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drivers: i2c: add STM32G0X I2C support

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Add I2C driver support for STM32G0X SoC series.

Signed-off-by: Filip Brozovic <fbrozovic@gmail.com>
This commit is contained in:
Filip Brozovic 2019-11-07 16:04:13 +01:00 • committed by Carles Cufí
commit fc2dfae64f
5 changed files with 56 additions and 3 deletions
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6
drivers/i2c/Kconfig.stm32
View file

@ -20,12 +20,12 @@ config I2C_STM32_V1
config I2C_STM32_V2
bool
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
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_STM32G0X || SOC_SERIES_STM32G4X
select USE_STM32_LL_I2C
select USE_STM32_LL_RCC if SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X
select I2C_STM32_INTERRUPT if I2C_SLAVE
help
Enable I2C support on the STM32 F0, F3, F7, L4, WBX, MP1 and G4 family of
Enable I2C support on the STM32 F0, F3, F7, L4, WBX, MP1, G0 and G4 family of
processors.
This driver also supports the L0 series.
If I2C_SLAVE is enabled it selects I2C_STM32_INTERRUPT, since slave mode
@ -40,6 +40,6 @@ config I2C_STM32_INTERRUPT
config I2C_STM32_COMBINED_INTERRUPT
bool
depends on I2C_STM32_INTERRUPT
default y if SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X
default y if SOC_SERIES_STM32F0X || SOC_SERIES_STM32G0X || SOC_SERIES_STM32L0X
endif # I2C_STM32

26
dts/arm/st/g0/stm32g0.dtsi
View file

@ -9,6 +9,7 @@
#include <arm/armv6-m.dtsi>
#include <dt-bindings/clock/stm32_clock.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/i2c/i2c.h>
/ {
cpus {
@ -147,6 +148,31 @@
};
};
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 = <23 0>;
interrupt-names = "combined";
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 = <24 0>;
interrupt-names = "combined";
status = "disabled";
label = "I2C_2";
};
};
};

7
soc/arm/st_stm32/stm32g0/Kconfig.defconfig.series
View file

@ -21,6 +21,13 @@ config GPIO_STM32_PORTD
config GPIO_STM32_PORTF
default y
if I2C_STM32
config I2C_STM32_V2
default y
endif # I2C_STM32
endif # GPIO_STM32
endif # SOC_SERIES_STM32G0X

16
soc/arm/st_stm32/stm32g0/dts_fixup.h
View file

@ -63,6 +63,22 @@
/* there is no reference to GPIOE, GPIOG and GPIOH in the dts files */
#define DT_I2C_1_BASE_ADDRESS DT_ST_STM32_I2C_V2_40005400_BASE_ADDRESS
#define DT_I2C_1_COMBINED_IRQ_PRI DT_ST_STM32_I2C_V2_40005400_IRQ_COMBINED_PRIORITY
#define DT_I2C_1_NAME DT_ST_STM32_I2C_V2_40005400_LABEL
#define DT_I2C_1_COMBINED_IRQ DT_ST_STM32_I2C_V2_40005400_IRQ_COMBINED
#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_COMBINED_IRQ_PRI DT_ST_STM32_I2C_V2_40005800_IRQ_COMBINED_PRIORITY
#define DT_I2C_2_NAME DT_ST_STM32_I2C_V2_40005800_LABEL
#define DT_I2C_2_COMBINED_IRQ DT_ST_STM32_I2C_V2_40005800_IRQ_COMBINED
#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_UART_STM32_USART_1_BASE_ADDRESS DT_ST_STM32_USART_40013800_BASE_ADDRESS
#define DT_UART_STM32_USART_1_BAUD_RATE DT_ST_STM32_USART_40013800_CURRENT_SPEED
#define DT_UART_STM32_USART_1_IRQ_PRI DT_ST_STM32_USART_40013800_IRQ_0_PRIORITY

4
soc/arm/st_stm32/stm32g0/soc.h
View file

@ -40,6 +40,10 @@
#include <stm32g0xx_ll_gpio.h>
#endif
#ifdef CONFIG_I2C
#include <stm32g0xx_ll_i2c.h>
#endif
#ifdef CONFIG_WWDG_STM32
#include <stm32g0xx_ll_wwdg.h>
#endif