[PATCH] arm64: dts: qcom: sc8280xp: Set status = "reserved" on PSHOLD
From: Konrad Dybcio
Date: Fri May 10 2024 - 09:40:14 EST
On most devices, TZ seems to be blocking access to the PSHOLD reboot
register. This seems to be TZ, as even kicking the hypervisor doesn't
seem to make it writable.
Fixes: 865ff2e6f5da ("arm64: dts: qcom: sc8280xp: Add PS_HOLD restart")
Reported-by: Steev Klimaszewski <steev@xxxxxxxx>
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index 0549ba1fbeea..59f0a850671a 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -4623,6 +4623,8 @@ tsens0: thermal-sensor@c263000 {
restart@c264000 {
compatible = "qcom,pshold";
reg = <0 0x0c264000 0 0x4>;
+ /* TZ seems to block access */
+ status = "reserved";
};
tsens1: thermal-sensor@c265000 {
---
base-commit: 704ba27ac55579704ba1289392448b0c66b56258
change-id: 20240510-topic-8280_off-11539fc57f98
Best regards,
--
Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>