[U-Boot] [PATCH] SMDK5250: Add ethernet support
Simon Glass
sjg at chromium.org
Tue Jan 24 17:19:50 CET 2012
Hi Chander,
On Tue, Jan 24, 2012 at 5:03 AM, Chander Kashyap
<chander.kashyap at linaro.org> wrote:
> This patch enable support for SMC911X based ethernet device.
>
> Signed-off-by: Chander Kashyap <chander.kashyap at linaro.org>
> ---
> board/samsung/smdk5250/smdk5250.c | 89 +++++++++++++++++++++++++++++++++++++
> include/configs/smdk5250.h | 13 +++++-
> 2 files changed, 100 insertions(+), 2 deletions(-)
>
> diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
> index 2684620..a1b1a48 100644
> --- a/board/samsung/smdk5250/smdk5250.c
> +++ b/board/samsung/smdk5250/smdk5250.c
> @@ -31,10 +31,95 @@
> DECLARE_GLOBAL_DATA_PTR;
> struct exynos5_gpio_part1 *gpio1;
>
> +static void smc9115_pre_init(void)
Is there a common place where this function could go, so that other
boards based on this SOC could use it also? Perhaps a
board/samsun/exynos5 common directory?
> +{
> + u32 smc_bw_conf, smc_bc_conf;
> + int i;
> +
> + /*
> + * SROM:CS1 and EBI
> + *
> + * GPY0[0] SROM_CSn[0]
> + * GPY0[1] SROM_CSn[1](2)
> + * GPY0[2] SROM_CSn[2]
> + * GPY0[3] SROM_CSn[3]
> + * GPY0[4] EBI_OEn(2)
> + * GPY0[5] EBI_EEn(2)
> + *
> + * GPY1[0] EBI_BEn[0](2)
> + * GPY1[1] EBI_BEn[1](2)
> + * GPY1[2] SROM_WAIT(2)
> + * GPY1[3] EBI_DATA_RDn(2)
> + */
> + s5p_gpio_cfg_pin(&gpio1->y0, CONFIG_ENV_SROM_BANK, GPIO_FUNC(2));
> + s5p_gpio_cfg_pin(&gpio1->y0, 4, GPIO_FUNC(2));
> + s5p_gpio_cfg_pin(&gpio1->y0, 5, GPIO_FUNC(2));
> +
> + for (i = 0; i < 4; i++)
> + s5p_gpio_cfg_pin(&gpio1->y1, i, GPIO_FUNC(2));
> +
> + /*
> + * EBI: 8 Addrss Lines
> + *
> + * GPY3[0] EBI_ADDR[0](2)
> + * GPY3[1] EBI_ADDR[1](2)
> + * GPY3[2] EBI_ADDR[2](2)
> + * GPY3[3] EBI_ADDR[3](2)
> + * GPY3[4] EBI_ADDR[4](2)
> + * GPY3[5] EBI_ADDR{5](2)
> + * GPY3[6] EBI_ADDR[6](2)
> + * GPY3[7] EBI_ADDR{7](2)
> + *
> + * EBI: 16 Data Lines
> + *
> + * GPY5[0] EBI_DATA[0](2)
> + * GPY5[1] EBI_DATA[1](2)
> + * GPY5[2] EBI_DATA[2](2)
> + * GPY5[3] EBI_DATA[3](2)
> + * GPY5[4] EBI_DATA[4](2)
> + * GPY5[5] EBI_DATA{5](2)
> + * GPY5[6] EBI_DATA[6](2)
> + * GPY5[7] EBI_DATA{7](2)
> + *
> + * GPY6[0] EBI_DATA[8](2)
> + * GPY6[1] EBI_DATA[9](2)
> + * GPY6[2] EBI_DATA[10](2)
> + * GPY6[3] EBI_DATA110](2)
> + * GPY6[4] EBI_DATA[12](2)
> + * GPY6[5] EBI_DATA{13](2)
> + * GPY6[6] EBI_DATA[14](2)
> + * GPY6[7] EBI_DATA{15](2)
> + */
> + for (i = 0; i < 8; i++) {
> + s5p_gpio_cfg_pin(&gpio1->y3, i, GPIO_FUNC(2));
