Re: [PATCH 6/6] drm/bridge: adv7511: Re-write the i2c address before EDID probing

2017-01-18 Thread Laurent Pinchart
Hi John, Thank you for the patch. On Monday 16 Jan 2017 16:52:52 John Stultz wrote: > I've found that by just turning the chip on and off via the > POWER_DOWN register, I end up getting i2c_transfer errors on > HiKey. > > Investigating further, it seems some of the register state in > the regmap

[PATCH 6/6] drm/bridge: adv7511: Re-write the i2c address before EDID probing

2017-01-16 Thread John Stultz
I've found that by just turning the chip on and off via the POWER_DOWN register, I end up getting i2c_transfer errors on HiKey. Investigating further, it seems some of the register state in the regmap cache is getting lost, likely as the device registers were reset during power off. Thus this pat