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Message-ID: <367744ed-a7e4-485b-b855-2cb26ef1ee16@quicinc.com>
Date: Thu, 30 Nov 2023 16:14:25 +0800
From: Can Guo <quic_cang@...cinc.com>
To: Manivannan Sadhasivam <mani@...nel.org>
CC: <bvanassche@....org>, <adrian.hunter@...el.com>,
<cmd4@...lcomm.com>, <beanhuo@...ron.com>, <avri.altman@....com>,
<junwoo80.lee@...sung.com>, <martin.petersen@...cle.com>,
<linux-scsi@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
"open list:GENERIC PHY FRAMEWORK" <linux-phy@...ts.infradead.org>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 08/10] phy: qualcomm: phy-qcom-qmp-ufs: Add High Speed
Gear 5 support for SM8550
On 11/30/2023 3:12 PM, Manivannan Sadhasivam wrote:
> On Wed, Nov 29, 2023 at 12:28:33AM -0800, Can Guo wrote:
>> On SM8550, two sets of UFS PHY settings are provided, one set is to support
>> HS-G5, another set is to support HS-G4 and lower gears. The two sets of PHY
>> settings are programming different values to different registers, mixing
>> the two sets and/or overwriting one set with another set is definitely not
>> blessed by UFS PHY designers.
>>
>> To add HS-G5 support for SM8550, split the two sets of PHY settings into
>> their dedicated overlay tables, only the common parts of the two sets of
>> PHY settings are left in the .tbls.
>>
>> Consider we are going to add even higher gear support in future, to avoid
>> adding more tables with different names, rename the .tbls_hs_g4 and make it
>> an array, a size of 2 is enough as of now.
>>
>> In this case, .tbls alone is not a complete set of PHY settings, so either
>> tbls_hs_overlay[0] or tbls_hs_overlay[1] must be applied on top of the
>> .tbls to become a complete set of PHY settings.
>>
>> Signed-off-by: Can Guo <quic_cang@...cinc.com>
>> ---
>> drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h | 2 +
>> drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h | 2 +
>> .../qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h | 9 ++
>> drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 170 ++++++++++++++++++---
>> 4 files changed, 163 insertions(+), 20 deletions(-)
>>
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h
>> index c23d5e4..e563af5 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h
>> @@ -18,6 +18,7 @@
>> #define QPHY_V6_PCS_UFS_BIST_FIXED_PAT_CTRL 0x060
>> #define QPHY_V6_PCS_UFS_TX_HSGEAR_CAPABILITY 0x074
>> #define QPHY_V6_PCS_UFS_RX_HSGEAR_CAPABILITY 0x0bc
>> +#define QPHY_V6_PCS_UFS_RX_HS_G5_SYNC_LENGTH_CAPABILITY 0x12c
>> #define QPHY_V6_PCS_UFS_DEBUG_BUS_CLKSEL 0x158
>> #define QPHY_V6_PCS_UFS_LINECFG_DISABLE 0x17c
>> #define QPHY_V6_PCS_UFS_RX_MIN_HIBERN8_TIME 0x184
>> @@ -27,5 +28,6 @@
>> #define QPHY_V6_PCS_UFS_READY_STATUS 0x1a8
>> #define QPHY_V6_PCS_UFS_TX_MID_TERM_CTRL1 0x1f4
>> #define QPHY_V6_PCS_UFS_MULTI_LANE_CTRL1 0x1fc
>> +#define QPHY_V6_PCS_UFS_RX_HSG5_SYNC_WAIT_TIME 0x220
>>
>> #endif
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h
>> index f420f8f..ef392ce 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h
>> @@ -56,6 +56,8 @@
>> #define QSERDES_V6_COM_SYS_CLK_CTRL 0xe4
>> #define QSERDES_V6_COM_SYSCLK_BUF_ENABLE 0xe8
>> #define QSERDES_V6_COM_PLL_IVCO 0xf4
>> +#define QSERDES_V6_COM_CMN_IETRIM 0xfc
>> +#define QSERDES_V6_COM_CMN_IPTRIM 0x100
>> #define QSERDES_V6_COM_SYSCLK_EN_SEL 0x110
>> #define QSERDES_V6_COM_RESETSM_CNTRL 0x118
>> #define QSERDES_V6_COM_LOCK_CMP_EN 0x120
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h
>> index 674f158..48f31c8 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h
>> @@ -15,8 +15,15 @@
>>
>> #define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE2 0x08
>> #define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE4 0x10
>> +#define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_SO_GAIN_RATE4 0x24
>> +#define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_COUNT_HIGH_RATE4 0x54
>> #define QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE2 0xd4
>> +#define QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE4 0xdc
>> +#define QSERDES_UFS_V6_RX_UCDR_SO_GAIN_RATE4 0xf0
>> +#define QSERDES_UFS_V6_RX_UCDR_PI_CONTROLS 0xf4
>> #define QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL 0x178
