linux-kernel - Re: [PATCH v7 3/6] phy: qcom-qmp: Add SM6125 UFS PHY support

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Date:   Wed, 8 Mar 2023 11:09:48 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Lux Aliaga <they@...t.lgbt>, agross@...nel.org,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, vkoul@...nel.org,
        kishon@...nel.org, alim.akhtar@...sung.com, avri.altman@....com,
        bvanassche@....org, keescook@...omium.org, tony.luck@...el.com,
        gpiccoli@...lia.com
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-scsi@...r.kernel.org, linux-hardening@...r.kernel.org,
        phone-devel@...r.kernel.org, martin.botka@...ainline.org,
        marijn.suijten@...ainline.org
Subject: Re: [PATCH v7 3/6] phy: qcom-qmp: Add SM6125 UFS PHY support



On 6.03.2023 18:08, Lux Aliaga wrote:
> The SM6125 UFS PHY is compatible with the one from SM6115. Add a
> compatible for it and modify the config from SM6115 to make them
> compatible with the SC8280XP binding
> 
> Signed-off-by: Lux Aliaga <they@...t.lgbt>
> Reviewed-by: Martin Botka <martin.botka@...ainline.org>
> ---
>  drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> index 318eea35b972..44c29fdfc551 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> @@ -620,6 +620,13 @@ static const char * const qmp_phy_vreg_l[] = {
>  	"vdda-phy", "vdda-pll",
>  };
>  
> +static const struct qmp_ufs_offsets qmp_ufs_offsets_v3_660 = {
> +	.serdes		= 0,
> +	.pcs		= 0xc00,
> +	.tx		= 0x400,
> +	.rx		= 0x600,
> +};
> +
>  static const struct qmp_ufs_offsets qmp_ufs_offsets_v5 = {
>  	.serdes		= 0,
>  	.pcs		= 0xc00,
> @@ -693,6 +700,8 @@ static const struct qmp_phy_cfg sdm845_ufsphy_cfg = {
>  static const struct qmp_phy_cfg sm6115_ufsphy_cfg = {
>  	.lanes			= 1,
>  
> +	.offsets		= &qmp_ufs_offsets_v3_660,
Will this not trigger OOB r/w for the users of qcom,sm6115-smp-ufs-phy
which specify the regions separately (old binding style)?

Konrad
> +
>  	.serdes_tbl		= sm6115_ufsphy_serdes_tbl,
>  	.serdes_tbl_num		= ARRAY_SIZE(sm6115_ufsphy_serdes_tbl),
>  	.tx_tbl			= sm6115_ufsphy_tx_tbl,
> @@ -1172,6 +1181,9 @@ static const struct of_device_id qmp_ufs_of_match_table[] = {
>  	}, {
>  		.compatible = "qcom,sm6115-qmp-ufs-phy",
>  		.data = &sm6115_ufsphy_cfg,
> +	}, {
> +		.compatible = "qcom,sm6125-qmp-ufs-phy",
> +		.data = &sm6115_ufsphy_cfg,
>  	}, {
>  		.compatible = "qcom,sm6350-qmp-ufs-phy",
>  		.data = &sdm845_ufsphy_cfg,