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

[Willy Tu]

Thanks!

We have an old system using this branch and we don't plan on migrating the
u-boot version for it. We don't have any system that is using aspeed other
than this one.

Wily Tu

On Wed, May 26, 2021 at 7:03 PM Joel Stanley <joel at jms.id.au> wrote:

> On Wed, 26 May 2021 at 15:51, Willy Tu <wltu at google.com> wrote:
> >
> > 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>
>
> I've applied this, but I strongly encourage you to move to a newer
> branch. The 2019.04 branch is based off the latest aspeed SDK which
> claims support for the ast2400.
>
> >> ---
> >>  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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