[RFC,v2,3/3] arm64: dts: qcom: sm8250: Add vendor-specific PSCI system reset2 type
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Message ID 1580497731-9845-4-git-send-email-eberman@codeaurora.org
State Superseded
Headers show
Series
  • ARM PSCI: Add support for vendor-specific SYSTEM_RESET2
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Commit Message

Elliot Berman Jan. 31, 2020, 7:08 p.m. UTC
Qualcomm Technologies, Inc. SoCs do not guarantee that an architectural
warm reset boots back into Linux kernel. For instance, if download mode
or reboot reason cookies are set, the SoC would do a warm reset into an
alternate exception level (e.g. a mode to collect RAM dumps) or
application at EL1 (e.g. fastboot mode). Thus, Qualcomm Technologies,
Inc. SoCs support a vendor-specific warm reset type that can be used in
all instances of warm/soft reboots.

Signed-off-by: Elliot Berman <eberman@codeaurora.org>
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index 76c0fcd..bbaeee9 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -162,6 +162,7 @@ 
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";
+		arm,psci-sys-reset2-type = <0x80000000>;
 	};
 
 	reserved_memory: reserved-memory {