[U-Boot] [PATCH v2] rockchip: sdram: Fix register layout for Linux

Simon Glass sjg at chromium.org
Mon Jul 18 14:20:20 CEST 2016


On 17 July 2016 at 08:13, Simon Glass <sjg at chromium.org> wrote:
> On 15 July 2016 at 10:33, John Keeping <john at metanate.com> wrote:
>> The ChromeOS kernel reads the RAM settings from PMU_SYS_REG2 and expects
>> the bootloader to store the necessary information there.  We're using
>> the same register to pass the same information between the SPL and
>> U-Boot but in a slightly different format.
>>
>> Change this to use the format expected by the Linux DMC driver so that
>> the system doesn't hang in Linux by misconfiguring the RAM.
>>
>> This is almost the same as commit b5788dc ("rockchip: rk3288: correct
>> sdram setting") which was reverted in commit b525556 ("Revert "rockchip:
>> rk3288: correct sdram setting"") but parenthese have been added to apply
>> the mask correctly when reading the "bw" setting and a couple of minor
>> style issues have been fixed to keep check_patch.pl happy.
>>
>> Signed-off-by: John Keeping <john at metanate.com>
>>
>> ---
>>
>> Changes in v2:
>> - Reword the commit message to not be "Revert: Revert: ..."
>>
>>  arch/arm/mach-rockchip/rk3288/sdram_rk3288.c | 14 +++++++-------
>>  1 file changed, 7 insertions(+), 7 deletions(-)
>
> Acked-by: Simon Glass <sjg at chromium.org>

Applied to u-boot-rockchip, thanks!


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