STMicrolectronics's STM32 series is a family of Cortex-M microcontrollers. It is used in various applications, and proposes a wide range of peripherals. Signed-off-by: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> --- Documentation/arm/stm32/overview.txt | 32 ++++++++++++++++++++++++++ Documentation/arm/stm32/stm32f429-overview.txt | 22 ++++++++++++++++++ arch/arm/Kconfig | 22 ++++++++++++++++++ arch/arm/Makefile | 1 + arch/arm/mach-stm32/Makefile | 1 + arch/arm/mach-stm32/Makefile.boot | 0 arch/arm/mach-stm32/board-dt.c | 31 +++++++++++++++++++++++++ 7 files changed, 109 insertions(+) create mode 100644 Documentation/arm/stm32/overview.txt create mode 100644 Documentation/arm/stm32/stm32f429-overview.txt create mode 100644 arch/arm/mach-stm32/Makefile create mode 100644 arch/arm/mach-stm32/Makefile.boot create mode 100644 arch/arm/mach-stm32/board-dt.c diff --git a/Documentation/arm/stm32/overview.txt b/Documentation/arm/stm32/overview.txt new file mode 100644 index 0000000..d8bf6bb --- /dev/null +++ b/Documentation/arm/stm32/overview.txt @@ -0,0 +1,32 @@ + STM32 ARM Linux Overview + ========================== + +Introduction +------------ + + The STMicroelectronics family of Cortex-M based MCUs are supported by the + 'STM32' platform of ARM Linux. Currently only the STM32F429 is supported. + + +Configuration +------------- + + A generic configuration is provided for STM32 family, and can be used as the + default by + make stm32_defconfig + +Layout +------ + + All the files for multiple machine families are located in the platform code + contained in arch/arm/mach-stm32 + + There is a generic board board-dt.c in the mach folder which support + Flattened Device Tree, which means, It works with any compatible board with + Device Trees. + + +Document Author +--------------- + + Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> diff --git a/Documentation/arm/stm32/stm32f429-overview.txt b/Documentation/arm/stm32/stm32f429-overview.txt new file mode 100644 index 0000000..5206822 --- /dev/null +++ b/Documentation/arm/stm32/stm32f429-overview.txt @@ -0,0 +1,22 @@ + STM32F429 Overview + ================== + + Introduction + ------------ + The STM32F429 is a Cortex-M4 MCU aimed at various applications. + It features: + - ARM Cortex-M4 up to 180MHz with FPU + - 2MB internal Flash Memory + - External memory support through FMC controller (PSRAM, SDRAM, NOR, NAND) + - I2C, SPI, SAI, CAN, USB OTG, Ethernet controllers + - LCD controller & Camera interface + - Cryptographic processor + + Resources + --------- + Datasheet and reference manual are publicly available on ST website: + - http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1577/LN1806?ecmp=stm32f429-439_pron_pr-ces2014_nov2013 + + Document Author + --------------- + Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 97d07ed..cfd9532 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -774,6 +774,28 @@ config ARCH_OMAP1 help Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx) +config ARCH_STM32 + bool "STMicrolectronics STM32" + depends on !MMU + select ARCH_REQUIRE_GPIOLIB + select ARM_NVIC + select AUTO_ZRELADDR + select ARCH_HAS_RESET_CONTROLLER + select RESET_CONTROLLER + select PINCTRL + select PINCTRL_STM32 + select CLKSRC_OF + select ARMV7M_SYSTICK + select COMMON_CLK + select CPU_V7M + select GENERIC_CLOCKEVENTS + select NO_DMA + select NO_IOPORT_MAP + select SPARSE_IRQ + select USE_OF + help + Support for STMicorelectronics STM32 processors. + endchoice menu "Multiple platform selection" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index c1785ee..7d00659 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -196,6 +196,7 @@ machine-$(CONFIG_ARCH_SHMOBILE) += shmobile machine-$(CONFIG_ARCH_SIRF) += prima2 machine-$(CONFIG_ARCH_SOCFPGA) += socfpga machine-$(CONFIG_ARCH_STI) += sti +machine-$(CONFIG_ARCH_STM32) += stm32 machine-$(CONFIG_ARCH_SUNXI) += sunxi machine-$(CONFIG_ARCH_TEGRA) += tegra machine-$(CONFIG_ARCH_U300) += u300 diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile new file mode 100644 index 0000000..bd0b7b5 --- /dev/null +++ b/arch/arm/mach-stm32/Makefile @@ -0,0 +1 @@ +obj-y += board-dt.o diff --git a/arch/arm/mach-stm32/Makefile.boot b/arch/arm/mach-stm32/Makefile.boot new file mode 100644 index 0000000..e69de29 diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/board-dt.c new file mode 100644 index 0000000..1d681b3 --- /dev/null +++ b/arch/arm/mach-stm32/board-dt.c @@ -0,0 +1,31 @@ +/* + * Copyright (C) Maxime Coquelin 2015 + * Author: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> + * License terms: GNU General Public License (GPL), version 2 + */ + +#include <linux/kernel.h> +#include <linux/clk-provider.h> +#include <linux/clocksource.h> +#include <linux/reset-controller.h> +#include <asm/v7m.h> +#include <asm/mach/arch.h> + +static const char *const stm32_compat[] __initconst = { + "st,stm32f429", + NULL +}; + +static void __init stm32_timer_init(void) +{ + of_clk_init(NULL); + reset_controller_of_init(); + clocksource_of_init(); + +} + +DT_MACHINE_START(STM32DT, "STM32 (Device Tree Support)") + .init_time = stm32_timer_init, + .dt_compat = stm32_compat, + .restart = armv7m_restart, +MACHINE_END -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
