From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Monish Chunara <monish.chunara@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: Nitin Rawat <nitin.rawat@oss.qualcomm.com>,
Pradeep Pragallapati <pradeep.pragallapati@oss.qualcomm.com>,
Komal Bajaj <komal.bajaj@oss.qualcomm.com>,
Sachin Rathore <sachin.rathore@oss.qualcomm.com>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Kamal Wadhwa <kamal.wadhwa@oss.qualcomm.com>
Subject: Re: [PATCH V2 1/4] arm64: dts: qcom: glymur-crd: Update VREG l2b_e0 and l9b_e0 voltage for SD-card
Date: Fri, 3 Jul 2026 12:50:20 +0200 [thread overview]
Message-ID: <e644949d-e5f2-489c-bbc4-8204914af958@oss.qualcomm.com> (raw)
In-Reply-To: <20260702094056.3755467-2-mchunara@oss.qualcomm.com>
On 7/2/26 11:40 AM, Monish Chunara wrote:
> From: Kamal Wadhwa <kamal.wadhwa@oss.qualcomm.com>
>
> SD cards may need 1.8v VDDIO also to be supported, to accommodate this
> requirement reduce the min voltage to 1.8v for `vreg_l2b_e0` which
> supplies to VDDIO pin of SD card.
>
> NOTE - Since this SD card is the only client on this regulator, this
> change should not have any side effect on any other clients.
> moreover, SD card driver takes care to explicitly vote for the
> regulator voltage based on the SD card detection sequence.
>
> Also for stable operation of the SD card increase VDD voltage
> supplied by `vreg_l9b_e0` to 2.96v.
>
> Signed-off-by: Kamal Wadhwa <kamal.wadhwa@oss.qualcomm.com>
> Signed-off-by: Monish Chunara <monish.chunara@oss.qualcomm.com>
> ---
Please switch to using the b4 tool and run `b4 trailers -u`
before sending the new revision to make sure you pick up review
tags
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-07-03 10:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-02 9:40 [PATCH V2 0/4] arm64: dts: qcom: Add SD card support for Glymur Monish Chunara
2026-07-02 9:40 ` [PATCH V2 1/4] arm64: dts: qcom: glymur-crd: Update VREG l2b_e0 and l9b_e0 voltage for SD-card Monish Chunara
2026-07-02 12:43 ` Dmitry Baryshkov
2026-07-03 10:50 ` Konrad Dybcio [this message]
2026-07-02 9:40 ` [PATCH V2 2/4] dt-bindings: mmc: sdhci-msm: Document the Glymur compatible Monish Chunara
2026-07-03 7:10 ` Krzysztof Kozlowski
2026-07-02 9:40 ` [PATCH V2 3/4] arm64: dts: qcom: Add SD Card support for Glymur SoC Monish Chunara
2026-07-02 12:44 ` Dmitry Baryshkov
2026-07-03 10:45 ` Konrad Dybcio
2026-07-02 9:40 ` [PATCH V2 4/4] arm64: dts: qcom: Enable SD card for Glymur CRD Monish Chunara
2026-07-02 12:44 ` Dmitry Baryshkov
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