[PATCH u-boot v2016.07-aspeed-openbmc] board: aspeed: Enable SGPIO in SCU

[Willy Tu]

Hi Joel,

Thanks for the update.

I have tested the change in v2016.07 to bring up a system for 2400 and
verified that it works fine. I'll fix the patch with git-send-email and
hopefully can get the change merged.

I'll take a look at v2019.04 to see where I can fit this in probably in
https://github.com/openbmc/u-boot/tree/v2019.04-aspeed-openbmc/board/aspeed?
I don't think we have a system to fully test the changes for 2500 and 2600
chips. I'll look through it.

Best,

Willy Tu


On Wed, Mar 31, 2021 at 3:51 PM Joel Stanley <joel at jms.id.au> wrote:

> Hi Willy,
>
> On Wed, 31 Mar 2021 at 21:33, Willy Tu <wltu at google.com> wrote:
> >
> > I am not exactly sure if this is the way to send the patch for u-boot.
> But I am trying to update a patch for
> https://github.com/openbmc/u-boot/tree/v2016.07-aspeed-openbmc.
> >
> > It just gives the options to have the u-boot enable the SGPIO registers
> for SCU.
>
> I strongly encourage you to bring up your new systems using a newer
> u-boot tree; ASPEED's v2019.04 based SDK contains support for the
> 2400, 2500 and 2600 chips.
>
> If you have already done the work to bring up v2016.07, I can merge
> your fix into the v2016.07 tree. However the patch you sent is
> corrupt. I recommend using git-send-email to send patches, as they
> preserve whitespace in a way our email clients do not.
>
> Cheers,
>
> Joel
>
> >
> > Please take a look.
> >
> > Best,
> >
> > Willy Tu
> >
> > On Wed, Mar 31, 2021 at 2:31 PM Willy Tu <wltu at google.com> wrote:
> >>
> >> From a2d7336bb59df8f2ef622d4369fc035b2aafd74c Mon Sep 17 00:00:00 2001
> >> From: Willy Tu <wltu at google.com>
> >> Date: Mon, 22 Mar 2021 17:01:56 -0700
> >> Subject: [PATCH] board: aspeed: Enable SGPIO in SCU
> >>
> >> Add option to enable register for SGPIO in SCU
> >>
> >> 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;
> >>  }
> >>
> >> --
> >> 2.31.0.208.g409f899ff0-goog
> >>
>
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