linux-kernel - [PATCH] arm64: dts: qcom: qcs615: Add Command DB support

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Message-ID: <20250221-add_command_db_support-v1-1-d60acbf913aa@quicinc.com>
Date: Fri, 21 Feb 2025 15:39:57 +0800
From: Lijuan Gao <quic_lijuang@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
CC: <kernel@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Lijuan Gao
	<quic_lijuang@...cinc.com>
Subject: [PATCH] arm64: dts: qcom: qcs615: Add Command DB support

Command DB is a database in the shared memory of QCOM SoCs, that
provides a mapping between resource key and the resource address for a
system resource managed by a remote processor. The data is stored in a
shared memory region and is loaded by the remote processor. Therefore,
enabling Command DB ensures that those resources function properly.

Signed-off-by: Lijuan Gao <quic_lijuang@...cinc.com>
---
 arch/arm64/boot/dts/qcom/qcs615.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
index f4abfad474ea..4e060ce68e6c 100644
--- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
@@ -417,6 +417,12 @@ reserved-memory {
 		#size-cells = <2>;
 		ranges;
 
+		aop_cmd_db_mem: aop-cmd-db@...20000 {
+			compatible = "qcom,cmd-db";
+			reg = <0x0 0x85f20000 0x0 0x20000>;
+			no-map;
+		};
+
 		smem_region: smem@...00000 {
 			compatible = "qcom,smem";
 			reg = <0x0 0x86000000 0x0 0x200000>;

---
base-commit: 8936cec5cb6e27649b86fabf383d7ce4113bba49
change-id: 20250220-add_command_db_support-71c1e7d683b4

Best regards,
-- 
Lijuan Gao <quic_lijuang@...cinc.com>