linux-kernel - Re: [PATCH V3 2/2] phy: qcom-qmp-ufs: Add Phy Configuration support for SC7280

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Date:   Fri, 15 Sep 2023 21:44:13 +0530
From:   Nitin Rawat <quic_nitirawa@...cinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Manish Pandey <quic_mapa@...cinc.com>
Subject: Re: [PATCH V3 2/2] phy: qcom-qmp-ufs: Add Phy Configuration support
 for SC7280



On 9/6/2023 1:34 AM, Dmitry Baryshkov wrote:
> On 23/08/2023 12:17, Nitin Rawat wrote:
>> Add SC7280 specific register layout and table configs.
>>
>> Co-developed-by: Manish Pandey <quic_mapa@...cinc.com>
>> Signed-off-by: Manish Pandey <quic_mapa@...cinc.com>
>> Signed-off-by: Nitin Rawat <quic_nitirawa@...cinc.com>
>> ---
>>   drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 142 ++++++++++++++++++++++++
>>   1 file changed, 142 insertions(+)
>>
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c 
>> b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> index 3927eba8e468..514fa14df634 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> 
> [skipped tables programming]
> 
> 4),
Sorry I quite didn't get this comment. what exactly is skipped ?Please 
can you help explain?


>> @@ -888,6 +993,40 @@ static const struct qmp_phy_cfg 
>> sa8775p_ufsphy_cfg = {
>>       .regs            = ufsphy_v5_regs_layout,
>>   };
>>
>> +static const struct qmp_phy_cfg sc7280_ufsphy_cfg = {
>> +    .lanes                  = 2,
>> +
>> +    .offsets                = &qmp_ufs_offsets,
>> +
>> +    .tbls = {
>> +        .serdes         = sm8150_ufsphy_serdes,
>> +        .serdes_num     = ARRAY_SIZE(sm8150_ufsphy_serdes),
>> +        .tx             = sc7280_ufsphy_tx,
>> +        .tx_num         = ARRAY_SIZE(sc7280_ufsphy_tx),
>> +        .rx             = sc7280_ufsphy_rx,
>> +        .rx_num         = ARRAY_SIZE(sc7280_ufsphy_rx),
>> +        .pcs            = sc7280_ufsphy_pcs,
>> +        .pcs_num        = ARRAY_SIZE(sc7280_ufsphy_pcs),
>> +    },
>> +    .tbls_hs_b = {
>> +        .serdes         = sm8150_ufsphy_hs_b_serdes,
>> +        .serdes_num     = ARRAY_SIZE(sm8150_ufsphy_hs_b_serdes),
>> +    },
>> +    .tbls_hs_g4 = {
>> +        .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),
>> +    },
>> +    .clk_list               = sm8450_ufs_phy_clk_l,
>> +    .num_clks               = ARRAY_SIZE(sm8450_ufs_phy_clk_l),
> 
> This doesn't correspond to the bindings. This array has 3 enries, while 
> in the bindings you have opted for two clocks for this PHY.
Sure. I'll update the bindings.

> 
>> +    .vreg_list              = qmp_phy_vreg_l,
>> +    .num_vregs              = ARRAY_SIZE(qmp_phy_vreg_l),
>> +    .regs                   = ufsphy_v4_regs_layout,
>> +};
>> +
>>   static const struct qmp_phy_cfg sc8280xp_ufsphy_cfg = {
>>       .lanes            = 2,
>>
>> @@ -1648,6 +1787,9 @@ static const struct of_device_id 
>> qmp_ufs_of_match_table[] = {
>>       }, {
>>           .compatible = "qcom,sa8775p-qmp-ufs-phy",
>>           .data = &sa8775p_ufsphy_cfg,
>> +    }, {
>> +        .compatible = "qcom,sc7280-qmp-ufs-phy",
>> +        .data = &sc7280_ufsphy_cfg,
>>       }, {
>>           .compatible = "qcom,sc8180x-qmp-ufs-phy",
>>           .data = &sm8150_ufsphy_cfg,
>> -- 
>> 2.17.1
>>
> 
Thanks,
Nitin