[PATCH] ARC: [plat-hsdk]: Increase SDIO CIU frequency to 50000000Hz

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Eugeniy,

On Wed, 2017-10-11 at 20:01 +0300, Eugeniy Paltsev wrote:
> With current SDIO CIU clock frequency (12500000Hz) DW MMC
> controller fails to initialize some SD cards (which don't
> support slow mode).
> 
> So increase SDIO CIU frequency from 12500000Hz to 50000000Hz by
> switching from the default divisor value (div-by-8) to the
> minimum possible value of the divisor (div-by-2) in HSDK platform
> code.
> 
> Reported-by: Vineet Gupta <vgupta at synopsys.com>
> Tested-by: Vineet Gupta <vgupta at synopsys.com>
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev at synopsys.com>

Given this change doesn't introduce any regressions
or at least so far we only saw 1 card started to work
(confirmed by Vineet) while cards we tried locally continue to work...

Acked-by: Alexey Brodkin <abrodkin at synopsys.com>


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux