On Sun, Apr 3, 2016 at 2:18 AM, Beniamino Galvani <b.galv...@gmail.com> wrote:
> Add initialization code for the Ethernet adapter on ODROID-C2 and
> enable the driver.
>
> Signed-off-by: Beniamino Galvani <b.galv...@gmail.com>
> ---
> arch/arm/include/asm/arch-meson/gxbb.h | 54
> ++++++++++++++++++++++++++++++++++
> board/hardkernel/odroid-c2/odroid-c2.c | 25 ++++++++++++++++
> configs/odroid-c2_defconfig | 3 ++
> include/configs/odroid-c2.h | 1 +
> 4 files changed, 83 insertions(+)
>
> diff --git a/arch/arm/include/asm/arch-meson/gxbb.h
> b/arch/arm/include/asm/arch-meson/gxbb.h
> index 0eec270..59fae9f 100644
> --- a/arch/arm/include/asm/arch-meson/gxbb.h
> +++ b/arch/arm/include/asm/arch-meson/gxbb.h
> @@ -7,4 +7,58 @@
> #ifndef __GXBB_H__
> #define __GXBB_H__
>
> +#define GXBB_PERIPHS_BASE 0xc8834400
> +#define GXBB_PERIPHS_ADDR(off) (GXBB_PERIPHS_BASE + ((off) << 2))
> +
> +#define GXBB_GPIO_0_EN GXBB_PERIPHS_ADDR(0x0c)
> +#define GXBB_GPIO_0_OUT GXBB_PERIPHS_ADDR(0x0d)
> +#define GXBB_GPIO_0_IN GXBB_PERIPHS_ADDR(0x0e)
> +#define GXBB_GPIO_1_EN GXBB_PERIPHS_ADDR(0x0f)
> +#define GXBB_GPIO_1_OUT GXBB_PERIPHS_ADDR(0x10)
> +#define GXBB_GPIO_1_IN GXBB_PERIPHS_ADDR(0x11)
> +#define GXBB_GPIO_2_EN GXBB_PERIPHS_ADDR(0x12)
> +#define GXBB_GPIO_2_OUT GXBB_PERIPHS_ADDR(0x13)
> +#define GXBB_GPIO_2_IN GXBB_PERIPHS_ADDR(0x14)
> +#define GXBB_GPIO_3_EN GXBB_PERIPHS_ADDR(0x15)
> +#define GXBB_GPIO_3_OUT GXBB_PERIPHS_ADDR(0x16)
> +#define GXBB_GPIO_3_IN GXBB_PERIPHS_ADDR(0x17)
> +#define GXBB_GPIO_4_EN GXBB_PERIPHS_ADDR(0x18)
> +#define GXBB_GPIO_4_OUT GXBB_PERIPHS_ADDR(0x19)
> +#define GXBB_GPIO_4_IN GXBB_PERIPHS_ADDR(0x1a)
> +#define GXBB_GPIO_5_EN GXBB_PERIPHS_ADDR(0x1b)
> +#define GXBB_GPIO_5_OUT GXBB_PERIPHS_ADDR(0x1c)
> +#define GXBB_GPIO_5_IN GXBB_PERIPHS_ADDR(0x1d)
> +#define GXBB_GPIO_6_EN GXBB_PERIPHS_ADDR(0x08)
> +#define GXBB_GPIO_6_OUT GXBB_PERIPHS_ADDR(0x09)
> +#define GXBB_GPIO_6_IN GXBB_PERIPHS_ADDR(0x0a)
> +
> +#define GXBB_PINMUX_0 GXBB_PERIPHS_ADDR(0x2c)
> +#define GXBB_PINMUX_1 GXBB_PERIPHS_ADDR(0x2d)
> +#define GXBB_PINMUX_2 GXBB_PERIPHS_ADDR(0x2e)
> +#define GXBB_PINMUX_3 GXBB_PERIPHS_ADDR(0x2f)
> +#define GXBB_PINMUX_4 GXBB_PERIPHS_ADDR(0x30)
> +#define GXBB_PINMUX_5 GXBB_PERIPHS_ADDR(0x31)
> +#define GXBB_PINMUX_6 GXBB_PERIPHS_ADDR(0x32)
> +#define GXBB_PINMUX_7 GXBB_PERIPHS_ADDR(0x33)
> +#define GXBB_PINMUX_8 GXBB_PERIPHS_ADDR(0x34)
> +#define GXBB_PINMUX_9 GXBB_PERIPHS_ADDR(0x35)
> +#define GXBB_PINMUX_10 GXBB_PERIPHS_ADDR(0x36)
> +#define GXBB_PINMUX_11 GXBB_PERIPHS_ADDR(0x37)
> +#define GXBB_PINMUX_12 GXBB_PERIPHS_ADDR(0x38)
> +