>> +#define QSERDES_UFS_V6_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x1bc
>> +#define QSERDES_UFS_V6_RX_OFFSET_ADAPTOR_CNTRL3 0x1c4
>> #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B0 0x208
>> #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B1 0x20c
>> #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B3 0x214
>> @@ -28,6 +35,8 @@
>> #define QSERDES_UFS_V6_RX_MODE_RATE3_B5 0x264
>> #define QSERDES_UFS_V6_RX_MODE_RATE3_B8 0x270
>> #define QSERDES_UFS_V6_RX_MODE_RATE4_B3 0x280
>> +#define QSERDES_UFS_V6_RX_MODE_RATE4_B4 0x284
>> #define QSERDES_UFS_V6_RX_MODE_RATE4_B6 0x28c
>> +#define QSERDES_UFS_V6_RX_DLL0_FTUNE_CTRL 0x2f8
>>
>> #endif
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> index 2173418..7e5f1154 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> @@ -41,6 +41,8 @@
>>
>> #define PHY_INIT_COMPLETE_TIMEOUT 10000
>>
>> +#define NUM_OVERLAY 2
>> +
>> struct qmp_phy_init_tbl {
>> unsigned int offset;
>> unsigned int val;
>> @@ -754,15 +756,22 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_serdes[] = {
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_HSCLK_SEL_1, 0x11),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_HSCLK_HS_SWITCH_SEL_1, 0x00),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP_EN, 0x01),
>> - QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x04),
>> - QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_IVCO, 0x0f),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_INITVAL2, 0x00),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_DEC_START_MODE0, 0x41),
>> - QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE0, 0x0a),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_RCTRL_MODE0, 0x18),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_CCTRL_MODE0, 0x14),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP1_MODE0, 0x7f),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE0, 0x06),
>> +};
>> +
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_hs_b_serdes[] = {
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x44),
>> +};
>> +
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_serdes[] = {
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x04),
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_IVCO, 0x0f),
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE0, 0x0a),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_DEC_START_MODE1, 0x4c),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE1, 0x0a),
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_RCTRL_MODE1, 0x18),
>> @@ -771,19 +780,24 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_serdes[] = {
>> QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE1, 0x07),
>> };
>>
>> -static const struct qmp_phy_init_tbl sm8550_ufsphy_hs_b_serdes[] = {
>> - QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x44),
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g5_serdes[] = {
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_IVCO, 0x1f),
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_CMN_IETRIM, 0x1b),
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_CMN_IPTRIM, 0x1c),
>> + QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE0, 0x06),
>> };
>>
>> static const struct qmp_phy_init_tbl sm8550_ufsphy_tx[] = {
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_TX_LANE_MODE_1, 0x05),
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_TX_RES_CODE_LANE_OFFSET_TX, 0x07),
>> +};
>> +
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_tx[] = {
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_TX_FR_DCC_CTRL, 0x4c),
>> };
>>
>> static const struct qmp_phy_init_tbl sm8550_ufsphy_rx[] = {
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE2, 0x0c),
>> - QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x0e),
>>
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE_0_1_B0, 0xc2),
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE_0_1_B1, 0xc2),
>> @@ -799,16 +813,45 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_rx[] = {
>> QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE3_B8, 0x02),
>> };
>>
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_rx[] = {
