Re: [PATCH v2 1/2] arm64: dts: s32g: add SCMI firmware node

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On 22/01/2024 15:06, Ghennadi Procopciuc wrote:
From: Ghennadi Procopciuc <ghennadi.procopciuc@xxxxxxx>

Linux controls the clocks over SCMI on S32G SoCs. Therefore,
add the SCMI device tree node and the reserved region for SCMI
messages.

Signed-off-by: Catalin Udma <catalin-dan.udma@xxxxxxx>
Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@xxxxxxx>

Reviewed-by: Matthias Brugger <mbrugger@xxxxxxxx>

---
  arch/arm64/boot/dts/freescale/s32g2.dtsi | 27 +++++++++++++++++++++++-
  1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
index 5ac1cc9ff50e..ef1a1d61f2ba 100644
--- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
+++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
@@ -3,7 +3,7 @@
   * NXP S32G2 SoC family
   *
   * Copyright (c) 2021 SUSE LLC
- * Copyright (c) 2017-2021 NXP
+ * Copyright 2017-2021, 2024 NXP
   */
#include <dt-bindings/interrupt-controller/arm-gic.h>
@@ -14,6 +14,18 @@ / {
  	#address-cells = <2>;
  	#size-cells = <2>;
+ reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		scmi_buf: shm@d0000000 {
+			compatible = "arm,scmi-shmem";
+			reg = <0x0 0xd0000000 0x0 0x80>;
+			no-map;
+		};
+	};
+
  	cpus {
  		#address-cells = <1>;
  		#size-cells = <0>;
@@ -77,6 +89,19 @@ timer {
  	};
firmware {
+		scmi {
+			compatible = "arm,scmi-smc";
+			arm,smc-id = <0xc20000fe>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			shmem = <&scmi_buf>;
+
+			clks: protocol@14 {
+				reg = <0x14>;
+				#clock-cells = <1>;
+			};
+		};
+
  		psci {
  			compatible = "arm,psci-1.0";
  			method = "smc";




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