arm64: dts: s32g: add SCMI firmware node

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@nxp.com>
Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Chester Lin <chester62515@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
index 5ac1cc9ff50ed140a8e0c13456c05bd8310fef0e..ef1a1d61f2ba6d7f0dab0b8c342527bfd4d3a63e 100644 (file)
--- 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 @@
        };
 
        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";