From: Ludovic Barre <ludovic.barre@xxxxxx>
This patch adds initial support of STM32MP157 microprocessor (MPU)
based on Arm Cortex-A7. Under new ARCH_STM32_MPU flag we select the
needed Cortex-A infrastructure (like gic, timer,...)
Signed-off-by: Ludovic Barre <ludovic.barre@xxxxxx>
---
Documentation/arm/stm32/stm32mp157-overview.txt | 12 ++++++++++++
Documentation/devicetree/bindings/arm/stm32.txt | 1 +
arch/arm/mach-stm32/Kconfig | 22 ++++++++++++++++++++--
arch/arm/mach-stm32/Makefile | 1 +
arch/arm/mach-stm32/board-mpu-dt.c | 16 ++++++++++++++++
5 files changed, 50 insertions(+), 2 deletions(-)
create mode 100644 Documentation/arm/stm32/stm32mp157-overview.txt
create mode 100644 arch/arm/mach-stm32/board-mpu-dt.c
diff --git a/Documentation/arm/stm32/stm32mp157-overview.txt b/Documentation/arm/stm32/stm32mp157-overview.txt
new file mode 100644
index 0000000..8a3e7cb
--- /dev/null
+++ b/Documentation/arm/stm32/stm32mp157-overview.txt
@@ -0,0 +1,12 @@
+ STM32MP157 Overview
+ ===================
+
+ Introduction
+ ------------
+ The STM32MP157 is a Cortex-A MPU aimed at various applications.
+ It features:
+ - Dual core Cortex-A7 application core
+ - 2D/3D image composition with GPU
+ - Standard memories interface support
+ - Standard connectivity, widely inherited from the STM32 MCU family
+ - Comprehensive security support
diff --git a/Documentation/devicetree/bindings/arm/stm32.txt b/Documentation/devicetree/bindings/arm/stm32.txt
index 05762b0..6808ed9 100644
--- a/Documentation/devicetree/bindings/arm/stm32.txt
+++ b/Documentation/devicetree/bindings/arm/stm32.txt
@@ -7,3 +7,4 @@ using one of the following compatible strings:
st,stm32f469
st,stm32f746
st,stm32h743
+ st,stm32mp157
diff --git a/arch/arm/mach-stm32/Kconfig b/arch/arm/mach-stm32/Kconfig
index c8059ea..2b227c7 100644
--- a/arch/arm/mach-stm32/Kconfig
+++ b/arch/arm/mach-stm32/Kconfig
@@ -1,12 +1,12 @@
menuconfig ARCH_STM32
- bool "STMicrolectronics STM32 family" if ARM_SINGLE_ARMV7M
+ bool "STMicrolectronics STM32 family" if ARM_SINGLE_ARMV7M || ARCH_MULTI_V7
select ARCH_HAS_RESET_CONTROLLER
select CLKSRC_STM32
select PINCTRL
select RESET_CONTROLLER
select STM32_EXTI
help
- Support for STMicroelectronics STM32 MCU family
+ Support for STMicroelectronics STM32 MCU/MPU family
if ARCH_STM32
@@ -40,4 +40,22 @@ config MACH_STM32H743
endif
+if ARCH_MULTI_V7
+
+config ARCH_STM32_MPU
+ bool "STMicrolectronics STM32 MPU"
+ default y
+ select ARM_GIC
+ select HAVE_ARM_ARCH_TIMER
+ select ARM_PSCI
+ help
+ Support for STMicroelectronics STM32 Microprocessors.
+
+config MACH_STM32MP157
+ bool "STMicrolectronics STM32MP157"
+ depends on ARCH_STM32_MPU
+ default y
+
+endif
+
endif
diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile
index 90c1b71..a405eb6 100644
--- a/arch/arm/mach-stm32/Makefile
+++ b/arch/arm/mach-stm32/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_ARCH_STM32_MCU) += board-mcu-dt.o
+obj-$(CONFIG_ARCH_STM32_MPU) += board-mpu-dt.o
diff --git a/arch/arm/mach-stm32/board-mpu-dt.c b/arch/arm/mach-stm32/board-mpu-dt.c
new file mode 100644
index 0000000..9e18405
--- /dev/null
+++ b/arch/arm/mach-stm32/board-mpu-dt.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
+ * Author: Ludovic Barre <ludovic.barre@xxxxxx> for STMicroelectronics.
+ */
+#include <asm/mach/arch.h>
+#include <linux/of_platform.h>
+
+static const char *const stm32mp_compat[] __initconst = {
+ "st,stm32mp157",
+ NULL
+};
+
+DT_MACHINE_START(STM32MPDT, "STM32 MP (Device Tree Support)")
+ .dt_compat = stm32mp_compat,
+MACHINE_END
--
2.7.4
--
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