On Thu, Nov 29, 2018 at 01:15:38AM +0100, Niklas Söderlund wrote: > The driver tries to figure out which state a SD clock is in when the > clock is register instead of setting a known state. This can be > problematic for two reasons. > > 1. If the clock driver can't figure out the state of the clock > registration of the clock fails and setting of a known state by a > clock user is not possible. > > 2. The state of the clock depends on if and how the bootloader > configured it. The driver only checks that the rate is known not if > the clock is stopped or not for example. > > Fix this by setting a known state and make sure the clock is stopped. > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> Tested on H3 ES1.0 and ES2.0, M3W ES1.0, and M3N with eMMC and UHS-SD cards. Proper clock speeds were selected and performance matches. Tested-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Acked-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
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