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drivers: i2c: Add STM32G4X I2C support

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Add I2C driver support for STM32G4X SoC series.

Signed-off-by: Richard Osterloh <richard.osterloh@gmail.com>
This commit is contained in:
Richard Osterloh 2019-09-04 09:44:35 +01:00 • committed by Andrew Boie
commit 4ce35300c8
5 changed files with 83 additions and 2 deletions
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4
drivers/i2c/Kconfig.stm32
View file

@ -24,13 +24,13 @@ config I2C_STM32_V1
config I2C_STM32_V2 config I2C_STM32_V2
bool bool
depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X || SOC_SERIES_STM32F7X || SOC_SERIES_STM32L0X || SOC_SERIES_STM32L4X || SOC_SERIES_STM32WBX || SOC_SERIES_STM32MP1X depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X || SOC_SERIES_STM32F7X || SOC_SERIES_STM32L0X || SOC_SERIES_STM32L4X || SOC_SERIES_STM32WBX || SOC_SERIES_STM32MP1X || SOC_SERIES_STM32G4X
select HAS_DTS_I2C select HAS_DTS_I2C
select USE_STM32_LL_I2C select USE_STM32_LL_I2C
select USE_STM32_LL_RCC if SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X select USE_STM32_LL_RCC if SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X
select I2C_STM32_INTERRUPT if I2C_SLAVE select I2C_STM32_INTERRUPT if I2C_SLAVE
help help
Enable I2C support on the STM32 F0, F3, F7, L4, WBX and MP1 family of Enable I2C support on the STM32 F0, F3, F7, L4, WBX, MP1 and G4 family of
processors. processors.
This driver also supports the L0 series. This driver also supports the L0 series.
If I2C_SLAVE is enabled it selects I2C_STM32_INTERRUPT, since slave mode If I2C_SLAVE is enabled it selects I2C_STM32_INTERRUPT, since slave mode

40
dts/arm/st/g4/stm32g4.dtsi
View file

@ -7,6 +7,7 @@
#include <arm/armv7-m.dtsi> #include <arm/armv7-m.dtsi>
#include <dt-bindings/clock/stm32_clock.h> #include <dt-bindings/clock/stm32_clock.h>
#include <dt-bindings/i2c/i2c.h>
#include <dt-bindings/gpio/gpio.h> #include <dt-bindings/gpio/gpio.h>
/ { / {
@ -166,6 +167,45 @@
label = "LPUART_1"; label = "LPUART_1";
}; };
i2c1: i2c@40005400 {
compatible = "st,stm32-i2c-v2";
clock-frequency = <I2C_BITRATE_STANDARD>;
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40005400 0x400>;
clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00200000>;
interrupts = <31 0>, <32 0>;
interrupt-names = "event", "error";
status = "disabled";
label= "I2C_1";
};
i2c2: i2c@40005800 {
compatible = "st,stm32-i2c-v2";
clock-frequency = <I2C_BITRATE_STANDARD>;
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40005800 0x400>;
clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00400000>;
interrupts = <33 0>, <34 0>;
interrupt-names = "event", "error";
status = "disabled";
label= "I2C_2";
};
i2c3: i2c@40007800 {
compatible = "st,stm32-i2c-v2";
clock-frequency = <I2C_BITRATE_STANDARD>;
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40007800 0x400>;
clocks = <&rcc STM32_CLOCK_BUS_APB1 0x40000000>;
interrupts = <92 0>, <93 0>;
interrupt-names = "event", "error";
status = "disabled";
label= "I2C_3";
};
}; };
}; };

7
soc/arm/st_stm32/stm32g4/Kconfig.defconfig.series
View file

@ -28,5 +28,12 @@ config GPIO_STM32_PORTF
config GPIO_STM32_PORTG config GPIO_STM32_PORTG
default y default y
if I2C_STM32
config I2C_STM32_V2
default y
endif # I2C_STM32
endif # GPIO_STM32 endif # GPIO_STM32
endif # SOC_SERIES_STM32G4X endif # SOC_SERIES_STM32G4X

