[U-Boot] [PATCH v2 4/5] sun50i: A64: add support for R_I2C controller

Vasily Khoruzhick
2018-10-17T05:09:31Z

Allwinner A64 has a I2C controller, which is in the R_ MMIO zone and has
two groups of pinmuxes on PL bank, so it's called R_I2C.

Add support for this I2C controller and the pinmux which doesn't conflict
with RSB.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
---
arch/arm/include/asm/arch-sunxi/gpio.h | 1 +
arch/arm/mach-sunxi/Kconfig | 1 +
board/sunxi/board.c | 6 ++++++
3 files changed, 8 insertions(+)

diff --git a/arch/arm/include/asm/arch-sunxi/gpio.h b/arch/arm/include/asm/arch-sunxi/gpio.h
index 6a5eafc3d3..2daf23f6f5 100644
--- a/arch/arm/include/asm/arch-sunxi/gpio.h
+++ b/arch/arm/include/asm/arch-sunxi/gpio.h
@@ -211,6 +211,7 @@ enum sunxi_gpio_number {
#define SUN8I_H3_GPL_R_TWI 2
#define SUN8I_A23_GPL_R_TWI 3
#define SUN8I_GPL_R_UART 2
+#define SUN50I_GPL_R_TWI 2

#define SUN9I_GPN_R_RSB 3

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 686f38fec4..7ba429c744 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -272,6 +272,7 @@ config MACH_SUN50I
select ARM64
select DM_I2C
select PHY_SUN4I_USB
+ select SUN6I_PRCM
select SUNXI_DE2
select SUNXI_GEN_SUN6I
select SUPPORT_SPL
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index d1d7f9f400..90f8bc0a6e 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -168,10 +168,16 @@ void i2c_init_board(void)
#endif

#ifdef CONFIG_R_I2C_ENABLE
+#ifdef CONFIG_MACH_SUN50I
+ clock_twi_onoff(5, 1);
+ sunxi_gpio_set_cfgpin(SUNXI_GPL(8), SUN50I_GPL_R_TWI);
+ sunxi_gpio_set_cfgpin(SUNXI_GPL(9), SUN50I_GPL_R_TWI);
+#else
clock_twi_onoff(5, 1);
sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_H3_GPL_R_TWI);
sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_H3_GPL_R_TWI);
#endif
+#endif
}

#if defined(CONFIG_ENV_IS_IN_MMC) && defined(CONFIG_ENV_IS_IN_FAT)
--
2.19.0