[PATCH 00/14] Add support to STMicroelectronics STM32 family
From: mcoquelin.stm32@gmail.com (Maxime Coquelin)
Date: 2015-02-16 11:52:38
Also in:
linux-api, linux-arch, linux-devicetree, linux-gpio, linux-serial, lkml
Hi Andreas, 2015-02-15 16:14 GMT+01:00 Andreas F?rber [off-list ref]:
Hi Maxime, Am 12.02.2015 um 18:45 schrieb Maxime Coquelin:quoted
This patchset adds basic support for STMicroelectronics STM32 series MCUs. STM32 MCUs are Cortex-M CPU, used in various applications (consumer electronics, industrial applications, hobbyists...). Datasheets, user and programming manuals are publicly available on STMicroelectronics website. With this series applied, the STM32F419 Discovery can boot succesfully. Once this series accepted, next steps will be to add DMA support, as USART, I2C and SPI IPs don't have any FIFO. Then will come the clock driver, as today the bootloader has to be patched to enable the needed clocks.This is somewhat unfortunate, as I have been working on the same thing and have demonstrated the STM32F429 Discovery Kit at ARM TechSymposium Europe in December and submitted a talk for LinuxCon Japan. https://github.com/afaerber/afboot-stm32 https://github.com/afaerber/linux/commits/stm32
Hmm, I wasn't aware you were also working on it. The good news is that we are not alone on this task :). I do it on my spare time, so any contribution is more than welcome.
On a brief look, it seems you are further along in terms of code quality and documenting. Do you spot anything that's missing in your series and could be added from my branch? The clk controller maybe? Also I already started looking into gpio and usb drivers. Me too, I skipped DMA support though.
The GPIO support is already part of the pinctrl patch. The missing thing is the GPIO interrupt feature, but I am working on it. Maybe you could focus on the clock support, as I see its support is well advanced in you tree? I see one bug in it, the timer clocks should be 90MHz, but your patch indicates 45MHz. I see you have started the LCD controller driver, maybe that is another task you could handle? Regarding USB, have you made it to work? Kind regards, Maxime
Regards, Andreasquoted
Maxime Coquelin (14): scripts: link-vmlinux: Don't pass page offset to kallsyms if XIP Kernel ARM: ARMv7M: Enlarge vector table to 256 entries clocksource: Add ARM System timer driver reset: Add reset_controller_of_init() function ARM: call reset_controller_of_init from default time_init handler drivers: reset: Add STM32 reset driver clockevent: Add STM32 Timer driver pinctrl: Add pinctrl driver for STM32 MCUs serial: stm32-usart: Add STM32 USART Driver ARM: Add STM32 family machine ARM: dts: Add ARM System timer as clockevent in armv7m ARM: dts: Introduce STM32F429 MCU ARM: configs: Add STM32 defconfig MAINTAINERS: Add entry for STM32 MCUs Documentation/arm/stm32/overview.txt | 32 + Documentation/arm/stm32/stm32f429-overview.txt | 22 + .../devicetree/bindings/arm/system_timer.txt | 15 + .../devicetree/bindings/pinctrl/pinctrl-stm32.txt | 99 +++ .../devicetree/bindings/reset/st,stm32-reset.txt | 19 + .../devicetree/bindings/serial/st,stm32-usart.txt | 18 + .../devicetree/bindings/timer/st,stm32-timer.txt | 19 + MAINTAINERS | 7 + arch/arm/Kconfig | 22 + arch/arm/Makefile | 1 + arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/armv7-m.dtsi | 7 + arch/arm/boot/dts/stm32f429-disco.dts | 41 ++ arch/arm/boot/dts/stm32f429.dtsi | 279 ++++++++ arch/arm/configs/stm32_defconfig | 72 ++ arch/arm/kernel/entry-v7m.S | 8 +- arch/arm/kernel/time.c | 4 + arch/arm/mach-stm32/Makefile | 1 + arch/arm/mach-stm32/Makefile.boot | 0 arch/arm/mach-stm32/board-dt.c | 19 + drivers/clocksource/Kconfig | 16 + drivers/clocksource/Makefile | 2 + drivers/clocksource/arm_system_timer.c | 74 ++ drivers/clocksource/timer-stm32.c | 187 +++++ drivers/pinctrl/Kconfig | 9 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-stm32.c | 779 +++++++++++++++++++++ drivers/reset/Makefile | 1 + drivers/reset/core.c | 20 + drivers/reset/reset-stm32.c | 124 ++++ drivers/tty/serial/Kconfig | 17 + drivers/tty/serial/Makefile | 1 + drivers/tty/serial/stm32-usart.c | 695 ++++++++++++++++++ include/asm-generic/vmlinux.lds.h | 4 +- include/dt-bindings/pinctrl/pinctrl-stm32.h | 43 ++ include/linux/reset-controller.h | 6 + include/uapi/linux/serial_core.h | 3 + scripts/link-vmlinux.sh | 2 +- 38 files changed, 2664 insertions(+), 6 deletions(-) create mode 100644 Documentation/arm/stm32/overview.txt create mode 100644 Documentation/arm/stm32/stm32f429-overview.txt create mode 100644 Documentation/devicetree/bindings/arm/system_timer.txt create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-stm32.txt create mode 100644 Documentation/devicetree/bindings/reset/st,stm32-reset.txt create mode 100644 Documentation/devicetree/bindings/serial/st,stm32-usart.txt create mode 100644 Documentation/devicetree/bindings/timer/st,stm32-timer.txt create mode 100644 arch/arm/boot/dts/stm32f429-disco.dts create mode 100644 arch/arm/boot/dts/stm32f429.dtsi create mode 100644 arch/arm/configs/stm32_defconfig 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 create mode 100644 drivers/clocksource/arm_system_timer.c create mode 100644 drivers/clocksource/timer-stm32.c create mode 100644 drivers/pinctrl/pinctrl-stm32.c create mode 100644 drivers/reset/reset-stm32.c create mode 100644 drivers/tty/serial/stm32-usart.c create mode 100644 include/dt-bindings/pinctrl/pinctrl-stm32.h-- SUSE Linux GmbH, Maxfeldstr. 5, 90409 N?rnberg, Germany GF: Felix Imend?rffer, Jane Smithard, Jennifer Guild, Dilip Upmanyu, Graham Norton; HRB 21284 (AG N?rnberg)