Messages in this thread | | | From | Alexandre Torgue <> | Subject | [PATCH v4] ARM: dts: stm32: change pinctrl bindings definition | Date | Wed, 30 Aug 2017 16:50:52 +0200 |
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Initially each pin was declared in "include/dt-bindings/stm32<SOC>-pinfunc.h" and each definition contained SOC names (ex: STM32F429_PA9_FUNC_USART1_TX). Since this approach was approved, the number of supported MCU has increased (STM32F429/STM32F469/STM32f746/STM32H743). To avoid to add a new file in "include/dt-bindings" each time a new STM32 SOC arrives I propose a new approach which consist to use a macro to define pin muxing in device tree. All STM32 DT will use the common macro to define pinmux. Furthermore, it will make maintenance and integration of new SOC easier.
I made only one patch to avoid dependencies. Let me know if you prefer that I split it.
To check that patch generate same dtb than befrore I used dtc binary to (re)generate dts files (before and after apply the series).
Example on stm32f469-disco:
./scripts/dtc/dtc -I dtb -O dts -o stm32f469-disco-after.dts stm32f469-disco-after.dtb
./scripts/dtc/dtc -I dtb -O dts -o stm32f469-disco-before.dts stm32f469-disco-before.dtb
Then diff -u stm32f469-disco-before.dts stm32f469-disco-after.dts
Changes since v3: -Rewrite documentation part -Simplify macro
Changes since v2: -Drop RFC tag -Add reviewers -Enhance modifications to all STM32 (F4/F7/H7)
Changes since v1: -According to Vikas Manocha review, use generic macro to define port.
Regards Alex
Alexandre Torgue (1): ARM: dts: stm32: change pinctrl bindings definition
.../bindings/pinctrl/st,stm32-pinctrl.txt | 22 +- arch/arm/boot/dts/stm32f429.dtsi | 176 +-- arch/arm/boot/dts/stm32f746.dtsi | 10 +- arch/arm/boot/dts/stm32h743-pinctrl.dtsi | 10 +- include/dt-bindings/pinctrl/stm32-pinfunc.h | 30 + include/dt-bindings/pinctrl/stm32f429-pinfunc.h | 1239 --------------- include/dt-bindings/pinctrl/stm32f746-pinfunc.h | 1324 ---------------- include/dt-bindings/pinctrl/stm32h7-pinfunc.h | 1612 -------------------- 8 files changed, 148 insertions(+), 4275 deletions(-) create mode 100644 include/dt-bindings/pinctrl/stm32-pinfunc.h delete mode 100644 include/dt-bindings/pinctrl/stm32f429-pinfunc.h delete mode 100644 include/dt-bindings/pinctrl/stm32f746-pinfunc.h delete mode 100644 include/dt-bindings/pinctrl/stm32h7-pinfunc.h
-- 2.7.4
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