stm32mp: handle SYSRESET

Add support of sysreset with generic driver "syscon-reboot"
provided by RCC, for U-boot and for SPL.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 777b2f0..190f883 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1166,6 +1166,7 @@ config ARCH_STM32MP
        select REGMAP
        select SUPPORT_SPL
        select SYSCON
+       select SYSRESET
        select SYS_THUMB_BUILD
        help
          Support for STM32MP SoC family developed by STMicroelectronics,

diff --git a/arch/arm/dts/stm32mp157-u-boot.dtsi b/arch/arm/dts/stm32mp157-u-boot.dtsi
index 7a9a4ce..1eca802 100644 (file)
--- a/arch/arm/dts/stm32mp157-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157-u-boot.dtsi
@@ -72,6 +72,10 @@
        u-boot,dm-pre-reloc;
 };
 
+&rcc_reboot {
+       u-boot,dm-pre-reloc;
+};
+
 &pinctrl {
        u-boot,dm-pre-reloc;
 };

diff --git a/arch/arm/dts/stm32mp157.dtsi b/arch/arm/dts/stm32mp157.dtsi
index 77953c8..b84899a 100644 (file)
--- a/arch/arm/dts/stm32mp157.dtsi
+++ b/arch/arm/dts/stm32mp157.dtsi
@@ -114,6 +114,13 @@
                                #reset-cells = <1>;
                                compatible = "st,stm32mp1-rcc-rst";
                        };
+
+                       rcc_reboot: rcc-reboot@50000000 {
+                               compatible = "syscon-reboot";
+                               regmap = <&rcc>;
+                               offset = <0x404>;
+                               mask = <0x1>;
+                       };
                };
 
                pinctrl: pin-controller {

diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig
index 9771af9..8ca97bf 100644 (file)
--- a/arch/arm/mach-stm32mp/Kconfig
+++ b/arch/arm/mach-stm32mp/Kconfig
@@ -16,6 +16,7 @@ config SPL
        select SPL_RESET_SUPPORT
        select SPL_SERIAL_SUPPORT
        select SPL_SYSCON
+       select SPL_DRIVERS_MISC_SUPPORT
        imply SPL_LIBDISK_SUPPORT
 
 config SYS_SOC
@@ -26,6 +27,7 @@ config TARGET_STM32MP1
        select CPU_V7
        select PINCTRL_STM32
        select STM32_RESET
+       select SYSRESET_SYSCON
        help
                target STMicroelectronics SOC STM32MP1 family
                STMicroelectronics MPU with core ARMv7

diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index 4ba2aec..f9f3bf9 100644 (file)
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -269,7 +269,3 @@ int arch_misc_init(void)
 
        return 0;
 }
-
-void reset_cpu(ulong addr)
-{
-}