Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-09-02 Thread Doug Anderson
Hi, On Tue, Jul 14, 2020 at 8:31 AM Doug Anderson wrote: > > > Hopefully BOE gets back to you soon, and there's no rush, I'm just an > > end user who is extremely appreciative of all the work everyone on the > > list and the kernel in general put in to make my machines usable. > > Just FYI that

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-14 Thread Doug Anderson
Hi, On Fri, Jul 10, 2020 at 10:11 AM Steev Klimaszewski wrote: > > > On 7/10/20 9:47 AM, Doug Anderson wrote: > > Hi, > > > > > > But should I continue on this path, > > It's probably worth getting dithering working on your sdm845 anyway in > > case anyone actually does put a 6bpp panel on this

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-14 Thread Steev Klimaszewski
On 7/10/20 9:47 AM, Doug Anderson wrote: > Hi, > > > But should I continue on this path, > It's probably worth getting dithering working on your sdm845 anyway in > case anyone actually does put a 6bpp panel on this SoC. > > >> or should we be finding others who >> have an N61 and see what their

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-10 Thread Doug Anderson
Hi, On Thu, Jul 9, 2020 at 11:15 PM Steev Klimaszewski wrote: > > Hi, > > On 7/9/20 11:12 PM, Doug Anderson wrote: > >> root@c630:~# bus=$(i2cdetect -l | grep sn65 | sed > >> 's/i2c-\([0-9]*\).*$/\1/') > >> root@c630:~# i2cdump ${bus} 0x50 i > edid > >> WARNING! This program can confuse your

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-10 Thread Rob Clark
On Thu, Jul 9, 2020 at 11:15 PM Steev Klimaszewski wrote: > > Hi, > > On 7/9/20 11:12 PM, Doug Anderson wrote: > >> root@c630:~# bus=$(i2cdetect -l | grep sn65 | sed > >> 's/i2c-\([0-9]*\).*$/\1/') > >> root@c630:~# i2cdump ${bus} 0x50 i > edid > >> WARNING! This program can confuse your I2C

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-10 Thread Steev Klimaszewski
On 7/9/20 10:17 PM, Steev Klimaszewski wrote: On 7/9/20 10:12 PM, Steev Klimaszewski wrote: On 7/9/20 9:14 PM, Doug Anderson wrote: Hi, On Thu, Jul 9, 2020 at 6:38 PM Doug Anderson wrote: Hi, On Thu, Jul 9, 2020 at 6:19 PM Steev Klimaszewski wrote: Hi Doug, I've been testing 5.8

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-10 Thread Steev Klimaszewski
Hi, On 7/9/20 11:12 PM, Doug Anderson wrote: root@c630:~# bus=$(i2cdetect -l | grep sn65 | sed 's/i2c-\([0-9]*\).*$/\1/') root@c630:~# i2cdump ${bus} 0x50 i > edid WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-16, address 0x50, mode i2c

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-10 Thread Steev Klimaszewski
On 7/9/20 10:12 PM, Steev Klimaszewski wrote: On 7/9/20 9:14 PM, Doug Anderson wrote: Hi, On Thu, Jul 9, 2020 at 6:38 PM Doug Anderson wrote: Hi, On Thu, Jul 9, 2020 at 6:19 PM Steev Klimaszewski wrote: Hi Doug, I've been testing 5.8 and linux-next on the Lenovo Yoga C630, and with

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-10 Thread Steev Klimaszewski
On 7/9/20 9:14 PM, Doug Anderson wrote: Hi, On Thu, Jul 9, 2020 at 6:38 PM Doug Anderson wrote: Hi, On Thu, Jul 9, 2020 at 6:19 PM Steev Klimaszewski wrote: Hi Doug, I've been testing 5.8 and linux-next on the Lenovo Yoga C630, and with this patch applied, there is really bad banding

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-09 Thread Doug Anderson
Hi, On Thu, Jul 9, 2020 at 8:43 PM Steev Klimaszewski wrote: > > > On 7/9/20 10:17 PM, Steev Klimaszewski wrote: > > > > On 7/9/20 10:12 PM, Steev Klimaszewski wrote: > >> > >> On 7/9/20 9:14 PM, Doug Anderson wrote: > >>> Hi, > >>> > >>> On Thu, Jul 9, 2020 at 6:38 PM Doug Anderson > >>>

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-09 Thread Doug Anderson
Hi, On Thu, Jul 9, 2020 at 6:38 PM Doug Anderson wrote: > > Hi, > > On Thu, Jul 9, 2020 at 6:19 PM Steev Klimaszewski wrote: > > > > Hi Doug, > > > > I've been testing 5.8 and linux-next on the Lenovo Yoga C630, and with this > > patch applied, there is really bad banding on the display. > > >

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-07-09 Thread Doug Anderson
Hi, On Thu, Jul 9, 2020 at 6:19 PM Steev Klimaszewski wrote: > > Hi Doug, > > I've been testing 5.8 and linux-next on the Lenovo Yoga C630, and with this > patch applied, there is really bad banding on the display. > > I'm really bad at explaining it, but you can see the differences in the >

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-02-13 Thread Neil Armstrong
Hi, On 13/02/2020 00:04, Doug Anderson wrote: > Andrzej / Neil, > > On Mon, Feb 3, 2020 at 4:21 PM Doug Anderson wrote: >> >> Andrzej / Neil, >> >> On Mon, Feb 3, 2020 at 3:37 PM Bjorn Andersson >> wrote: >>> >>> On Wed 18 Dec 14:35 PST 2019, Douglas Anderson wrote: >>> The current bridge

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-02-12 Thread Doug Anderson
Andrzej / Neil, On Mon, Feb 3, 2020 at 4:21 PM Doug Anderson wrote: > > Andrzej / Neil, > > On Mon, Feb 3, 2020 at 3:37 PM Bjorn Andersson > wrote: > > > > On Wed 18 Dec 14:35 PST 2019, Douglas Anderson wrote: > > > > > The current bridge driver always forced us to use 24 bits per pixel > > >

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-02-04 Thread Bjorn Andersson
On Wed 18 Dec 14:35 PST 2019, Douglas Anderson wrote: > The current bridge driver always forced us to use 24 bits per pixel > over the DP link. This is a waste if you are hooked up to a panel > that only supports 6 bits per color or fewer, since in that case you > ran run at 18 bits per pixel

Re: [PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2020-02-03 Thread Doug Anderson
Andrzej / Neil, On Mon, Feb 3, 2020 at 3:37 PM Bjorn Andersson wrote: > > On Wed 18 Dec 14:35 PST 2019, Douglas Anderson wrote: > > > The current bridge driver always forced us to use 24 bits per pixel > > over the DP link. This is a waste if you are hooked up to a panel > > that only supports

[PATCH v3 6/9] drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can

2019-12-18 Thread Douglas Anderson
The current bridge driver always forced us to use 24 bits per pixel over the DP link. This is a waste if you are hooked up to a panel that only supports 6 bits per color or fewer, since in that case you ran run at 18 bits per pixel and thus end up at a lower DP clock rate. Let's support this.