162d58c26d
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 will use the common macro to define pinmux. Furthermore, it will make STM32 maintenance and integration of new SOC easier . Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com> Reviewed-by: Vikas MANOCHA <vikas.manocha@st.com> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Rob Herring <robh@kernel.org>
31 lines
607 B
C
31 lines
607 B
C
#ifndef _DT_BINDINGS_STM32_PINFUNC_H
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#define _DT_BINDINGS_STM32_PINFUNC_H
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/* define PIN modes */
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#define GPIO 0x0
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#define AF0 0x1
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#define AF1 0x2
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#define AF2 0x3
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#define AF3 0x4
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#define AF4 0x5
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#define AF5 0x6
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#define AF6 0x7
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#define AF7 0x8
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#define AF8 0x9
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#define AF9 0xa
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#define AF10 0xb
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#define AF11 0xc
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#define AF12 0xd
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#define AF13 0xe
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#define AF14 0xf
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#define AF15 0x10
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#define ANALOG 0x11
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/* define Pins number*/
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#define PIN_NO(port, line) (((port) - 'A') * 0x10 + (line))
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#define STM32_PINMUX(port, line, mode) (((PIN_NO(port, line)) << 8) | (mode))
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#endif /* _DT_BINDINGS_STM32_PINFUNC_H */
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