> + s5p_gpio_set_pull(&gpio1->y3, i, GPIO_PULL_UP);
> +
> + s5p_gpio_cfg_pin(&gpio1->y5, i, GPIO_FUNC(2));
> + s5p_gpio_set_pull(&gpio1->y5, i, GPIO_PULL_UP);
> +
> + s5p_gpio_cfg_pin(&gpio1->y6, i, GPIO_FUNC(2));
> + s5p_gpio_set_pull(&gpio1->y6, i, GPIO_PULL_UP);
> + }
> +
> + /* Ethernet needs data bus width of 16 bits */
> + smc_bw_conf = SROMC_DATA16_WIDTH(CONFIG_ENV_SROM_BANK)
> + | SROMC_BYTE_ENABLE(CONFIG_ENV_SROM_BANK);
> +
> + smc_bc_conf = SROMC_BC_TACS(0x01) | SROMC_BC_TCOS(0x01)
> + | SROMC_BC_TACC(0x06) | SROMC_BC_TCOH(0x01)
> + | SROMC_BC_TAH(0x0C) | SROMC_BC_TACP(0x09)
> + | SROMC_BC_PMC(0x01);
> +
> + /* Select and configure the SROMC bank */
> + s5p_config_sromc(CONFIG_ENV_SROM_BANK, smc_bw_conf, smc_bc_conf);
> +}
> +
> int board_init(void)
> {
> gpio1 = (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
>
> + smc9115_pre_init();
Could this be done once later, in board_eth_init(), to avoid init of a
device which might not be used?
> +
> gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
> return 0;
> }
> @@ -79,6 +164,10 @@ void dram_init_banksize(void)
> gd->bd->bi_dram[7].size = get_ram_size((long *)PHYS_SDRAM_8, \
> PHYS_SDRAM_8_SIZE);
> }
> +int board_eth_init(bd_t *bis)
> +{
> + return smc911x_initialize(0, CONFIG_SMC911X_BASE);
> +}
>
> #ifdef CONFIG_DISPLAY_BOARDINFO
> int checkboard(void)
> diff --git a/include/configs/smdk5250.h b/include/configs/smdk5250.h
> index 6f2ef4c..4ad4bd2 100644
> --- a/include/configs/smdk5250.h
> +++ b/include/configs/smdk5250.h
> @@ -98,8 +98,7 @@
> #define CONFIG_CMD_MMC
> #define CONFIG_CMD_EXT2
> #define CONFIG_CMD_FAT
> -#undef CONFIG_CMD_NET
> -#undef CONFIG_CMD_NFS
> +#define CONFIG_CMD_NET
>
> #define CONFIG_BOOTDELAY 3
> #define CONFIG_ZERO_BOOTDELAY_CHECK
> @@ -196,6 +195,16 @@
> #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_LOAD_ADDR - 0x1000000)
> #define MMC_MAX_CHANNEL 5
>
> +/* Ethernet Controllor Driver */
> +#ifdef CONFIG_CMD_NET
> +#define CONFIG_NET_MULTI
> +#define CONFIG_SMC911X
> +#define CONFIG_SMC911X_BASE 0x5000000
> +#define CONFIG_SMC911X_16_BIT
> +#define CONFIG_ENV_SROM_BANK 1
> +#define CONFIG_ETHADDR "00:40:5c:26:0a:5b"
This should come from the ethaddr environment variable I think.
> +#endif /*CONFIG_CMD_NET*/
> +
> /* Enable devicetree support */
> #define CONFIG_OF_LIBFDT
>
> --
> 1.7.5.4
>
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Regards,
Simon
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