[PATCH] board: ast-g4: Enable SGPIO in SCU

[Willy Tu]

ping.

I also missed the branch for this patch, but this should be in
the v2016.07-aspeed-openbmc u-boot branch.

On Tue, Apr 13, 2021 at 9:12 AM Willy Tu <wltu at google.com> wrote:

> Add option to enable register for SGPIO in SCU
> for ast-g4.
>
> Signed-off-by: Willy Tu <wltu at google.com>
> ---
>  board/aspeed/ast-g4/Kconfig  |  4 ++++
>  board/aspeed/ast-g4/ast-g4.c | 13 +++++++++++++
>  2 files changed, 17 insertions(+)
>
> diff --git a/board/aspeed/ast-g4/Kconfig b/board/aspeed/ast-g4/Kconfig
> index 2bec9a733a..e78030ae34 100644
> --- a/board/aspeed/ast-g4/Kconfig
> +++ b/board/aspeed/ast-g4/Kconfig
> @@ -19,4 +19,8 @@ config SYS_CONFIG_NAME
>         default "ast-g4-phy" if ASPEED_NET_PHY
>         default "ast-g4-ncsi" if ASPEED_NET_NCSI
>
> +config ENABLE_SGPIO
> +    tristate "Enable SGPIO in SCU"
> +       default n
> +
>  endif
> diff --git a/board/aspeed/ast-g4/ast-g4.c b/board/aspeed/ast-g4/ast-g4.c
> index 656495307b..e2463d4524 100644
> --- a/board/aspeed/ast-g4/ast-g4.c
> +++ b/board/aspeed/ast-g4/ast-g4.c
> @@ -22,6 +22,19 @@ int board_init(void)
>         /* address of boot parameters */
>         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
>         gd->flags = 0;
> +
> +#ifdef CONFIG_ENABLE_SGPIO
> +       /* Unlock SCU */
> +       writel(SCU_PROTECT_UNLOCK, AST_SCU_BASE);
> +
> +       /* Enable SGPIO Master */
> +       u32 reg = readl(AST_SCU_BASE + AST_SCU_FUN_PIN_CTRL2);
> +       reg |= (SCU_FUN_PIN_SGPMI |
> +                       SCU_FUN_PIN_SGPMO |
> +                       SCU_FUN_PIN_SGPMLD |
> +                       SCU_FUN_PIN_SGPMCK);
> +       writel(reg, AST_SCU_BASE + AST_SCU_FUN_PIN_CTRL2);
> +#endif
>         return 0;
>  }
>
> --
> 2.31.1.295.g9ea45b61b8-goog
>
>
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