From: Konrad Dybcio <konrad.dybcio@linaro.org>
Date: Fri, 10 May 2024 13:39:59 +0000 (+0200)
Subject: arm64: dts: qcom: sc8280xp: Set status = "reserved" on PSHOLD
X-Git-Tag: v6.10~11^2~7^2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8a1fd54d007279207c1dfe090084749706fb413b;p=thirdparty%2Flinux.git

arm64: dts: qcom: sc8280xp: Set status = "reserved" on PSHOLD

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@kali.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Link: https://lore.kernel.org/r/20240510-topic-8280_off-v1-1-bcc70cda449e@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index 0549ba1fbeea8..59f0a850671a3 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -4623,6 +4623,8 @@
 		restart@c264000 {
 			compatible = "qcom,pshold";
 			reg = <0 0x0c264000 0 0x4>;
+			/* TZ seems to block access */
+			status = "reserved";
 		};
 
 		tsens1: thermal-sensor@c265000 {