30
soc/arm/st_stm32/stm32g4/dts_fixup.h
View file

@ -119,4 +119,34 @@
#define DT_FLASH_DEV_BASE_ADDRESS DT_ST_STM32G4_FLASH_CONTROLLER_40022000_BASE_ADDRESS #define DT_FLASH_DEV_BASE_ADDRESS DT_ST_STM32G4_FLASH_CONTROLLER_40022000_BASE_ADDRESS
#define DT_FLASH_DEV_NAME DT_ST_STM32G4_FLASH_CONTROLLER_40022000_LABEL #define DT_FLASH_DEV_NAME DT_ST_STM32G4_FLASH_CONTROLLER_40022000_LABEL
#define DT_I2C_1_BASE_ADDRESS DT_ST_STM32_I2C_V2_40005400_BASE_ADDRESS
#define DT_I2C_1_EVENT_IRQ_PRI DT_ST_STM32_I2C_V2_40005400_IRQ_EVENT_PRIORITY
#define DT_I2C_1_ERROR_IRQ_PRI DT_ST_STM32_I2C_V2_40005400_IRQ_ERROR_PRIORITY
#define CONFIG_I2C_1_NAME DT_ST_STM32_I2C_V2_40005400_LABEL
#define DT_I2C_1_EVENT_IRQ DT_ST_STM32_I2C_V2_40005400_IRQ_EVENT
#define DT_I2C_1_ERROR_IRQ DT_ST_STM32_I2C_V2_40005400_IRQ_ERROR
#define DT_I2C_1_BITRATE DT_ST_STM32_I2C_V2_40005400_CLOCK_FREQUENCY
#define DT_I2C_1_CLOCK_BITS DT_ST_STM32_I2C_V2_40005400_CLOCK_BITS
#define DT_I2C_1_CLOCK_BUS DT_ST_STM32_I2C_V2_40005400_CLOCK_BUS
#define DT_I2C_2_BASE_ADDRESS DT_ST_STM32_I2C_V2_40005800_BASE_ADDRESS
#define DT_I2C_2_EVENT_IRQ_PRI DT_ST_STM32_I2C_V2_40005800_IRQ_EVENT_PRIORITY
#define DT_I2C_2_ERROR_IRQ_PRI DT_ST_STM32_I2C_V2_40005800_IRQ_ERROR_PRIORITY
#define CONFIG_I2C_2_NAME DT_ST_STM32_I2C_V2_40005800_LABEL
#define DT_I2C_2_EVENT_IRQ DT_ST_STM32_I2C_V2_40005800_IRQ_EVENT
#define DT_I2C_2_ERROR_IRQ DT_ST_STM32_I2C_V2_40005800_IRQ_ERROR
#define DT_I2C_2_BITRATE DT_ST_STM32_I2C_V2_40005800_CLOCK_FREQUENCY
#define DT_I2C_2_CLOCK_BITS DT_ST_STM32_I2C_V2_40005800_CLOCK_BITS
#define DT_I2C_2_CLOCK_BUS DT_ST_STM32_I2C_V2_40005800_CLOCK_BUS
#define DT_I2C_3_BASE_ADDRESS DT_ST_STM32_I2C_V2_40007800_BASE_ADDRESS
#define DT_I2C_3_EVENT_IRQ_PRI DT_ST_STM32_I2C_V2_40007800_IRQ_EVENT_PRIORITY
#define DT_I2C_3_ERROR_IRQ_PRI DT_ST_STM32_I2C_V2_40007800_IRQ_ERROR_PRIORITY
#define CONFIG_I2C_3_NAME DT_ST_STM32_I2C_V2_40007800_LABEL
#define DT_I2C_3_EVENT_IRQ DT_ST_STM32_I2C_V2_40007800_IRQ_EVENT
#define DT_I2C_3_ERROR_IRQ DT_ST_STM32_I2C_V2_40007800_IRQ_ERROR
#define DT_I2C_3_BITRATE DT_ST_STM32_I2C_V2_40007800_CLOCK_FREQUENCY
#define DT_I2C_3_CLOCK_BITS DT_ST_STM32_I2C_V2_40007800_CLOCK_BITS
#define DT_I2C_3_CLOCK_BUS DT_ST_STM32_I2C_V2_40007800_CLOCK_BUS
/* End of SoC Level DTS fixup file */ /* End of SoC Level DTS fixup file */

4
soc/arm/st_stm32/stm32g4/soc.h
View file

@ -48,6 +48,10 @@
#include <stm32g4xx_ll_lpuart.h> #include <stm32g4xx_ll_lpuart.h>
#endif /* CONFIG_SERIAL_HAS_DRIVER */ #endif /* CONFIG_SERIAL_HAS_DRIVER */
#ifdef CONFIG_I2C
#include <stm32g4xx_ll_i2c.h>
#endif /* CONFIG_I2C */
#endif /* !_ASMLANGUAGE */ #endif /* !_ASMLANGUAGE */
#endif /* _STM32G4_SOC_H_ */ #endif /* _STM32G4_SOC_H_ */