[PATCH] drm/sun4i: Add missing frontend compatibles for A10, A13, A20 and A31

[PATCH] drm/sun4i: Add missing frontend compatibles for A10, A13, A20 and A31

[Paul Kocialkowski]

Although frontend nodes are defined in the device-trees of the
aforementioned platforms, there are no matching compatibles defined in
the driver. This makes it impossible to probe the frontend on these
platforms.

Adding the appropriate compatibles to the driver fixes the issue.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
 drivers/gpu/drm/sun4i/sun4i_frontend.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c
index 85f75046712c..c5a3de11817d 100644
--- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
@@ -658,6 +658,10 @@ static const struct dev_pm_ops sun4i_frontend_pm_ops = {
 };
 
 const struct of_device_id sun4i_frontend_of_table[] = {
+	{ .compatible = "allwinner,sun7i-a10-display-frontend" },
+	{ .compatible = "allwinner,sun7i-a13-display-frontend" },
+	{ .compatible = "allwinner,sun7i-a20-display-frontend" },
+	{ .compatible = "allwinner,sun7i-a31-display-frontend" },
 	{ .compatible = "allwinner,sun8i-a33-display-frontend" },
 	{ }
 };
-- 
2.16.3

[PATCH] drm/sun4i: Add missing frontend compatibles for A10, A13, A20 and A31

[Maxime Ripard]

On Thu, Apr 19, 2018 at 02:56:38PM +0200, Paul Kocialkowski wrote:
> Although frontend nodes are defined in the device-trees of the
> aforementioned platforms, there are no matching compatibles defined in
> the driver. This makes it impossible to probe the frontend on these
> platforms.
> 
> Adding the appropriate compatibles to the driver fixes the issue.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> ---
>  drivers/gpu/drm/sun4i/sun4i_frontend.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c
> index 85f75046712c..c5a3de11817d 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
> @@ -658,6 +658,10 @@ static const struct dev_pm_ops sun4i_frontend_pm_ops = {
>  };
>  
>  const struct of_device_id sun4i_frontend_of_table[] = {
> +	{ .compatible = "allwinner,sun7i-a10-display-frontend" },
> +	{ .compatible = "allwinner,sun7i-a13-display-frontend" },
> +	{ .compatible = "allwinner,sun7i-a20-display-frontend" },
> +	{ .compatible = "allwinner,sun7i-a31-display-frontend" },

Most of these compatibles are wrong, so it won't really work :)

If you only tested it on the A20, just add it. We didn't add all of
them because there's some slight variations between the generations
that are not yet taken into account.

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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[PATCH] drm/sun4i: Add missing frontend compatibles for A10, A13, A20 and A31

[Paul Kocialkowski]

Hi,

On Thu, 2018-04-19 at 17:07 +0200, Maxime Ripard wrote:
> On Thu, Apr 19, 2018 at 02:56:38PM +0200, Paul Kocialkowski wrote:
> > Although frontend nodes are defined in the device-trees of the
> > aforementioned platforms, there are no matching compatibles defined
> > in
> > the driver. This makes it impossible to probe the frontend on these
> > platforms.
> > 
> > Adding the appropriate compatibles to the driver fixes the issue.
> > 
> > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> > ---
> >  drivers/gpu/drm/sun4i/sun4i_frontend.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c
> > b/drivers/gpu/drm/sun4i/sun4i_frontend.c
> > index 85f75046712c..c5a3de11817d 100644
> > --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
> > +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
> > @@ -658,6 +658,10 @@ static const struct dev_pm_ops
> > sun4i_frontend_pm_ops = {
> >  };
> >  
> >  const struct of_device_id sun4i_frontend_of_table[] = {
> > +	{ .compatible = "allwinner,sun7i-a10-display-frontend" },
> > +	{ .compatible = "allwinner,sun7i-a13-display-frontend" },
> > +	{ .compatible = "allwinner,sun7i-a20-display-frontend" },
> > +	{ .compatible = "allwinner,sun7i-a31-display-frontend" },
> 
> Most of these compatibles are wrong, so it won't really work :)

Sorry for screwing up so bad...

> If you only tested it on the A20, just add it. We didn't add all of
> them because there's some slight variations between the generations
> that are not yet taken into account.

That makes sense. I will thus send v2 with A20 only and send follow-up
patches for other platforms when tested and properly working.

Thanks!

-- 
Paul Kocialkowski, Bootlin (formerly Free Electrons)
Embedded Linux and kernel engineering
https://bootlin.com
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