWER_DOWN_CONTROL]);
> +
> + /* Make sure that above writes are completed */
> + mb();
> + }
> +
> + reset_control_assert(qphy->phy_rst);
> + reset_control_assert(qphy->phycom_rst);
> + if (qphy->phycfg_rst)
> + reset_control_assert(qphy->phycfg_rst);
> +
> + mutex_unlock(&qphy->phy_mutex);
> +
> + return 0;
> +}
> +
> +/* PHY Initialization */
> +static int qcom_qmp_phy_init(struct phy *phy)
> +{
> + struct qmp_phy_desc *phydesc = phy_get_drvdata(phy);
> + struct qcom_qmp_phy *qphy = phydesc->qphy;
> + const struct qmp_phy_init_cfg *cfg = qphy->cfg;
> + void __iomem *tx = phydesc->tx;
> + void __iomem *rx = phydesc->rx;
> + void __iomem *pcs = phydesc->pcs;
> + int ret;
> +
> + dev_info(qphy->dev, "Initializing QMP phy\n");
> +
> + /* enable interface clocks to program phy */
> + clk_prepare_enable(qphy->aux_clk);
> + clk_prepare_enable(qphy->cfg_ahb_clk);
> +
> + ret = qcom_qmp_phy_com_init(qphy);
> + if (ret)
> + goto err;
> +
> + if (phydesc->lane_rst) {
> + ret = reset_control_deassert(phydesc->lane_rst);
> + if (ret) {
> + dev_err(qphy->dev, "lane<%d> reset deassert failed\n",
> + phydesc->index);
> + goto err_lane_rst;
> + }
> + }
> +
> + /* Tx, Rx, and PCS configurations */
> + qcom_qmp_phy_configure(tx, cfg->regs, cfg->phy_init_tx_tbl,
> + cfg->phy_init_tx_tbl_sz);
> + qcom_qmp_phy_configure(rx, cfg->regs, cfg->phy_init_rx_tbl,
> + cfg->phy_init_rx_tbl_sz);
> + qcom_qmp_phy_configure(pcs, cfg->regs, cfg->phy_init_pcs_tbl,
> + cfg->phy_init_pcs_tbl_sz);
> +
> + /*
> + * Pull out PHY from POWER DOWN state:
> + * This is active low enable signal to power-down PHY.
> + */
> + qphy_setbits(cfg->mask_pwr_dn_ctrl,
> + pcs + QPHY_POWER_DOWN_CONTROL);
> + /* XXX: 10 us delay; given in PCIE HPG only */
> + usleep_range(POWER_DOWN_DELAY_US_MIN, POWER_DOWN_DELAY_US_MAX);
> +
> + /* start SerDes and Phy-Coding-Sublayer */
> + qphy_setbits(cfg->mask_start_ctrl, pcs + QPHY_START_CTRL);
> +
> + /* Pull PHY out of reset state */
> + qphy_clrbits(PHY_SW_RESET, pcs + QPHY_SW_RESET);
> + /* Make sure that above writes are completed */
> + mb();
> +
> + ret = qcom_qmp_phy_is_ready(qphy, pcs +
> + cfg->regs[QPHY_PCS_READY_STATUS],
> + MASK_PHYSTATUS);
> + if (ret) {
> + dev_err(qphy->dev, "phy initialization timed-out\n");
> + goto err_pcs_ready;
> + }
> +
> + return 0;
> +
> +err_pcs_ready:
> + if (phydesc->lane_rst)
> + reset_control_assert(phydesc->lane_rst);
> +err_lane_rst:
> + qcom_qmp_phy_com_exit(qphy);
> +err:
> + clk_disable_unprepare(qphy->cfg_ahb_clk);
