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

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Date:   Wed, 8 Mar 2023 12:02:39 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     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, ~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 Wed, Mar 08, 2023 at 11:09:48AM +0100, Konrad Dybcio wrote:
> 
> 
> 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)?

No, that should work fine.

But looks like this series needs to be rebased on 6.3-rc1 as these
offsets are now already set in mainline.

Johan