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sunxi: board: Add i2c initialization for sun50i

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To use TWI0/1/2 the user can select CONFIG_I2C#_ENABLE.
However even the controller is enabled, the mux for the pins
are not set.

This patch follows the existing mux method. Since the pads are
different, separate check is added for each i2c.

Tested with A64-SOM204 board.

Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This commit is contained in:
Stefan Mavrodiev
2019-01-08 12:04:30 +02:00
committed by Jagan Teki
parent 4b65607759
commit 1050e7ab52
2 changed files with 15 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/include/asm/arch-sunxi/gpio.h
View File

@ -176,6 +176,7 @@ enum sunxi_gpio_number {
#define SUN5I_GPE_SDC2 3
#define SUN8I_GPE_TWI2 3
#define SUN50I_GPE_TWI2 3
#define SUNXI_GPF_SDC0 2
#define SUNXI_GPF_UART0 4
@ -193,8 +194,10 @@ enum sunxi_gpio_number {
#define SUN4I_GPH_SDC1 5
#define SUN6I_GPH_TWI0 2
#define SUN8I_GPH_TWI0 2
#define SUN50I_GPH_TWI0 2
#define SUN6I_GPH_TWI1 2
#define SUN8I_GPH_TWI1 2
#define SUN50I_GPH_TWI1 2
#define SUN6I_GPH_TWI2 2
#define SUN6I_GPH_UART0 2
#define SUN9I_GPH_UART0 2

12
board/sunxi/board.c
View File

@ -98,6 +98,10 @@ void i2c_init_board(void)
sunxi_gpio_set_cfgpin(SUNXI_GPH(2), SUN8I_GPH_TWI0);
sunxi_gpio_set_cfgpin(SUNXI_GPH(3), SUN8I_GPH_TWI0);
clock_twi_onoff(0, 1);
#elif defined(CONFIG_MACH_SUN50I)
sunxi_gpio_set_cfgpin(SUNXI_GPH(0), SUN50I_GPH_TWI0);
sunxi_gpio_set_cfgpin(SUNXI_GPH(1), SUN50I_GPH_TWI0);
clock_twi_onoff(0, 1);
#endif
#endif
@ -120,6 +124,10 @@ void i2c_init_board(void)
sunxi_gpio_set_cfgpin(SUNXI_GPH(4), SUN8I_GPH_TWI1);
sunxi_gpio_set_cfgpin(SUNXI_GPH(5), SUN8I_GPH_TWI1);
clock_twi_onoff(1, 1);
#elif defined(CONFIG_MACH_SUN50I)
sunxi_gpio_set_cfgpin(SUNXI_GPH(2), SUN50I_GPH_TWI1);
sunxi_gpio_set_cfgpin(SUNXI_GPH(3), SUN50I_GPH_TWI1);
clock_twi_onoff(1, 1);
#endif
#endif
@ -142,6 +150,10 @@ void i2c_init_board(void)
sunxi_gpio_set_cfgpin(SUNXI_GPE(12), SUN8I_GPE_TWI2);
sunxi_gpio_set_cfgpin(SUNXI_GPE(13), SUN8I_GPE_TWI2);
clock_twi_onoff(2, 1);
#elif defined(CONFIG_MACH_SUN50I)
sunxi_gpio_set_cfgpin(SUNXI_GPE(14), SUN50I_GPE_TWI2);
sunxi_gpio_set_cfgpin(SUNXI_GPE(15), SUN50I_GPE_TWI2);
clock_twi_onoff(2, 1);
#endif
#endif