diff mbox

[v5,2/4] drm: bridge: add support for TI ths8135

Message ID 1481107365-24839-3-git-send-email-bgolaszewski@baylibre.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bartosz Golaszewski Dec. 7, 2016, 10:42 a.m. UTC 
THS8135 is a configurable video DAC. Add DT bindings for this chip and
use the dumb-vga-dac driver for now as no configuration is required to
make it work.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 .../bindings/display/bridge/ti,ths8135.txt         | 52 ++++++++++++++++++++++
 drivers/gpu/drm/bridge/dumb-vga-dac.c              |  1 +
 2 files changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt

Comments

Bartosz Golaszewski Dec. 7, 2016, 10:45 a.m. UTC | #1 
2016-12-07 11:42 GMT+01:00 Bartosz Golaszewski <bgolaszewski@baylibre.com>:
> THS8135 is a configurable video DAC. Add DT bindings for this chip and
> use the dumb-vga-dac driver for now as no configuration is required to
> make it work.
>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
>  .../bindings/display/bridge/ti,ths8135.txt         | 52 ++++++++++++++++++++++
>  drivers/gpu/drm/bridge/dumb-vga-dac.c              |  1 +
>  2 files changed, 53 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> new file mode 100644
> index 0000000..23cd8ee
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> @@ -0,0 +1,52 @@
> +THS8135 Video DAC
> +-----------------
> +
> +This is the binding for Texas Instruments THS8135 Video DAC bridge.
> +
> +Required properties:
> +
> +- compatible: Must be "ti,ths8135"
> +
> +Required nodes:
> +
> +This device has two video ports. Their connections are modelled using the OF
> +graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> +
> +- Video port 0 for RGB input
> +- Video port 1 for VGA output
> +
> +Example
> +-------
> +
> +vga-bridge {
> +       compatible = "ti,ths8135";
> +       #address-cells = <1>;
> +       #size-cells = <0>;
> +
> +       ports {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               port@0 {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +                       reg = <0>;
> +
> +                       vga_bridge_in: endpoint@0 {
> +                               reg = <0>;
> +                               remote-endpoint = <&lcdc_out_vga>;
> +                       };
> +               };
> +
> +               port@1 {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +                       reg = <1>;
> +
> +                       vga_bridge_out: endpoint@0 {
> +                               reg = <0>;
> +                               remote-endpoint = <&vga_con_in>;
> +                       };
> +               };
> +       };
> +};
> diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c
> index afec232..498fa75 100644
> --- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
> +++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
> @@ -204,6 +204,7 @@ static int dumb_vga_remove(struct platform_device *pdev)
>
>  static const struct of_device_id dumb_vga_match[] = {
>         { .compatible = "dumb-vga-dac" },
> +       { .compatible = "ti,ths8135" },
>         {},
>  };
>  MODULE_DEVICE_TABLE(of, dumb_vga_match);
> --
> 2.9.3
>

+ Maxime

Sorry, I forgot to include your e-mail.

Bartosz
Laurent Pinchart Dec. 7, 2016, 2:23 p.m. UTC | #2 
Hi Bartosz,

Thank you for the patch.

On Wednesday 07 Dec 2016 11:45:11 Bartosz Golaszewski wrote:
> 2016-12-07 11:42 GMT+01:00 Bartosz Golaszewski <bgolaszewski@baylibre.com>:
> > THS8135 is a configurable video DAC. Add DT bindings for this chip and
> > use the dumb-vga-dac driver for now as no configuration is required to
> > make it work.
> > 
> > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> > ---
> > 
> >  .../bindings/display/bridge/ti,ths8135.txt         | 52 +++++++++++++++++
> >  drivers/gpu/drm/bridge/dumb-vga-dac.c              |  1 +

You might be asked by DT maintainers to split this in two, but regardless of 
whether it's one patch or two, you can add my

