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

[Willy Tu]

I have sent out two patches 2016 and 2019 branches. For the 2019 branch, I
only added it for ast2400 as that is what Benjamin suggested.

Please let me know if the patches have not been sent out. Maybe I'll have
to try again.

Best,

Willy Tu

On Wed, Mar 31, 2021 at 4:31 PM Willy Tu <wltu at google.com> wrote:

> 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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