linux-kernel - [PATCH v2] arm64: dts: qcom: sdm630: fix gpu_speed

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251211-sdm630-fix-gpu-v2-1-92f0e736dba0@oss.qualcomm.com>
Date: Thu, 11 Dec 2025 03:27:45 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alexey Minnekhanov <alexeymin@...tmarketos.org>
Cc: Konrad Dybcio <konradybcio@...il.com>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] arm64: dts: qcom: sdm630: fix gpu_speed_bin size

Historically sdm630.dtsi has used 1 byte length for the gpu_speed_bin
cell, although it spans two bytes (offset 5, size 7 bits). It was being
accepted by the kernel because before the commit 7a06ef751077 ("nvmem:
core: fix bit offsets of more than one byte") the kernel didn't have
length check. After this commit nvmem core rejects QFPROM on sdm630 /
sdm660, making GPU and USB unusable on those platforms.

Set the size of the gpu_speed_bin cell to 2 bytes, fixing the parsing
error. While we are at it, update the length to 8 bits as pointed out by
Alexey Minnekhanov.

Fixes: b190fb010664 ("arm64: dts: qcom: sdm630: Add sdm630 dts file")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
Changes in v2:
- Update cell length to 8 bits (Alexey)
- Link to v1: https://lore.kernel.org/r/20251006-sdm630-fix-gpu-v1-1-44d69bdea59a@oss.qualcomm.com
---
 arch/arm64/boot/dts/qcom/sdm630.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm630.dtsi b/arch/arm64/boot/dts/qcom/sdm630.dtsi
index 8b1a45a4e56e..b383e480a394 100644
--- a/arch/arm64/boot/dts/qcom/sdm630.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm630.dtsi
@@ -598,8 +598,8 @@ qusb2_hstx_trim: hstx-trim@240 {
 			};
 
 			gpu_speed_bin: gpu-speed-bin@...0 {
-				reg = <0x41a2 0x1>;
-				bits = <5 7>;
+				reg = <0x41a2 0x2>;
+				bits = <5 8>;
 			};
 		};
 

---
base-commit: 008d3547aae5bc86fac3eda317489169c3fda112
change-id: 20251004-sdm630-fix-gpu-f9786db8049a

Best regards,
-- 
With best wishes
Dmitry