> + clk_disable_unprepare(qphy->aux_clk);
> + return ret;
> +}
> +
> +static int qcom_qmp_phy_exit(struct phy *phy)
> +{
> + struct qmp_phy_desc *phydesc = phy_get_drvdata(phy);
> + struct qcom_qmp_phy *qphy = phydesc->qphy;
> + const struct qmp_phy_init_cfg *cfg = qphy->cfg;
> +
> + /* PHY reset */
> + qphy_setbits(PHY_SW_RESET, phydesc->pcs + QPHY_SW_RESET);
> +
> + /* stop SerDes and Phy-Coding-Sublayer */
> + qphy_clrbits(cfg->mask_start_ctrl, phydesc->pcs + QPHY_START_CTRL);
> +
> + /* Put PHY into POWER DOWN state: active low */
> + qphy_clrbits(cfg->mask_pwr_dn_ctrl,
> + phydesc->pcs + QPHY_POWER_DOWN_CONTROL);
> +
> + /* Make sure that above writes are completed */
> + mb();
> +
> + if (phydesc->lane_rst)
> + reset_control_assert(phydesc->lane_rst);
> +
> + qcom_qmp_phy_com_exit(qphy);
> +
> + clk_disable_unprepare(qphy->aux_clk);
> + clk_disable_unprepare(qphy->cfg_ahb_clk);
> +
> + return 0;
> +}
> +
> +
> +static int qcom_qmp_phy_regulator_init(struct device *dev)
> +{
> + struct qcom_qmp_phy *qphy = dev_get_drvdata(dev);
> + int ret = 0;
> +
> + qphy->vdda_phy = devm_regulator_get(dev, "vdda-phy");
> + if (IS_ERR(qphy->vdda_phy)) {
> + ret = PTR_ERR(qphy->vdda_phy);
> + dev_err(dev, "failed to get vdda-phy, %d\n", ret);
> + return ret;
> + }
> +
> + qphy->vdda_pll = devm_regulator_get(dev, "vdda-pll");
> + if (IS_ERR(qphy->vdda_pll)) {
> + ret = PTR_ERR(qphy->vdda_pll);
> + dev_err(dev, "failed to get vdda-pll, %d\n", ret);
> + return ret;
> + }
> +
> + /* optional regulator */
> + qphy->vddp_ref_clk = devm_regulator_get(dev, "vddp-ref-clk");
> + if (IS_ERR(qphy->vddp_ref_clk)) {
> + ret = PTR_ERR(qphy->vddp_ref_clk);
> + dev_info(dev, "failed to get vddp-ref-clk, %d\n", ret);
> + qphy->vddp_ref_clk = NULL;
> + }
> +
> + return 0;
> +}
> +
> +static int qcom_qmp_phy_clk_init(struct device *dev)
> +{
> + struct qcom_qmp_phy *qphy = dev_get_drvdata(dev);
> + int ret;
> +
> + qphy->aux_clk = devm_clk_get(dev, "aux");
> + if (IS_ERR(qphy->aux_clk)) {
> + ret = PTR_ERR(qphy->aux_clk);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "failed to get aux_clk\n");
> + return ret;
> + }
> +
> + qphy->cfg_ahb_clk = devm_clk_get(dev, "cfg_ahb");
> + if (IS_ERR(qphy->cfg_ahb_clk)) {
> + ret = PTR_ERR(qphy->cfg_ahb_clk);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "failed to get cfg_ahb_clk\n");
> + return ret;
> + }
> +
> + /*
> + * ref_clk and ref_clk_src handles may not be available in
> + * all hardwares. So we don't return error in these cases.