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x0e),
>> +};
>> +
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g5_rx[] = {
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE4, 0x0c),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_SO_GAIN_RATE4, 0x04),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x14),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_PI_CONTROLS, 0x07),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_OFFSET_ADAPTOR_CNTRL3, 0x0e),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_COUNT_HIGH_RATE4, 0x02),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE4, 0x1c),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_SO_GAIN_RATE4, 0x06),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x08),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE4_B3, 0xb9),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE4_B4, 0x4f),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE4_B6, 0xff),
>> + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_DLL0_FTUNE_CTRL, 0x30),
>> +};
>> +
>> static const struct qmp_phy_init_tbl sm8550_ufsphy_pcs[] = {
>> QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_SIGDET_CTRL2, 0x69),
>> QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_LARGE_AMP_DRV_LVL, 0x0f),
>> QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_MID_TERM_CTRL1, 0x43),
>> - QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_PLL_CNTL, 0x2b),
>> QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_MULTI_LANE_CTRL1, 0x02),
>> +};
>> +
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_pcs[] = {
>> + QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_PLL_CNTL, 0x2b),
>> QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_HSGEAR_CAPABILITY, 0x04),
>> QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HSGEAR_CAPABILITY, 0x04),
>> };
>>
>> +static const struct qmp_phy_init_tbl sm8550_ufsphy_g5_pcs[] = {
>> + QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_PLL_CNTL, 0x33),
>> + QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HS_G5_SYNC_LENGTH_CAPABILITY, 0x4f),
>> + QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HSG5_SYNC_WAIT_TIME, 0x9e),
>> +};
>> +
>> struct qmp_ufs_offsets {
>> u16 serdes;
>> u16 pcs;
>> @@ -828,6 +871,8 @@ struct qmp_phy_cfg_tbls {
>> int rx_num;
>> const struct qmp_phy_init_tbl *pcs;
>> int pcs_num;
>> + /* Maximum supported Gear of this tbls */
>> + u32 max_gear;
>> };
>>
>> /* struct qmp_phy_cfg - per-PHY initialization config */
>> @@ -835,13 +880,15 @@ struct qmp_phy_cfg {
>> int lanes;
>>
>> const struct qmp_ufs_offsets *offsets;
>> + /* Maximum supported Gear of this config */
>> + u32 max_supported_gear;
>>
>> /* Main init sequence for PHY blocks - serdes, tx, rx, pcs */
>> const struct qmp_phy_cfg_tbls tbls;
>> /* Additional sequence for HS Series B */
>> const struct qmp_phy_cfg_tbls tbls_hs_b;
>> - /* Additional sequence for HS G4 */
>> - const struct qmp_phy_cfg_tbls tbls_hs_g4;
>> + /* Additional sequence for different HS Gears */
>> + const struct qmp_phy_cfg_tbls tbls_hs_overlay[NUM_OVERLAY];
>>
>> /* clock ids to be requested */
>> const char * const *clk_list;
>> @@ -944,6 +991,7 @@ static const struct qmp_phy_cfg msm8996_ufsphy_cfg = {
>> .lanes = 1,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G3,
>>
>> .tbls = {
>> .serdes = msm8996_ufsphy_serdes,
>> @@ -969,6 +1017,7 @@ static const struct qmp_phy_cfg sa8775p_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8350_ufsphy_serdes,
>> @@ -984,13 +1033,14 @@ static const struct qmp_phy_cfg sa8775p_ufsphy_cfg = {
>> .serdes = sm8350_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8350_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8350_ufsphy_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8350_ufsphy_g4_tx),
>> .rx = sm8350_ufsphy_g4_rx,
>> .rx_num = ARRAY_SIZE(sm8350_ufsphy_g4_rx),
>> .pcs = sm8350_ufsphy_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sm8450_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sm8450_ufs_phy_clk_l),
>> @@ -1003,6 +1053,7 @@ static const struct qmp_phy_cfg sc7280_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8150_ufsphy_serdes,
