Re: [PATCH v2 2/2] clk: renesas: rcar-gen3: add HS400 quirk for SD clock

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

 



On Thu, Nov 29, 2018 at 01:39:49AM +0100, Niklas Söderlund wrote:
> On H3 (ES1.x, ES2.0) and M3-W (ES1.0, ES1.1) the clock setting for HS400
> needs a quirk to function properly. The reason for the quirk is that
> there are two settings which produces same divider value for the SDn
> clock. On the effected boards the one currently selected results in
> HS400 not working.
> 
> This change uses the same method as the Gen2 CPG driver and simply
> ignores the first clock setting as this is the offending one when
> selecting the settings. Which of the two possible settings is used have
> no effect for SDR104.
> 
> 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>

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Linux Samsung SOC]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]

  Powered by Linux