Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Sun, Sep 06, 2015 at 11:59:08AM +0800, Yakir Yang wrote: > Hi Thierry, > > 在 09/03/2015 05:04 PM, Thierry Reding 写道: > >On Thu, Sep 03, 2015 at 12:27:47PM +0800, Yakir Yang wrote: > >>Hi Rob, > >> > >>在 09/03/2015 04:17 AM, Rob Herring 写道: > >>>On Tue, Sep 1, 2015 at 1:14 AM, Yakir Yang

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Fri, Sep 04, 2015 at 11:20:03AM +0100, Russell King - ARM Linux wrote: > On Thu, Sep 03, 2015 at 11:04:40AM +0200, Thierry Reding wrote: > > Conversely, if the panel isn't capable of generating an HPD signal, then > > I don't think it would be appropriate to make it a DT property. It would > >

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

Hi Rob, 在 09/05/2015 05:46 AM, Rob Herring 写道: On Wed, Sep 2, 2015 at 11:27 PM, Yakir Yang wrote: Hi Rob, 在 09/03/2015 04:17 AM, Rob Herring 写道: On Tue, Sep 1, 2015 at 1:14 AM, Yakir Yang wrote: Some edp screen do not have hpd signal, so we can't

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Thu, Sep 03, 2015 at 11:04:40AM +0200, Thierry Reding wrote: > Conversely, if the panel isn't capable of generating an HPD signal, then > I don't think it would be appropriate to make it a DT property. It would > be better to hard-code it in the driver, lest someone forget to set the > property

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Thu, Sep 03, 2015 at 04:55:59PM -0500, Rob Herring wrote: > On Thu, Sep 3, 2015 at 3:47 AM, Thierry Reding wrote: > > On Wed, Sep 02, 2015 at 03:17:57PM -0500, Rob Herring wrote: > > [...] > >> Are there any eDP panels which don't have EDID and need panel details in > >>

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Wed, Sep 2, 2015 at 11:27 PM, Yakir Yang wrote: > Hi Rob, > > 在 09/03/2015 04:17 AM, Rob Herring 写道: >> >> On Tue, Sep 1, 2015 at 1:14 AM, Yakir Yang wrote: >>> >>> Some edp screen do not have hpd signal, so we can't just return >>> failed when hpd

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Thu, Sep 3, 2015 at 3:47 AM, Thierry Reding wrote: > On Wed, Sep 02, 2015 at 03:17:57PM -0500, Rob Herring wrote: > [...] >> Are there any eDP panels which don't have EDID and need panel details in DT? > > Most panels need information other than EDID. They typically have

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Wed, Sep 02, 2015 at 03:17:57PM -0500, Rob Herring wrote: [...] > Are there any eDP panels which don't have EDID and need panel details in DT? Most panels need information other than EDID. They typically have some requirements regarding the power up sequence that aren't to be found anywhere in

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Thu, Sep 03, 2015 at 12:27:47PM +0800, Yakir Yang wrote: > Hi Rob, > > 在 09/03/2015 04:17 AM, Rob Herring 写道: > >On Tue, Sep 1, 2015 at 1:14 AM, Yakir Yang wrote: > >>Some edp screen do not have hpd signal, so we can't just return > >>failed when hpd plug in detect

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

Hi Rob, 在 09/03/2015 04:17 AM, Rob Herring 写道: On Tue, Sep 1, 2015 at 1:14 AM, Yakir Yang wrote: Some edp screen do not have hpd signal, so we can't just return failed when hpd plug in detect failed. This is a property of the panel (or connector perhaps), so this

Re: [PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

On Tue, Sep 1, 2015 at 1:14 AM, Yakir Yang wrote: > Some edp screen do not have hpd signal, so we can't just return > failed when hpd plug in detect failed. This is a property of the panel (or connector perhaps), so this property should be located there. At least, it is a

[PATCH v4 14/16] drm: bridge: analogix/dp: try force hpd after plug in lookup failed

Some edp screen do not have hpd signal, so we can't just return failed when hpd plug in detect failed. This is an hardware property, so we need add a devicetree property "analogix,need-force-hpd" to indicate this sutiation. Signed-off-by: Yakir Yang --- Changes in v4: None