[PATCH] drm/i915/vlv: Add cdclk workaround for DSI

2017-12-20 Thread Hans de Goede
At least on the Chuwi Vi8 (non pro/plus) the LCD panel will show an image shifted aprox. 20% to the left (with wraparound) and sometimes also wrong colors, showing that the panel controller is starting with sampling the datastream somewhere mid-line. This happens after the first blanking and

Re: [PATCH] drm/i915/vlv: Add cdclk workaround for DSI

2017-12-19 Thread Rodrigo Vivi
On Tue, Dec 19, 2017 at 08:38:10PM +, Hans de Goede wrote: > Hi, > > On 19-12-17 20:42, Rodrigo Vivi wrote: > > > > On Tue, Dec 19, 2017 at 07:21:13PM +, Hans de Goede wrote: > > > At least on the Chuwi Vi8 (non pro/plus) the LCD panel will show an image > > > shifted aprox. 20% to the

Re: [PATCH] drm/i915/vlv: Add cdclk workaround for DSI

2017-12-19 Thread Hans de Goede
Hi, On 19-12-17 20:48, Ville Syrjälä wrote: On Tue, Dec 19, 2017 at 08:31:07PM +0100, Hans de Goede wrote: Hi, I forgot to add a coverletter, anyways what I wanted to put in the coverletter and not in the commit message is a link to a picture of the problem this fixes:

Re: [PATCH] drm/i915/vlv: Add cdclk workaround for DSI

2017-12-19 Thread Hans de Goede
Hi, On 19-12-17 20:42, Rodrigo Vivi wrote: On Tue, Dec 19, 2017 at 07:21:13PM +, Hans de Goede wrote: At least on the Chuwi Vi8 (non pro/plus) the LCD panel will show an image shifted aprox. 20% to the left (with wraparound) and sometimes also wrong colors, showing that the panel

Re: [PATCH] drm/i915/vlv: Add cdclk workaround for DSI

2017-12-19 Thread Rodrigo Vivi
On Tue, Dec 19, 2017 at 07:21:13PM +, Hans de Goede wrote: > At least on the Chuwi Vi8 (non pro/plus) the LCD panel will show an image > shifted aprox. 20% to the left (with wraparound) and sometimes also wrong > colors, showing that the panel controller is starting with sampling the >

Re: [PATCH] drm/i915/vlv: Add cdclk workaround for DSI

2017-12-19 Thread Hans de Goede
Hi, I forgot to add a coverletter, anyways what I wanted to put in the coverletter and not in the commit message is a link to a picture of the problem this fixes: https://fedorapeople.org/~jwrdegoede/IMG_20171217_195637.jpg Note the screen is actually a portrait screen, so the picture is the