> + */
> + qphy->ref_clk_src = devm_clk_get(dev, "ref_clk_src");
> + if (IS_ERR(qphy->ref_clk_src)) {
> + ret = PTR_ERR(qphy->ref_clk_src);
> + if (ret != -EPROBE_DEFER) {
> + qphy->ref_clk_src = NULL;
> + dev_dbg(dev, "failed to get ref_clk_src\n");
> + } else {
> + return ret;
> + }
> + }
> +
> + qphy->ref_clk = devm_clk_get(dev, "ref_clk");
> + if (IS_ERR(qphy->ref_clk)) {
> + ret = PTR_ERR(qphy->ref_clk);
> + if (ret != -EPROBE_DEFER) {
> + qphy->ref_clk = NULL;
> + dev_dbg(dev, "failed to get ref_clk\n");
> + } else {
> + return ret;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static struct phy *qcom_qmp_phy_xlate(struct device *dev,
> + struct of_phandle_args *args)
> +{
> + struct qcom_qmp_phy *qphy = dev_get_drvdata(dev);
> + int i;
> +
> + if (WARN_ON(args->args[0] >= qphy->cfg->nlanes))
> + return ERR_PTR(-ENODEV);
> +
> + for (i = 0; i < qphy->cfg->nlanes; i++) {
> + if (qphy->phys[i]->index == args->args[0])
> + break;
> + }
> +
> + if (i == qphy->cfg->nlanes)
> + return ERR_PTR(-ENODEV);
> +
> + return qphy->phys[i]->phy;
> +}
> +
> +static const struct phy_ops qcom_qmp_phy_gen_ops = {
> + .init = qcom_qmp_phy_init,
> + .exit = qcom_qmp_phy_exit,
> + .power_on = qcom_qmp_phy_poweron,
> + .power_off = qcom_qmp_phy_poweroff,
> + .owner = THIS_MODULE,
> +};
> +
> +static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
> + {
> + .compatible = "qcom,msm8996-qmp-pcie-phy",
> + .data = &pciephy_init_cfg,
> + }, {
> + .compatible = "qcom,msm8996-qmp-usb3-phy",
> + .data = &usb3phy_init_cfg,
> + },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, qcom_qmp_phy_of_match_table);
> +
> +static int qcom_qmp_phy_probe(struct platform_device *pdev)
> +{
> + struct qcom_qmp_phy *qphy;
> + struct device *dev = &pdev->dev;
> + struct device_node *child;
> + struct phy_provider *phy_provider;
> + struct resource *res;
> + const struct of_device_id *match;
> + void __iomem *base;
> + int ret = 0;
> + int id;
> +
> + qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
> + if (!qphy)
> + return -ENOMEM;
> + qphy->dev = dev;
> + dev_set_drvdata(dev, qphy);
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res)
> + return -ENODEV;
> + base = devm_ioremap_resource(dev, res);
> + if (IS_ERR(base))
> + return PTR_ERR(base);
> +
> + /* per PHY serdes; usually located at base address */
> + qphy->serdes = base;
> +
> + mutex_init(&qphy->phy_mutex);
> +
> + /* Get the specific init parameters of QMP phy */
> + match = of_match_node(qcom_qmp_phy_of_match_table, dev->of_node);
> + qphy->cfg = match->data;
> +
> + ret = qcom_qmp_phy_clk_init(dev);
> + if (ret) {
> + dev_err(dev, "clock init failed\n");
> + return ret;
> + }
> +
> + ret = qcom_qmp_phy_regulator_init(dev);
> + if (ret) {
> + dev_err(dev, "regulator init failed\n");
> + return ret;
> + }
> +
> + qphy->phy_rst = devm_reset_control_get(dev, "phy");
> + if (IS_ERR(qphy->phy_rst)) {
> + dev_err(dev, "failed to get phy core reset\n");
> + return PTR_ERR(qphy->phy_rst);
> + }
> +
> + qphy->phycom_rst = devm_reset_control_get(dev, "common");
> + if (IS_ERR(qphy->phycom_rst)) {
