Commit e1b905d6 authored by Erwan Gouriou's avatar Erwan Gouriou Committed by Christopher Friedt
Browse files

drivers: pinmux: stm32: add support for PA11/12 remap. 



STM32G0/F0 SoCs allow to remap PA11/12 to PA9/10. Some boards
were manually configuring this remap. This patch centralizes this
functionality to the pinmux driver, allowing boards to enable the
remap directly in board dts file.

Signed-off-by: default avatarGerard Marull-Paretas <gerard.marull@nordicsemi.no>
Signed-off-by: default avatarErwan Gouriou <erwan.gouriou@linaro.org>
parent 76505cff

drivers/pinmux/Kconfig.stm32

+7 −0
Original line number Diff line number Diff line
@@ -19,3 +19,10 @@ config PINMUX_STM32_DEVICE_INITIALIZATION_PRIORITY 
	  the startup cycle. Note that the pinmux device needs to be initialized

	  after clock control device, but possibly before all other devices.

	  If unsure, leave at default value 2



config PINMUX_STM32_REMAP_INIT_PRIORITY

	int "Remap initialization priority"

	default 2

	help

	  Initialization priority for the routine in charge of configuring the

	  remap for pins PA11/12.

drivers/pinmux/pinmux_stm32.c

+51 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <soc.h>

#include <stm32_ll_bus.h>

#include <stm32_ll_gpio.h>

#include <stm32_ll_system.h>

#include <drivers/pinmux.h>

#include <gpio/gpio_stm32.h>

#include <drivers/clock_control/stm32_clock_control.h>
@@ -38,6 +39,56 @@ const struct device * const gpio_ports[STM32_PORTS_MAX] = { 
	DEVICE_DT_GET_OR_NULL(DT_NODELABEL(gpiok)),

};



#if DT_NODE_HAS_PROP(DT_NODELABEL(pinctrl), remap_pa11)

#define REMAP_PA11	DT_PROP(DT_NODELABEL(pinctrl), remap_pa11)

#endif

#if DT_NODE_HAS_PROP(DT_NODELABEL(pinctrl), remap_pa12)

#define REMAP_PA12	DT_PROP(DT_NODELABEL(pinctrl), remap_pa12)

#endif

#if DT_NODE_HAS_PROP(DT_NODELABEL(pinctrl), remap_pa11_pa12)

#define REMAP_PA11_PA12	DT_PROP(DT_NODELABEL(pinctrl), remap_pa11_pa12)

#endif



#if REMAP_PA11 || REMAP_PA12 || REMAP_PA11_PA12



int stm32_pinmux_init_remap(const struct device *dev)

{

	ARG_UNUSED(dev);



#if REMAP_PA11 || REMAP_PA12



#if !defined(CONFIG_SOC_SERIES_STM32G0X)

#error "Pin remap property available only on STM32G0 SoC series"

#endif



	LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);

#if REMAP_PA11

	LL_SYSCFG_EnablePinRemap(LL_SYSCFG_PIN_RMP_PA11);

#endif

#if REMAP_PA12

	LL_SYSCFG_EnablePinRemap(LL_SYSCFG_PIN_RMP_PA12);

#endif



#elif REMAP_PA11_PA12



#if !defined(SYSCFG_CFGR1_PA11_PA12_RMP)

#error "Pin remap property available only on STM32F070x SoC series"

#endif



	LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);

	LL_SYSCFG_EnablePinRemap();



#endif /* (REMAP_PA11 || REMAP_PA12) || REMAP_PA11_PA12 */



	return 0;

}



SYS_INIT(stm32_pinmux_init_remap, PRE_KERNEL_1,

	 CONFIG_PINMUX_STM32_REMAP_INIT_PRIORITY);



#endif /* REMAP_PA11 || REMAP_PA12 || REMAP_PA11_PA12 */





static int stm32_pin_configure(uint32_t pin, uint32_t func, uint32_t altf)

{

	const struct device *port_device;

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