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Message-ID: <3df50130-6a42-e4a7-8359-37cb0c807a0b@codeaurora.org>
Date: Wed, 21 Mar 2018 09:04:24 +0530
From: Manu Gautam <mgautam@...eaurora.org>
To: cang@...eaurora.org, subhashj@...eaurora.org,
asutoshd@...eaurora.org, vivek.gautam@...eaurora.org,
kishon@...com, robh+dt@...nel.org, mark.rutland@....com
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v1 1/2] phy: Add QMP phy based UFS phy support for sdm845
Hi Can,
On 3/21/2018 8:12 AM, cang@...eaurora.org wrote:
> On 2018-03-20 19:30, Can Guo wrote:
>> Add UFS PHY support to make SDM845 UFS work with common PHY framework.
>>
>> Signed-off-by: Can Guo <cang@...eaurora.org>
>> ---
>> drivers/phy/qualcomm/phy-qcom-qmp.c | 120 +++++++++++++++++++++++++++++++++++-
>> drivers/phy/qualcomm/phy-qcom-qmp.h | 8 +++
>> 2 files changed, 126 insertions(+), 2 deletions(-)
>>
[snip]
>> + /* true, if PCS block has a separate SW_RESET register */
>> + bool has_sw_rst;
>> };
>>
You should set this for qmp_v3_usb3_uniphy_cfg as well.
Please also mention dependency on my patches [1] and [2] in your cover letter
[1] http://lists-archives.com/linux-kernel/29071659-dt-bindings-phy-qcom-qmp-update-bindings-for-sdm845.html
[2] lists-archives.com/linux-kernel/29071660-phy-qcom-qmp-add-qmp-v3-usb3-uni-phy-support-for-sdm845.html
>> /**
>> @@ -636,6 +712,10 @@ static inline void qphy_clrbits(void __iomem
>> *base, u32 offset, u32 val)
>> "aux", "cfg_ahb", "ref", "com_aux",
>> };
>>
>> +static const char * const sdm845_ufs_phy_clk_l[] = {
>> + "ref_clk", "ref_aux_clk",
>> +};
>> +
>> /* list of resets */
>> static const char * const msm8996_pciephy_reset_l[] = {
>> "phy", "common", "cfg",
>> @@ -650,6 +730,10 @@ static inline void qphy_clrbits(void __iomem
>> *base, u32 offset, u32 val)
>> "vdda-phy", "vdda-pll",
>> };
>>
>> +static const char * const sdm845_phy_vreg_l[] = {
>> + "vdda-phy", "vdda-pll",
>> +};
>> +
>> static const struct qmp_phy_cfg msm8996_pciephy_cfg = {
>> .type = PHY_TYPE_PCIE,
>> .nlanes = 3,
>> @@ -679,6 +763,7 @@ static inline void qphy_clrbits(void __iomem
>> *base, u32 offset, u32 val)
>> .has_pwrdn_delay = true,
>> .pwrdn_delay_min = POWER_DOWN_DELAY_US_MIN,
>> .pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX,
>> + .has_sw_rst = true,
>> };
>>
>> static const struct qmp_phy_cfg msm8996_usb3phy_cfg = {
>> @@ -704,6 +789,7 @@ static inline void qphy_clrbits(void __iomem
>> *base, u32 offset, u32 val)
>> .start_ctrl = SERDES_START | PCS_START,
>> .pwrdn_ctrl = SW_PWRDN,
>> .mask_pcs_ready = PHYSTATUS,
>> + .has_sw_rst = true,
>> };
>>
>> /* list of resets */
>> @@ -740,6 +826,7 @@ static inline void qphy_clrbits(void __iomem
>> *base, u32 offset, u32 val)
>> .has_pwrdn_delay = true,
>> .pwrdn_delay_min = 995, /* us */
>> .pwrdn_delay_max = 1005, /* us */
>> + .has_sw_rst = true,
>> };
>>
>> static const struct qmp_phy_cfg qmp_v3_usb3phy_cfg = {
>> @@ -772,6 +859,30 @@ static inline void qphy_clrbits(void __iomem
>> *base, u32 offset, u32 val)
>> .has_phy_dp_com_ctrl = true,
>> .tx_b_lane_offset = 0x400,
>> .rx_b_lane_offset = 0x400,
>> + .has_sw_rst = true,
>> +};
>> +
>> +static const struct qmp_phy_cfg sdm845_ufsphy_cfg = {
>> + .type = PHY_TYPE_UFS,
>> + .nlanes = 2,
>> +
>> + .serdes_tbl = sdm845_ufsphy_serdes_tbl,
>> + .serdes_tbl_num = ARRAY_SIZE(sdm845_ufsphy_serdes_tbl),
>> + .tx_tbl = sdm845_ufsphy_tx_tbl,
