linux-kernel - Re: [PATCH v5 08/10] phy: qualcomm: phy-qcom-qmp-ufs: Rectify SM8550 UFS HS-G4 PHY Settings

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Message-ID: <a690f5c1-50e7-4d37-9e12-fff574917aba@quicinc.com>
Date:   Tue, 28 Nov 2023 09:50:28 +0800
From:   Can Guo <quic_cang@...cinc.com>
To:     Vinod Koul <vkoul@...nel.org>
CC:     <bvanassche@....org>, <mani@...nel.org>, <adrian.hunter@...el.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>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Johan Hovold <johan+linaro@...nel.org>,
        Abel Vesa <abel.vesa@...aro.org>,
        "open list:GENERIC PHY FRAMEWORK" <linux-phy@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 08/10] phy: qualcomm: phy-qcom-qmp-ufs: Rectify SM8550
 UFS HS-G4 PHY Settings

Hi Vinod,

On 11/27/2023 7:07 PM, Vinod Koul wrote:
> On 23-11-23, 00:46, Can Guo wrote:
>> The registers, which are being touched in current SM8550 UFS PHY settings,
>> and the values being programmed are mainly the ones working for HS-G4 mode,
>> meanwhile, there are also a few ones somehow taken from HS-G5 PHY settings.
>> However, even consider HS-G4 mode only, some of them are incorrect and some
>> are missing. Rectify the HS-G4 PHY settings by strictly aligning with the
>> SM8550 UFS PHY Hardware Programming Guide suggested HS-G4 PHY settings.
> 
> can you copy on cover so that we know the context of the series, I just
> got hit with two patches out of the blue with this
> 

Will add you to the --to list in next version. The whole series is to 
enable HS-G5 support on SM8550. FYI, the two changes to UFS PHY driver, 
which you mentioned above, in the series are to 1. Rectify existing 
HS-G4 PHY setting for SM8550 and 2. Add HS-G5 PHY settings for SM8550.

Thanks,
Can Guo.

>>
>> Fixes: 1679bfef906f ("phy: qcom-qmp-ufs: Add SM8550 support")
>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>> Reviewed-by: Abel Vesa <abel.vesa@...aro.org>
>> Signed-off-by: Can Guo <quic_cang@...cinc.com>
>> ---
>>   .../qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h    |  3 +++
>>   drivers/phy/qualcomm/phy-qcom-qmp-ufs.c            | 28 +++++++++++++++-------
>>   2 files changed, 22 insertions(+), 9 deletions(-)
>>
>> 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 15bcb4b..674f158 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
>> @@ -10,9 +10,12 @@
>>   #define QSERDES_UFS_V6_TX_RES_CODE_LANE_RX			0x2c
>>   #define QSERDES_UFS_V6_TX_RES_CODE_LANE_OFFSET_TX		0x30
>>   #define QSERDES_UFS_V6_TX_RES_CODE_LANE_OFFSET_RX		0x34
>> +#define QSERDES_UFS_V6_TX_LANE_MODE_1				0x7c
>> +#define QSERDES_UFS_V6_TX_FR_DCC_CTRL				0x108
>>   
>>   #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_FO_GAIN_RATE2			0xd4
>>   #define QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL			0x178
>>   #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B0			0x208
>>   #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B1			0x20c
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> index 3927eba..ad91f92 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> @@ -658,22 +658,26 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_serdes[] = {
>>   	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),
>> -	QMP_PHY_INIT_CFG(QSERDES_V6_COM_DEC_START_MODE0, 0x4c),
>> -	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, 0x99),
>> -	QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE0, 0x07),
>> +	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),
>> +	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_CCTRL_MODE1, 0x14),
>> +	QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP1_MODE1, 0x99),
>> +	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_tx[] = {
>> -	QMP_PHY_INIT_CFG(QSERDES_V6_TX_LANE_MODE_1, 0x05),
>> +	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),
>> +	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_FASTLOCK_FO_GAIN_RATE2, 0x0c),
>> -	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE4, 0x0f),
>> +	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),
>> @@ -696,6 +700,8 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_pcs[] = {
>>   	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),
>> +	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_HSGEAR_CAPABILITY, 0x04),
>> +	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HSGEAR_CAPABILITY, 0x04),
>>   };
>>   
>>   struct qmp_ufs_offsets {
>> @@ -1157,6 +1163,10 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
>>   		.pcs		= sm8550_ufsphy_pcs,
>>   		.pcs_num	= ARRAY_SIZE(sm8550_ufsphy_pcs),
>>   	},
>> +	.tbls_hs_b = {
>> +		.serdes		= sm8550_ufsphy_hs_b_serdes,
>> +		.serdes_num	= ARRAY_SIZE(sm8550_ufsphy_hs_b_serdes),
>> +	},
>>   	.clk_list		= sdm845_ufs_phy_clk_l,
>>   	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
>>   	.vreg_list		= qmp_phy_vreg_l,
>> -- 
>> 2.7.4
>