linux-kernel - [PATCH v2] arm64: dts: ipq8074: add SMEM support

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Message-Id: <20220106212512.1970828-1-robimarko@gmail.com>
Date:   Thu,  6 Jan 2022 22:25:12 +0100
From:   Robert Marko <robimarko@...il.com>
To:     agross@...nel.org, bjorn.andersson@...aro.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Robert Marko <robimarko@...il.com>
Subject: [PATCH v2] arm64: dts: ipq8074: add SMEM support

IPQ8074 uses SMEM like other modern QCA SoC-s, so since its already
supported by the kernel add the required DT nodes.

Signed-off-by: Robert Marko <robimarko@...il.com>
---
Changes in v2:
* Use the MMIO TCSR binding
* Use the updated SMEM binding directly under reserved-memory node
---
 arch/arm64/boot/dts/qcom/ipq8074.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
index e6cc261201ef..bd70092b7156 100644
--- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
@@ -76,6 +76,20 @@ psci {
 		method = "smc";
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		smem@...00000 {
+			compatible = "qcom,smem";
+			reg = <0x0 0x4ab00000 0x0 0x00100000>;
+			no-map;
+
+			hwlocks = <&tcsr_mutex 0>;
+		};
+	};
+
 	firmware {
 		scm {
 			compatible = "qcom,scm-ipq8074", "qcom,scm";
@@ -331,6 +345,12 @@ gcc: gcc@...0000 {
 			#reset-cells = <0x1>;
 		};
 
+		tcsr_mutex: hwlock@...5000 {
+			compatible = "qcom,tcsr-mutex";
+			reg = <0x01905000 0x20000>;
+			#hwlock-cells = <1>;
+		};
+
 		spmi_bus: spmi@...f000 {
 			compatible = "qcom,spmi-pmic-arb";
 			reg = <0x0200f000 0x001000>,
-- 
2.34.1