[PATCH 11/14] ARM: dts: stm32: define SCMI resources on stm32mp15
From: <hidden>
Date: 2021-01-22 11:05:24
Also in:
linux-arm-kernel, linux-clk, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Gabriel Fernandez <redacted> 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 <redacted> Signed-off-by: Gabriel Fernandez <redacted> --- 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