>> @@ -1018,13 +1069,14 @@ static const struct qmp_phy_cfg sc7280_ufsphy_cfg = {
>> .serdes = sm8150_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8150_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8250_ufsphy_hs_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8250_ufsphy_hs_g4_tx),
>> .rx = sc7280_ufsphy_hs_g4_rx,
>> .rx_num = ARRAY_SIZE(sc7280_ufsphy_hs_g4_rx),
>> .pcs = sm8150_ufsphy_hs_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8150_ufsphy_hs_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sm8450_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sm8450_ufs_phy_clk_l),
>> @@ -1037,6 +1089,7 @@ static const struct qmp_phy_cfg sc8280xp_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8350_ufsphy_serdes,
>> @@ -1052,13 +1105,14 @@ static const struct qmp_phy_cfg sc8280xp_ufsphy_cfg = {
>> .serdes = sm8350_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8350_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8350_ufsphy_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8350_ufsphy_g4_tx),
>> .rx = sm8350_ufsphy_g4_rx,
>> .rx_num = ARRAY_SIZE(sm8350_ufsphy_g4_rx),
>> .pcs = sm8350_ufsphy_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sdm845_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>> @@ -1071,6 +1125,7 @@ static const struct qmp_phy_cfg sdm845_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G3,
>>
>> .tbls = {
>> .serdes = sdm845_ufsphy_serdes,
>> @@ -1099,6 +1154,7 @@ static const struct qmp_phy_cfg sm6115_ufsphy_cfg = {
>> .lanes = 1,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G3,
>>
>> .tbls = {
>> .serdes = sm6115_ufsphy_serdes,
>> @@ -1127,6 +1183,7 @@ static const struct qmp_phy_cfg sm7150_ufsphy_cfg = {
>> .lanes = 1,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G3,
>>
>> .tbls = {
>> .serdes = sdm845_ufsphy_serdes,
>> @@ -1155,6 +1212,7 @@ static const struct qmp_phy_cfg sm8150_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8150_ufsphy_serdes,
>> @@ -1170,13 +1228,14 @@ static const struct qmp_phy_cfg sm8150_ufsphy_cfg = {
>> .serdes = sm8150_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8150_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8150_ufsphy_hs_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8150_ufsphy_hs_g4_tx),
>> .rx = sm8150_ufsphy_hs_g4_rx,
>> .rx_num = ARRAY_SIZE(sm8150_ufsphy_hs_g4_rx),
>> .pcs = sm8150_ufsphy_hs_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8150_ufsphy_hs_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sdm845_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>> @@ -1189,6 +1248,7 @@ static const struct qmp_phy_cfg sm8250_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8150_ufsphy_serdes,
>> @@ -1204,13 +1264,14 @@ static const struct qmp_phy_cfg sm8250_ufsphy_cfg = {
>> .serdes = sm8150_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8150_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8250_ufsphy_hs_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8250_ufsphy_hs_g4_tx),
>> .rx = sm8250_ufsphy_hs_g4_rx,
>> .rx_num = ARRAY_SIZE(sm8250_ufsphy_hs_g4_rx),
>> .pcs = sm8150_ufsphy_hs_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8150_ufsphy_hs_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sdm845_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>> @@ -1223,6 +1284,7 @@ static const struct qmp_phy_cfg sm8350_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8350_ufsphy_serdes,
>> @@ -1238,13 +1300,14 @@ static const struct qmp_phy_cfg sm8350_ufsphy_cfg = {
>> .serdes = sm8350_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8350_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8350_ufsphy_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8350_ufsphy_g4_tx),
>> .rx = sm8350_ufsphy_g4_rx,
>> .rx_num = ARRAY_SIZE(sm8350_ufsphy_g4_rx),
>> .pcs = sm8350_ufsphy_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sdm845_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>> @@ -1257,6 +1320,7 @@ static const struct qmp_phy_cfg sm8450_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets,
>> + .max_supported_gear = UFS_HS_G4,
>>
>> .tbls = {
>> .serdes = sm8350_ufsphy_serdes,
>> @@ -1272,13 +1336,14 @@ static const struct qmp_phy_cfg sm8450_ufsphy_cfg = {
