Re: [RESEND PATCH] media: adv7180: increase delay after reset to 5ms

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

 



Hi Ulrich,

This fixes the problems I have seen on Koelsch.

* Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx> [2016-01-19 13:19:16 +0100]:

> Initialization of the ADV7180 chip fails on the Renesas R8A7790-based
> Lager board about 50% of the time.  This patch resolves the issue by
> increasing the minimum delay after reset from 2 ms to 5 ms, following the
> recommendation in the ADV7180 datasheet:
>
> "Executing a software reset takes approximately 2 ms. However, it is
> recommended to wait 5 ms before any further I2C writes are performed."
>
> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>
> Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Acked-by: Lars-Peter Clausen <lars@xxxxxxxxxx>

Tested-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>



[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