[U-Boot] [PATCH 2/2] odroid-c2: enable I2C

[Neil Armstrong <narmstrong@baylibre.com>]

Le 29/10/2017 10:09, Beniamino Galvani a écrit :
> Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
> ---
>  arch/arm/include/asm/arch-meson/gxbb.h | 1 +
>  board/amlogic/odroid-c2/odroid-c2.c    | 1 +
>  configs/odroid-c2_defconfig            | 3 +++
>  3 files changed, 5 insertions(+)
> 
> diff --git a/arch/arm/include/asm/arch-meson/gxbb.h b/arch/arm/include/asm/arch-meson/gxbb.h
> index ce41349792..96c9535f53 100644
> --- a/arch/arm/include/asm/arch-meson/gxbb.h
> +++ b/arch/arm/include/asm/arch-meson/gxbb.h
> @@ -44,6 +44,7 @@
>  #define GXBB_GCLK_MPEG_OTHER	GXBB_HIU_ADDR(0x53)
>  #define GXBB_GCLK_MPEG_AO	GXBB_HIU_ADDR(0x54)
>  
> +#define GXBB_GCLK_MPEG_0_I2C   BIT(9)
>  #define GXBB_GCLK_MPEG_1_ETH	BIT(3)
>  
>  #endif /* __GXBB_H__ */
> diff --git a/board/amlogic/odroid-c2/odroid-c2.c b/board/amlogic/odroid-c2/odroid-c2.c
> index eac04d8178..a5ea8dc5af 100644
> --- a/board/amlogic/odroid-c2/odroid-c2.c
> +++ b/board/amlogic/odroid-c2/odroid-c2.c
> @@ -35,6 +35,7 @@ int misc_init_r(void)
>  				     GXBB_ETH_REG_0_CLK_EN);
>  
>  	/* Enable power and clock gate */
> +	setbits_le32(GXBB_GCLK_MPEG_0, GXBB_GCLK_MPEG_0_I2C);

Hi Beniamino,

At some point, this should maybe be implemented as a (basic) clock driver to handle these gates.

Neil

>  	setbits_le32(GXBB_GCLK_MPEG_1, GXBB_GCLK_MPEG_1_ETH);
>  	clrbits_le32(GXBB_MEM_PD_REG_0, GXBB_MEM_PD_REG_0_ETH_MASK);
>  
> diff --git a/configs/odroid-c2_defconfig b/configs/odroid-c2_defconfig
> index f7f8016644..1afd2fc111 100644
> --- a/configs/odroid-c2_defconfig
> +++ b/configs/odroid-c2_defconfig
> @@ -11,12 +11,15 @@ CONFIG_DEBUG_UART=y
>  # CONFIG_CMD_IMI is not set
>  # CONFIG_CMD_FPGA is not set
>  CONFIG_CMD_GPIO=y
> +CONFIG_CMD_I2C=y
>  # CONFIG_CMD_LOADS is not set
>  CONFIG_CMD_MMC=y
>  # CONFIG_CMD_SETEXPR is not set
>  CONFIG_OF_CONTROL=y
>  CONFIG_NET_RANDOM_ETHADDR=y
>  CONFIG_DM_GPIO=y
> +CONFIG_DM_I2C=y
> +CONFIG_SYS_I2C_MESON=y
>  CONFIG_DM_MMC=y
>  CONFIG_MMC_MESON_GX=y
>  CONFIG_DM_ETH=y
>