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> >  2 files changed, 53 insertions(+)
> >  create mode 100644
> >  Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt> 
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> > b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt new
> > file mode 100644
> > index 0000000..23cd8ee
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> > @@ -0,0 +1,52 @@
> > +THS8135 Video DAC
> > +-----------------
> > +
> > +This is the binding for Texas Instruments THS8135 Video DAC bridge.
> > +
> > +Required properties:
> > +
> > +- compatible: Must be "ti,ths8135"
> > +
> > +Required nodes:
> > +
> > +This device has two video ports. Their connections are modelled using the
> > OF +graph bindings specified in
> > Documentation/devicetree/bindings/graph.txt. +
> > +- Video port 0 for RGB input
> > +- Video port 1 for VGA output
> > +
> > +Example
> > +-------
> > +
> > +vga-bridge {
> > +       compatible = "ti,ths8135";
> > +       #address-cells = <1>;
> > +       #size-cells = <0>;
> > +
> > +       ports {
> > +               #address-cells = <1>;
> > +               #size-cells = <0>;
> > +
> > +               port@0 {
> > +                       #address-cells = <1>;
> > +                       #size-cells = <0>;
> > +                       reg = <0>;
> > +
> > +                       vga_bridge_in: endpoint@0 {
> > +                               reg = <0>;
> > +                               remote-endpoint = <&lcdc_out_vga>;
> > +                       };
> > +               };
> > +
> > +               port@1 {
> > +                       #address-cells = <1>;
> > +                       #size-cells = <0>;
> > +                       reg = <1>;
> > +
> > +                       vga_bridge_out: endpoint@0 {
> > +                               reg = <0>;
> > +                               remote-endpoint = <&vga_con_in>;
> > +                       };
> > +               };
> > +       };
> > +};
> > diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c
> > b/drivers/gpu/drm/bridge/dumb-vga-dac.c index afec232..498fa75 100644
> > --- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
> > +++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
> > @@ -204,6 +204,7 @@ static int dumb_vga_remove(struct platform_device
> > *pdev)> 
> >  static const struct of_device_id dumb_vga_match[] = {
> >  
> >         { .compatible = "dumb-vga-dac" },
> > 
> > +       { .compatible = "ti,ths8135" },
> > 
> >         {},
> >  
> >  };
> >  MODULE_DEVICE_TABLE(of, dumb_vga_match);
> > 
> > --
> > 2.9.3
> 
> + Maxime
> 
> Sorry, I forgot to include your e-mail.
> 
> Bartosz
Rob Herring (Arm) Dec. 12, 2016, 4:45 p.m. UTC | #3 
On Wed, Dec 07, 2016 at 11:42:43AM +0100, Bartosz Golaszewski wrote:
> THS8135 is a configurable video DAC. Add DT bindings for this chip and
> use the dumb-vga-dac driver for now as no configuration is required to
> make it work.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
>  .../bindings/display/bridge/ti,ths8135.txt         | 52 ++++++++++++++++++++++
>  drivers/gpu/drm/bridge/dumb-vga-dac.c              |  1 +
>  2 files changed, 53 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt

Acked-by: Rob Herring <robh@kernel.org>

But one nit below:

> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> new file mode 100644
> index 0000000..23cd8ee
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> @@ -0,0 +1,52 @@
> +THS8135 Video DAC
> +-----------------
> +
> +This is the binding for Texas Instruments THS8135 Video DAC bridge.
> +
> +Required properties:
> +
> +- compatible: Must be "ti,ths8135"
> +
> +Required nodes:
> +
> +This device has two video ports. Their connections are modelled using the OF
> +graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> +
> +- Video port 0 for RGB input
> +- Video port 1 for VGA output
> +
> +Example
> +-------
> +
> +vga-bridge {
> +	compatible = "ti,ths8135";
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	ports {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		port@0 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0>;
> +
> +			vga_bridge_in: endpoint@0 {
> +				reg = <0>;

You don't need reg here.

> +				remote-endpoint = <&lcdc_out_vga>;
> +			};
> +		};
> +
> +		port@1 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <1>;
> +
> +			vga_bridge_out: endpoint@0 {
> +				reg = <0>;
> +				remote-endpoint = <&vga_con_in>;
> +			};
> +		};
> +	};
> +};
> diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c
> index afec232..498fa75 100644
> --- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
> +++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
> @@ -204,6 +204,7 @@ static int dumb_vga_remove(struct platform_device *pdev)
>  
>  static const struct of_device_id dumb_vga_match[] = {
>  	{ .compatible = "dumb-vga-dac" },
> +	{ .compatible = "ti,ths8135" },
>  	{},
>  };
>  MODULE_DEVICE_TABLE(of, dumb_vga_match);
> -- 
> 2.9.3
>
Laurent Pinchart Dec. 12, 2016, 4:49 p.m. UTC | #4 
Hello,

