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Tue, 29 Sep 2026 01:35:34 -0700 (PDT) Received: from hu-kotarake-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cc78791c3bdsm5725689a12.13.2026.09.29.01.35.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2026 01:35:33 -0700 (PDT) From: Rakesh Kota Date: Tue, 29 Sep 2026 14:05:18 +0530 Subject: [PATCH v2] arm64: dts: qcom: shikra-iqs-som: Correct PM8150 L10 voltage range Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260929-fix_l10_max-v2-1-2fccd87115e7@oss.qualcomm.com> X-B4-Tracking: v=1; b=H4sIAEV4u2oC/22Nyw6CMBBFf4XM2pI+DFhX/ochBNpBaoBqBwiG8 O8W3LqZ5OTee2YFwuCQ4JqsEHB25PwQQZ4SMG01PJA5GxkklxnXUrLGLWUneNlXCzO50tyivth cQVy8Asb4sN2LH9NUP9GMu2JvtI5GHz7Hu1nsvf/mWTDBLDdaNzxTdXO+eaL0PVWd8X2fxgPFt m1fkfJS7r8AAAA= X-Change-ID: 20260922-fix_l10_max-c7390de98d73 To: Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Kamal Wadhwa , Jishnu Prakash , Nitin Rawat , Rakesh Kota X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; 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Its maximum voltage must be limited to 3.3 V because the derived VQMMC voltage on L2 supports up to approximately 3.3 V. Allowing VMMC to reach 3.544 V can drive VQMMC beyond its supported range, potentially causing SD bus bit errors and resulting in the voltage negotiation failure: l2: unsupportable voltage range: 3500000-3296000uV Reducing L10's maximum voltage to 3.3 V keeps both rails within their supported operating ranges. Co-developed-by: Nitin Rawat Signed-off-by: Nitin Rawat Signed-off-by: Rakesh Kota --- Changes in v2: - Update the commit message. - Link to v1: https://patch.msgid.link/20260922-fix_l10_max-v1-1-d0c99f063bf4@oss.qualcomm.com --- arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi b/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi index e119ace54e58..ba8c93f01546 100644 --- a/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi +++ b/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi @@ -172,7 +172,7 @@ pm8150_l9: l9 { pm8150_l10: l10 { regulator-min-microvolt = <2700000>; - regulator-max-microvolt = <3544000>; + regulator-max-microvolt = <3300000>; }; pm8150_l11: l11 { --- base-commit: 6375e61c01e93e35ee7acd336a689ac1fae4b509 change-id: 20260922-fix_l10_max-c7390de98d73 Best regards, -- Rakesh Kota