From: Elliot Berman <eberman@codeaurora.org>
To: Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>
Cc: Elliot Berman <eberman@codeaurora.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Trilok Soni <tsoni@codeaurora.org>,
Prasad Sodagudi <psodagud@codeaurora.org>,
David Collins <collinsd@codeaurora.org>,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/3] arm64: dts: qcom: sm8250: Add vendor-specific PSCI system reset2 type
Date: Mon, 24 Feb 2020 12:57:38 -0800 [thread overview]
Message-ID: <1582577858-12410-4-git-send-email-eberman@codeaurora.org> (raw)
In-Reply-To: <1582577858-12410-1-git-send-email-eberman@codeaurora.org>
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(+)
diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index f63df12..ca49d22 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-param = <0x80000000>;
};
reserved_memory: reserved-memory {
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: Elliot Berman <eberman@codeaurora.org>
To: Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>
Cc: Trilok Soni <tsoni@codeaurora.org>,
David Collins <collinsd@codeaurora.org>,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Elliot Berman <eberman@codeaurora.org>,
Prasad Sodagudi <psodagud@codeaurora.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/3] arm64: dts: qcom: sm8250: Add vendor-specific PSCI system reset2 type
Date: Mon, 24 Feb 2020 12:57:38 -0800 [thread overview]
Message-ID: <1582577858-12410-4-git-send-email-eberman@codeaurora.org> (raw)
In-Reply-To: <1582577858-12410-1-git-send-email-eberman@codeaurora.org>
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(+)
diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index f63df12..ca49d22 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-param = <0x80000000>;
};
reserved_memory: reserved-memory {
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-02-24 20:57 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-24 20:57 [PATCH v2 0/3] ARM PSCI: Add support for vendor-specific SYSTEM_RESET2 Elliot Berman
2020-02-24 20:57 ` Elliot Berman
2020-02-24 20:57 ` [PATCH v2 1/3] dt: psci: Add arm,psci-sys-reset2-type property Elliot Berman
2020-02-24 20:57 ` Elliot Berman
2020-02-25 10:55 ` Sudeep Holla
2020-02-25 10:55 ` Sudeep Holla
2020-02-26 12:09 ` Mark Rutland
2020-02-26 12:09 ` Mark Rutland
2020-02-27 0:44 ` Elliot Berman
2020-02-27 0:44 ` Elliot Berman
2020-02-24 20:57 ` [PATCH v2 2/3] firmware: psci: Add support for dt-supplied SYSTEM_RESET2 type Elliot Berman
2020-02-24 20:57 ` Elliot Berman
2020-02-25 11:03 ` Sudeep Holla
2020-02-25 11:03 ` Sudeep Holla
2020-02-26 1:37 ` Elliot Berman
2020-02-26 1:37 ` Elliot Berman
2020-02-26 11:59 ` Sudeep Holla
2020-02-26 11:59 ` Sudeep Holla
2020-02-26 12:02 ` Sudeep Holla
2020-02-26 12:02 ` Sudeep Holla
2020-02-26 12:10 ` Mark Rutland
2020-02-26 12:10 ` Mark Rutland
2020-02-24 20:57 ` Elliot Berman [this message]
2020-02-24 20:57 ` [PATCH v2 3/3] arm64: dts: qcom: sm8250: Add vendor-specific PSCI system reset2 type Elliot Berman
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