[PATCH 2/6] ARM: stm32: add initial support for STM32MP157
From: Ludovic Barre <hidden>
Date: 2017-12-08 14:13:14
Also in:
linux-devicetree, lkml
Subsystem:
arm port, arm/stm32 architecture, documentation, open firmware and flattened device tree bindings, the rest · Maintainers:
Russell King, Maxime Coquelin, Alexandre Torgue, Jonathan Corbet, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Ludovic Barre <redacted> 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 <redacted> --- 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@st.com> 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