linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: sm8550-mtp: Add UFS host controller and PHY node

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Message-ID: <Y302OBP1f8W6pr5A@linaro.org>
Date:   Tue, 22 Nov 2022 22:51:04 +0200
From:   Abel Vesa <abel.vesa@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sm8550-mtp: Add UFS host
 controller and PHY node

On 22-11-16 13:56:36, Konrad Dybcio wrote:
> 
> 
> On 16/11/2022 13:51, Abel Vesa wrote:
> > Enable UFS host controller and PHY node on SM8550 MTP board.
> > 
> > Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> > ---
> >   arch/arm64/boot/dts/qcom/sm8550-mtp.dts | 22 ++++++++++++++++++++++
> >   1 file changed, 22 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/sm8550-mtp.dts b/arch/arm64/boot/dts/qcom/sm8550-mtp.dts
> > index d4c8d5b2497e..fef7793a7dec 100644
> > --- a/arch/arm64/boot/dts/qcom/sm8550-mtp.dts
> > +++ b/arch/arm64/boot/dts/qcom/sm8550-mtp.dts
> > @@ -417,3 +417,25 @@ data-pins {
> >   &uart7 {
> >   	status = "okay";
> >   };
> > +
> > +&ufs_mem_hc {
> > +	status = "okay";
> Status last, please.

Yep. Will do.

> 
> > +
> > +	reset-gpios = <&tlmm 210 GPIO_ACTIVE_LOW>;
> > +
> > +	vcc-supply = <&vreg_l17b_2p5>;
> > +	vcc-max-microamp = <1300000>;
> All these -microamp properties are downstream and do not exist in the
> mainline kernel. Remove them.
> 

Actually, ufshcd-qcom complains if they are missing:

[    3.287836] ufshcd-qcom 1d84000.ufshc: ufshcd_populate_vreg: unable
to find vcc-max-microamp
[    3.331904] ufshcd-qcom 1d84000.ufshc: ufshcd_populate_vreg: unable
to find vccq-max-microamp
[    3.346766] ufshcd-qcom 1d84000.ufshc: ufshcd_populate_vreg: unable
to find vccq2-max-microamp

> Konrad
> > +	vccq-supply = <&vreg_l1g_1p2>;
> > +	vccq-max-microamp = <1200000>;
> > +	vccq2-supply = <&vreg_l3g_1p2>;
> > +	vccq2-max-microamp = <100>;
> > +};
> > +
> > +&ufs_mem_phy {
> > +	status = "okay";
> > +
> > +	vdda-phy-supply = <&vreg_l1d_0p88>;
> > +	vdda-phy-max-microamp = <188000>;

These ones from PHY I can drop, since the driver won't complain.

> > +	vdda-pll-supply = <&vreg_l3e_1p2>;
> > +	vdda-pll-max-microamp = <18300>;
> > +};