From: Gabriel Fernandez <gabriel.fernandez@xxxxxxxxxxx>
Platform stm32mp15 relies on SCMI resources (clocks and reset domains).
This change adds SCMI resources description in the platform device
tree. SCMI resources uses a mailbox based on some shared memory and
a SMC mailbox notification.
SCMI0 exposes clocks and reset controllers for resources under RCC[TZEN]
configuration control. It is default enabled as SoC default
configuration is RCC[TZEN]=1.
SCMI1 exposes clocks for resources under RCC[MCKPROT] control. The node
is disabled by default as default configuration is RCC[MCKPROT]=0.
Signed-off-by: Etienne Carriere <etienne.carriere@xxxxxx>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@xxxxxxxxxxx>
---
arch/arm/boot/dts/stm32mp151.dtsi | 50 +++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
index 3c75abacb374..da3647373365 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -30,6 +30,56 @@
interrupt-parent = <&intc>;
};
+ scmi_sram: sram@2ffff000 {
+ compatible = "mmio-sram";
+ reg = <0x2ffff000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x2ffff000 0x1000>;
+
+ scmi0_shm: scmi_shm@0 {
+ reg = <0 0x80>;
+ };
+
+ scmi1_shm: scmi_shm@200 {
+ reg = <0x200 0x80>;
+ };
+ };
+
+ firmware {
+ scmi0: scmi0 {
+ compatible = "arm,scmi-smc";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ arm,smc-id = <0x82002000>;
+ shmem = <&scmi0_shm>;
+
+ scmi0_clk: protocol@14 {
+ reg = <0x14>;
+ #clock-cells = <1>;
+ };
+
+ scmi0_reset: protocol@16 {
+ reg = <0x16>;
+ #reset-cells = <1>;
+ };
+ };
+
+ scmi1: scmi1 {
+ compatible = "arm,scmi-smc";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ arm,smc-id = <0x82002001>;
+ shmem = <&scmi1_shm>;
+ status = "disabled";
+
+ scmi1_clk: protocol@14 {
+ reg = <0x14>;
+ #clock-cells = <1>;
+ };
+ };
+ };
+
psci {
compatible = "arm,psci-1.0";
method = "smc";
--
2.17.1