>> + .tx_tbl_num = ARRAY_SIZE(sdm845_ufsphy_tx_tbl),
>> + .rx_tbl = sdm845_ufsphy_rx_tbl,
>> + .rx_tbl_num = ARRAY_SIZE(sdm845_ufsphy_rx_tbl),
>> + .pcs_tbl = sdm845_ufsphy_pcs_tbl,
>> + .pcs_tbl_num = ARRAY_SIZE(sdm845_ufsphy_pcs_tbl),
>> + .clk_list = sdm845_ufs_phy_clk_l,
>> + .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>> + .vreg_list = sdm845_phy_vreg_l,
>> + .num_vregs = ARRAY_SIZE(sdm845_phy_vreg_l),
>> + .regs = sdm845_ufsphy_regs_layout,
>> +
>> + .start_ctrl = SERDES_START,
>> + .pwrdn_ctrl = SW_PWRDN,
>> + .mask_pcs_ready = PCS_READY,
>> };
>>
>> static void qcom_qmp_phy_configure(void __iomem *base,
>> @@ -998,7 +1109,8 @@ static int qcom_qmp_phy_init(struct phy *phy)
>> usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max);
>>
>> /* Pull PHY out of reset state */
>> - qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
>> + if (cfg->has_sw_rst)
>> + qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
>> if (cfg->has_phy_dp_com_ctrl)
>> qphy_clrbits(dp_com, QPHY_V3_DP_COM_SW_RESET, SW_RESET);
>>
>> @@ -1036,7 +1148,8 @@ static int qcom_qmp_phy_exit(struct phy *phy)
>> clk_disable_unprepare(qphy->pipe_clk);
>>
>> /* PHY reset */
>> - qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
>> + if (cfg->has_sw_rst)
>> + qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
>>
>> /* stop SerDes and Phy-Coding-Sublayer */
>> qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl);
>> @@ -1383,6 +1496,9 @@ int qcom_qmp_phy_create(struct device *dev,
>> struct device_node *np, int id)
>> }, {
>> .compatible = "qcom,qmp-v3-usb3-phy",
>> .data = &qmp_v3_usb3phy_cfg,
>> + }, {
>> + .compatible = "qcom,sdm845-qmp-ufs-phy",
>> + .data = &sdm845_ufsphy_cfg,
>> },
>> { },
>> };
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h
>> b/drivers/phy/qualcomm/phy-qcom-qmp.h
>> index d1c6905..ea4b4dc 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp.h
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h
>> @@ -184,6 +184,8 @@
>> #define QSERDES_V3_COM_VCO_TUNE2_MODE0 0x0f8
>> #define QSERDES_V3_COM_VCO_TUNE1_MODE1 0x0fc
>> #define QSERDES_V3_COM_VCO_TUNE2_MODE1 0x100
>> +#define QSERDES_V3_COM_VCO_TUNE_INITVAL1 0x104
>> +#define QSERDES_V3_COM_VCO_TUNE_INITVAL2 0x108
>> #define QSERDES_V3_COM_VCO_TUNE_TIMER1 0x11c
>> #define QSERDES_V3_COM_VCO_TUNE_TIMER2 0x120
>> #define QSERDES_V3_COM_CLK_SELECT 0x138
>> @@ -211,8 +213,13 @@
>> /* Only for QMP V3 PHY - RX registers */
>> #define QSERDES_V3_RX_UCDR_SO_GAIN_HALF 0x00c
>> #define QSERDES_V3_RX_UCDR_SO_GAIN 0x014
>> +#define QSERDES_V3_RX_UCDR_SVS_SO_GAIN_HALF 0x024
>> +#define QSERDES_V3_RX_UCDR_SVS_SO_GAIN_QUARTER 0x028
>> +#define QSERDES_V3_RX_UCDR_SVS_SO_GAIN 0x02c
>> #define QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN 0x030
>> #define QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE 0x034
>> +#define QSERDES_V3_RX_UCDR_FASTLOCK_COUNT_LOW 0x03c
>> +#define QSERDES_V3_RX_UCDR_PI_CONTROLS 0x044
>> #define QSERDES_V3_RX_RX_TERM_BW 0x07c
>> #define QSERDES_V3_RX_RX_EQ_GAIN2_LSB 0x0c8
>> #define QSERDES_V3_RX_RX_EQ_GAIN2_MSB 0x0cc
>> @@ -272,6 +279,7 @@
>> #define QPHY_V3_PCS_FLL_CNT_VAL_L 0x0cc
>> #define QPHY_V3_PCS_FLL_CNT_VAL_H_TOL 0x0d0
>> #define QPHY_V3_PCS_FLL_MAN_CODE 0x0d4
>> +#define QPHY_V3_PCS_MULTI_LANE_CTRL1 0x1c4
>> #define QPHY_V3_PCS_RX_SIGDET_LVL 0x1d8
>>
>> /* Only for QMP V3 PHY - PCS_MISC registers */
--
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