> +#define GXBB_ETH_REG_0 GXBB_PERIPHS_ADDR(0x50)
> +#define GXBB_ETH_REG_1 GXBB_PERIPHS_ADDR(0x51)
> +
> +#define GXBB_HIU_BASE 0xc883c000
> +#define GXBB_HIU_ADDR(off) (GXBB_HIU_BASE + ((off) << 2))
> +
> +#define GXBB_MEM_PD_REG_0 GXBB_HIU_ADDR(0x40)
> +
> +/* Clock gates */
> +#define GXBB_GCLK_MPEG_0 GXBB_HIU_ADDR(0x50)
> +#define GXBB_GCLK_MPEG_1 GXBB_HIU_ADDR(0x51)
> +#define GXBB_GCLK_MPEG_2 GXBB_HIU_ADDR(0x52)
> +#define GXBB_GCLK_MPEG_OTHER GXBB_HIU_ADDR(0x53)
> +#define GXBB_GCLK_MPEG_AO GXBB_HIU_ADDR(0x54)
> +
> #endif /* __GXBB_H__ */
> diff --git a/board/hardkernel/odroid-c2/odroid-c2.c
> b/board/hardkernel/odroid-c2/odroid-c2.c
> index 6a1485f..2d82d11 100644
> --- a/board/hardkernel/odroid-c2/odroid-c2.c
> +++ b/board/hardkernel/odroid-c2/odroid-c2.c
> @@ -5,3 +5,28 @@
> */
>
> #include <common.h>
> +#include <asm/io.h>
> +#include <asm/arch/gxbb.h>
> +
> +#ifdef CONFIG_MISC_INIT_R
> +int misc_init_r(void)
> +{
> + /* Select Ethernet function */
> + setbits_le32(GXBB_PINMUX_6, 0x3fff);
> +
> + /* Set RGMII mode */
> + setbits_le32(GXBB_ETH_REG_0, 0x1621);
It would be good to have constants for all these magic numbers.
> +
> + /* Enable clocks */
> + setbits_le32(GXBB_GCLK_MPEG_1, 1 << 3);
Use the BIT() macro for this type of thing. Probably use the BIT()
macro in another named macro for the meaning of the magic bit.
> + clrbits_le32(GXBB_MEM_PD_REG_0, (1 << 3) | (1 << 2));
> +
> + /* Reset PHY on GPIOZ_14 */
> + clrbits_le32(GXBB_GPIO_3_EN, 1 << 14);
> + clrbits_le32(GXBB_GPIO_3_OUT, 1 << 14);
> + udelay(100000);
> + setbits_le32(GXBB_GPIO_3_OUT, 1 << 14);
> +
> + return 0;
> +}
> +#endif /* CONFIG_MISC_INIT_R */
> diff --git a/configs/odroid-c2_defconfig b/configs/odroid-c2_defconfig
> index 069f02d..a771b20 100644
> --- a/configs/odroid-c2_defconfig
> +++ b/configs/odroid-c2_defconfig
> @@ -11,6 +11,9 @@ CONFIG_DEFAULT_DEVICE_TREE="meson-gxbb-odroidc2"
> # CONFIG_CMD_SOURCE is not set
> # CONFIG_CMD_SETEXPR is not set
> CONFIG_OF_CONTROL=y
> +CONFIG_NET_RANDOM_ETHADDR=y
> +CONFIG_DM_ETH=y
> +CONFIG_ETH_DESIGNWARE=y
> CONFIG_DEBUG_UART=y
> CONFIG_DEBUG_UART_MESON=y
> CONFIG_DEBUG_UART_BASE=0xc81004c0
> diff --git a/include/configs/odroid-c2.h b/include/configs/odroid-c2.h
> index 0e9ad1c..12bc086 100644
> --- a/include/configs/odroid-c2.h
> +++ b/include/configs/odroid-c2.h
> @@ -19,6 +19,7 @@
> #define CONFIG_SYS_MALLOC_LEN (32 << 20)
> #define CONFIG_SYS_CBSIZE 1024
> #define CONFIG_DISPLAY_BOARDINFO
> +#define CONFIG_MISC_INIT_R
>
> #define CONFIG_SYS_SDRAM_BASE 0
> #define CONFIG_SYS_TEXT_BASE 0x01000000
> --
> 2.7.3
>
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