linux-kernel - Re: [PATCH v2] arm64: dts: qcom: qcm6490-fairphone-fp5: Enable UFS

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Date:   Mon, 2 Oct 2023 14:58:46 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Luca Weiss <luca.weiss@...rphone.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Nitin Rawat <quic_nitirawa@...cinc.com>
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: dts: qcom: qcm6490-fairphone-fp5: Enable UFS



On 10/2/23 14:30, Luca Weiss wrote:
> Enable the UFS phy and controller so that we can access the internal
> storage of the phone.
> 
> At the same time we need to bump the minimum voltage used for UFS VCC,
> otherwise it doesn't initialize properly. The 2.952V is taken from the
> vcc-voltage-level property downstream.
> 
> See also the following link for more information about the VCCQ/VCCQ2:
> https://gerrit-public.fairphone.software/plugins/gitiles/kernel/msm-extra/devicetree/+/1590a3739e7dc29d2597307881553236d492f188/fp5/yupik-idp-pm7250b.dtsi#207
> 
> Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
> ---
> Depends on: https://lore.kernel.org/linux-arm-msm/20230927081858.15961-1-quic_nitirawa@quicinc.com/
> ---
> Changes in v2:
> - Constrain UFS voltage to only 2.952V
> - Link to v1: https://lore.kernel.org/r/20230929-fp5-ufs-v1-1-122941e28b06@fairphone.com
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad