From: Val Packett <val@packett.cool>
To: 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>,
Laurentiu Tudor <laurentiu.tudor1@dell.com>,
"Bryan O'Donoghue" <bryan.odonoghue@linaro.org>,
Val Packett <val@packett.cool>
Cc: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Abel Vesa <abel.vesa@oss.qualcomm.com>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 RESEND] arm64: dts: qcom: x1-dell-thena: remove i2c20 (battery SMBus) and reserve its pins
Date: Wed, 6 May 2026 00:19:26 -0300 [thread overview]
Message-ID: <20260506032218.405131-1-val@packett.cool> (raw)
i2c20 is used by the battmgr service on the ADSP to communicate with the
SBS interface of the battery. Initializing it from Linux would break the
battmgr functionality when booted in EL2. Mark those pins as reserved.
Fixes: e7733b42111c ("arm64: dts: qcom: Add support for Dell Inspiron 7441 / Latitude 7455")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Signed-off-by: Val Packett <val@packett.cool>
---
Pinnnng..
Previously sent as https://lore.kernel.org/all/20260312005731.12488-2-val@packett.cool/
OK technically that was a 2-patch series that also included the PCIe root port
thing that's now being handled collectively for all devices where it was missing:
https://lore.kernel.org/all/20260330020934.3501247-1-ziyue.zhang@oss.qualcomm.com/
and because of that I'm only sending this, but still
---
arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi b/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi
index 7d56d05254f6..3b491369767e 100644
--- a/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi
@@ -982,12 +982,6 @@ &i2c8 {
status = "okay";
};
-&i2c20 {
- clock-frequency = <400000>;
-
- status = "okay";
-};
-
&lpass_tlmm {
spkr_01_sd_n_active: spkr-01-sd-n-active-state {
pins = "gpio12";
@@ -1313,6 +1307,7 @@ right_tweeter: speaker@0,1 {
&tlmm {
gpio-reserved-ranges = <44 4>, /* SPI11 (TPM) */
<76 4>, /* SPI19 (TZ Protected) */
+ <80 2>, /* I2C20 (Battery SMBus) */
<238 1>; /* UFS Reset */
cam_rgb_default: cam-rgb-default-state {
--
2.53.0
reply other threads:[~2026-05-06 3:22 UTC|newest]
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