>> .serdes = sm8350_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8350_ufsphy_hs_b_serdes),
>> },
>> - .tbls_hs_g4 = {
>> + .tbls_hs_overlay[0] = {
>> .tx = sm8350_ufsphy_g4_tx,
>> .tx_num = ARRAY_SIZE(sm8350_ufsphy_g4_tx),
>> .rx = sm8350_ufsphy_g4_rx,
>> .rx_num = ARRAY_SIZE(sm8350_ufsphy_g4_rx),
>> .pcs = sm8350_ufsphy_g4_pcs,
>> .pcs_num = ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> },
>> .clk_list = sm8450_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sm8450_ufs_phy_clk_l),
>> @@ -1291,6 +1356,7 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
>> .lanes = 2,
>>
>> .offsets = &qmp_ufs_offsets_v6,
>> + .max_supported_gear = UFS_HS_G5,
>>
>> .tbls = {
>> .serdes = sm8550_ufsphy_serdes,
>> @@ -1306,6 +1372,26 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
>> .serdes = sm8550_ufsphy_hs_b_serdes,
>> .serdes_num = ARRAY_SIZE(sm8550_ufsphy_hs_b_serdes),
>> },
>> + .tbls_hs_overlay[0] = {
>> + .serdes = sm8550_ufsphy_g4_serdes,
>> + .serdes_num = ARRAY_SIZE(sm8550_ufsphy_g4_serdes),
>> + .tx = sm8550_ufsphy_g4_tx,
>> + .tx_num = ARRAY_SIZE(sm8550_ufsphy_g4_tx),
>> + .rx = sm8550_ufsphy_g4_rx,
>> + .rx_num = ARRAY_SIZE(sm8550_ufsphy_g4_rx),
>> + .pcs = sm8550_ufsphy_g4_pcs,
>> + .pcs_num = ARRAY_SIZE(sm8550_ufsphy_g4_pcs),
>> + .max_gear = UFS_HS_G4,
>> + },
>> + .tbls_hs_overlay[1] = {
>> + .serdes = sm8550_ufsphy_g5_serdes,
>> + .serdes_num = ARRAY_SIZE(sm8550_ufsphy_g5_serdes),
>> + .rx = sm8550_ufsphy_g5_rx,
>> + .rx_num = ARRAY_SIZE(sm8550_ufsphy_g5_rx),
>> + .pcs = sm8550_ufsphy_g5_pcs,
>> + .pcs_num = ARRAY_SIZE(sm8550_ufsphy_g5_pcs),
>> + .max_gear = UFS_HS_G5,
>> + },
>> .clk_list = sdm845_ufs_phy_clk_l,
>> .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>> .vreg_list = qmp_phy_vreg_l,
>> @@ -1368,17 +1454,55 @@ static void qmp_ufs_pcs_init(struct qmp_ufs *qmp, const struct qmp_phy_cfg_tbls
>> qmp_ufs_configure(pcs, tbls->pcs, tbls->pcs_num);
>> }
>>
>> +static int qmp_ufs_get_gear_overlay(struct qmp_ufs *qmp, const struct qmp_phy_cfg *cfg)
>> +{
>> + u32 max_gear, floor_max_gear = cfg->max_supported_gear;
>> + int i = NUM_OVERLAY - 1;
>
> Just use i directly in the for loop. Also, please rename "i" with "idx" to make
> it clear.
OK
>
>> + int ret = -EINVAL;
>> +
>> + for (; i >= 0; i --) {
>
> i--
>
>> + max_gear = cfg->tbls_hs_overlay[i].max_gear;
>> +
>> + if (max_gear == 0)
>> + continue;
>
> You are setting max_gear even for targets with a single overlay. How can this
> become 0?
Say 8550 has two overlays, 8450 has one overlay. We are sweeping all
overlays as NUM_OVERLAY == 2, so for 8450, there is one overlay
initialized, another one not initialized (max_gear == 0), we are
skipping the one which is not initialized.
>
>> +
>> + /* Direct matching, bail */
>> + if (qmp->submode == max_gear)
>> + return i;
>> +
>> + /* If no direct matching, the lowest gear is the best matching */
>> + if (max_gear < floor_max_gear) {
>> + ret = i;
>> + floor_max_gear = max_gear;
>> + }
>> + }
>> +
>> + return ret;
>> +}
>> +
>> static void qmp_ufs_init_registers(struct qmp_ufs *qmp, const struct qmp_phy_cfg *cfg)
>> {
>> + int i;
>> + bool apply_overlay = false;
>> +
>> + i = qmp_ufs_get_gear_overlay(qmp, cfg);
>> + if (i >= 0)
>> + apply_overlay = true;
>
> How about?
>
> ```
> int idx;
>
> idx = qmp_ufs_get_gear_overlay(qmp, cfg);
>
> qmp_ufs_serdes_init(qmp, &cfg->tbls);
> qmp_ufs_lanes_init(qmp, &cfg->tbls);
> ...
>
> if (idx >= 0) {
> qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_overlay[idx]);
> qmp_ufs_lanes_init(qmp, &cfg->tbls_hs_overlay[idx]);
> ...
> }
> ```
>
> Since the ordering doesn't matter for init sequence, you can program the overlay
> tables under a single condition.
We can do that, but we need to be careful. When I say (in my previous
reply) the ordering does not matter, that saying is from the UFS PHY HPG
doc. However, in SW implementation, the 'tbls_hs_b' is actually
overwriting one COM_VCO_TUNE_MAP register, the same register is also
programmed by common table or overlay table. So qmp_ufs_serdes_init(qmp,
&cfg->tbls_hs_b) should come after overlays.
Thanks,
Can Guo.
>
> - Mani
>
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