On Wed, Feb 20, 2019 at 12:19:22PM +0100, Marek Szyprowski wrote:
> The maximum voltage value for BUCK8 regulator on Odroid XU3/4 boards is
> set too low. Increase it to the 2000mV as specified on the board schematic.
> So far the board worked fine, because of the bug in the PMIC driver, which
> used incorrect step value for that regulator. It interpreted the voltage
> value set by the bootloader as 1500mV and kept it unchanged. The regulator
> driver has been however fixed recently in the commit 56b5d4ea778c
> ("regulator: s2mps11: Fix steps for buck7, buck8 and LDO35"), what results
> in reading the proper BUCK8 value and forcing it to 1500mV on boot. This
> is not enough for proper board operation and results in eMMC errors during
> heavy IO traffic. Increasing maximum voltage value for BUCK8 restores
> original driver behavior and fixes eMMC issues.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 2 +-
Thanks, applied. However Arnd pulled today already my second pull so I
will send it as fixes for v5.1. The next will be fine starting from
tomorrow, but v5.1-rc1 will be affected.
Best regards,
Krzysztof
