[U-Boot] [linux-sunxi] [PATCH] Revert "sunxi: board: Print error after power initialization fails"

Jagan Teki jagan at amarulasolutions.com
Sat Dec 29 18:53:49 UTC 2018


On Wed, Dec 19, 2018 at 6:32 PM Andre Przywara <andre.przywara at arm.com> wrote:
>
> From: "From: Karl Palsson" <karlp at tweak.net.au>
>
> Commit a8011eb84dfa("sunxi: board: Print error after power initialization
> fails") moved the DRAM init after the increase of the CPU clock
> frequency. This lead to various DRAM initialisation failures on some
> boards (hangs or wrong size reported, on a NanoPi Duo2 and OrangePi
> Zero, for instance). Lowering the CPU frequency significantly (for instance
> to 408 MHz) seems to work around the problem, so this points to some timing
> issues in the DRAM code.
>
> Debugging this sounds like a larger job, so let's just revert this patch
> to bring back those boards.
> Beside this probably unintended change the patch just moved the error
> message around, so reverting this is not a real loss.

Better mark this as TODO somewhere, may be some one look it later.

>
> This reverts commit a8011eb84dfac5187cebf00ed8bc981bdb5c1fa1.
>
> Tested-By: Priit Laes <plaes at plaes.org>
> Signed-off-by: Karl Palsson <karlp at tweak.net.au>
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>

Applied to u-boot-sunxi/master


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