Re: [PATCH] omapfb: dss: Fix max fclk divider for omap36xx

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

 



On 04/08/2020 16:13, Adam Ford wrote:
> 
> 
> On Thu, Jul 9, 2020 at 7:12 AM Adam Ford <aford173@xxxxxxxxx <mailto:aford173@xxxxxxxxx>> wrote:
> 
>     There appears to be a timing issue where using a divider of 32 breaks
>     the DSS for OMAP36xx despite the TRM stating 32 is a valid
>     number.  Through experimentation, it appears that 31 works.
> 
>     This same fix was issued for kernels 4.5+.  However, between
>     kernels 4.4 and 4.5, the directory structure was changed when the
>     dss directory was moved inside the omapfb directory. That broke the
>     patch on kernels older than 4.5, because it didn't permit the patch
>     to apply cleanly for 4.4 and older.
> 
>     A similar patch was applied to the 3.16 kernel already, but not to 4.4.
>     Commit 4b911101a5cd ("drm/omap: fix max fclk divider for omap36xx") is
>     on the 3.16 stable branch with notes from Ben about the path change.
> 
>     Since this was applied for 3.16 already, this patch is for kernels
>     3.17 through 4.4 only.
> 
>     Fixes: f7018c213502 ("video: move fbdev to drivers/video/fbdev")
> 
>     Cc: <stable@xxxxxxxxxxxxxxx <mailto:stable@xxxxxxxxxxxxxxx>> #3.17 - 4.4
>     CC: <tomi.valkeinen@xxxxxx <mailto:tomi.valkeinen@xxxxxx>>
>     Signed-off-by: Adam Ford <aford173@xxxxxxxxx <mailto:aford173@xxxxxxxxx>>
> 
> 
> Tomi,
> 
> Can you comment on this?  The 4.4 is still waiting for this fix.  The other branches are fixed.

Looks good to me.

Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>

 Tomi

-- 
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux