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>