> + dev_err(dev, "failed to get phy common reset\n");
> + return PTR_ERR(qphy->phycom_rst);
> + }
> +
> + qphy->phycfg_rst = devm_reset_control_get(dev, "cfg");
> + if (IS_ERR(qphy->phycfg_rst)) {
> + dev_err(dev, "failed to get phy ahb cfg reset\n");
> + qphy->phycfg_rst = NULL;
> + }
> +
> + qphy->phys = devm_kcalloc(dev, qphy->cfg->nlanes,
> + sizeof(*qphy->phys), GFP_KERNEL);
> + if (!qphy->phys)
> + return -ENOMEM;
> +
> + for (id = 0; id < qphy->cfg->nlanes; id++) {
> + struct phy *generic_phy;
> + struct qmp_phy_desc *phy_desc;
> + char prop_name[MAX_PROP_NAME];
> +
> + phy_desc = devm_kzalloc(dev, sizeof(*phy_desc), GFP_KERNEL);
> + if (!phy_desc) {
> + ret = -ENOMEM;
> + goto put_child;
> + }
> +
> + phy_desc->tx = base + qphy->cfg->tx_offsets[id];
> + phy_desc->rx = base + qphy->cfg->rx_offsets[id];
> + phy_desc->pcs = base + qphy->cfg->pcs_offsets[id];
> +
> + /*
> + * Get PHY's Pipe clock, if any; USB3 and PCIe are PIPE
> + * based phys, so they essentially have pipe clock
> + */
> + memset(&prop_name, 0, sizeof(prop_name));
> + snprintf(prop_name, MAX_PROP_NAME, "pipe%d", id);
> + phy_desc->pipe_clk = devm_clk_get(dev, prop_name);
> + if (IS_ERR(phy_desc->pipe_clk)) {
> + if (qphy->cfg->type == PHY_TYPE_PCIE ||
> + qphy->cfg->type == PHY_TYPE_USB3) {
> + ret = PTR_ERR(phy_desc->pipe_clk);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev,
> + "failed to get lane%d pipe_clk\n", id);
> + return ret;
> + } else {
> + phy_desc->pipe_clk = NULL;
> + }
> + }
> +
> + /* Get lane reset, if any */
> + memset(&prop_name, 0, sizeof(prop_name));
> + snprintf(prop_name, MAX_PROP_NAME, "lane%d", id);
> + phy_desc->lane_rst = devm_reset_control_get(dev, prop_name);
> + if (IS_ERR(phy_desc->lane_rst)) {
> + if (qphy->cfg->type == PHY_TYPE_PCIE) {
> + dev_err(dev, "failed to get lane%d reset\n",
> + id);
> + ret = PTR_ERR(phy_desc->lane_rst);
> + goto put_child;
> + } else {
> + phy_desc->lane_rst = NULL;
> + }
> + }
> +
> + generic_phy = devm_phy_create(dev, NULL, &qcom_qmp_phy_gen_ops);
> + if (IS_ERR(generic_phy)) {
> + ret = PTR_ERR(generic_phy);
> + dev_err(dev, "failed to create qphy %d\n", ret);
> + goto put_child;
> + }
> +
> + phy_desc->phy = generic_phy;
> + phy_desc->index = id;
> + phy_desc->qphy = qphy;
> + phy_set_drvdata(generic_phy, phy_desc);
> + qphy->phys[id] = phy_desc;
> + }
> +
> + phy_provider = devm_of_phy_provider_register(dev, qcom_qmp_phy_xlate);
> + if (IS_ERR(phy_provider)) {
> + ret = PTR_ERR(phy_provider);
> + dev_err(dev, "failed to register qphy %d\n", ret);
> + goto put_child;
> + }
> +
> +put_child:
> + of_node_put(child);
> + return ret;
> +}
> +
> +static struct platform_driver qcom_qmp_phy_driver = {
> + .probe = qcom_qmp_phy_probe,
> + .driver = {
> + .name = "qcom_qmp_phy",
> + .of_match_table = of_match_ptr(qcom_qmp_phy_of_match_table),
> + },
> +};
> +
> +module_platform_driver(qcom_qmp_phy_driver);
> +
> +MODULE_AUTHOR("Vivek Gautam <vivek.gautam@...eaurora.org>");
> +MODULE_DESCRIPTION("Qualcomm QMP PHY driver");
> +MODULE_LICENSE("GPL v2");
--
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