On Monday 12 Dec 2016 10:45:47 Rob Herring wrote:
> On Wed, Dec 07, 2016 at 11:42:43AM +0100, Bartosz Golaszewski wrote:
> > THS8135 is a configurable video DAC. Add DT bindings for this chip and
> > use the dumb-vga-dac driver for now as no configuration is required to
> > make it work.
> > 
> > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> > ---
> > 
> >  .../bindings/display/bridge/ti,ths8135.txt         | 52 +++++++++++++++++
> >  drivers/gpu/drm/bridge/dumb-vga-dac.c              |  1 +
> >  2 files changed, 53 insertions(+)
> >  create mode 100644
> >  Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> Acked-by: Rob Herring <robh@kernel.org>
> 
> But one nit below:
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> > b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt new
> > file mode 100644
> > index 0000000..23cd8ee
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
> > @@ -0,0 +1,52 @@
> > +THS8135 Video DAC
> > +-----------------
> > +
> > +This is the binding for Texas Instruments THS8135 Video DAC bridge.
> > +
> > +Required properties:
> > +
> > +- compatible: Must be "ti,ths8135"
> > +
> > +Required nodes:
> > +
> > +This device has two video ports. Their connections are modelled using the
> > OF +graph bindings specified in
> > Documentation/devicetree/bindings/graph.txt. +
> > +- Video port 0 for RGB input
> > +- Video port 1 for VGA output
> > +
> > +Example
> > +-------
> > +
> > +vga-bridge {
> > +	compatible = "ti,ths8135";
> > +	#address-cells = <1>;
> > +	#size-cells = <0>;
> > +
> > +	ports {
> > +		#address-cells = <1>;
> > +		#size-cells = <0>;
> > +
> > +		port@0 {
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +			reg = <0>;
> > +
> > +			vga_bridge_in: endpoint@0 {
> > +				reg = <0>;
> 
> You don't need reg here.

In which case the endpoint node should be named endpoint, not endpoint@0. You 
could then also remove the #address-cells and #size-cells properties from the 
port@0 node. Same for port@1 below.

> > +				remote-endpoint = <&lcdc_out_vga>;
> > +			};
> > +		};
> > +
> > +		port@1 {
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +			reg = <1>;
> > +
> > +			vga_bridge_out: endpoint@0 {
> > +				reg = <0>;
> > +				remote-endpoint = <&vga_con_in>;
> > +			};
> > +		};
> > +	};
> > +};
> > diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c
> > b/drivers/gpu/drm/bridge/dumb-vga-dac.c index afec232..498fa75 100644
> > --- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
> > +++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
> > @@ -204,6 +204,7 @@ static int dumb_vga_remove(struct platform_device
> > *pdev)
> >  
> >  static const struct of_device_id dumb_vga_match[] = {
> >  	{ .compatible = "dumb-vga-dac" },
> > +	{ .compatible = "ti,ths8135" },
> >  	{},
> >  };
> >  MODULE_DEVICE_TABLE(of, dumb_vga_match);
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
new file mode 100644
index 0000000..23cd8ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt
@@ -0,0 +1,52 @@ 
+THS8135 Video DAC
+-----------------
+
+This is the binding for Texas Instruments THS8135 Video DAC bridge.
+
+Required properties:
+
+- compatible: Must be "ti,ths8135"
+
+Required nodes:
+
+This device has two video ports. Their connections are modelled using the OF
+graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+
+- Video port 0 for RGB input
+- Video port 1 for VGA output
+
+Example
+-------
+
+vga-bridge {
+	compatible = "ti,ths8135";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+
+			vga_bridge_in: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&lcdc_out_vga>;
+			};
+		};
+
+		port@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			vga_bridge_out: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&vga_con_in>;
+			};
+		};
+	};
+};
diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c
index afec232..498fa75 100644
--- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
+++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
@@ -204,6 +204,7 @@  static int dumb_vga_remove(struct platform_device *pdev)
 
 static const struct of_device_id dumb_vga_match[] = {
 	{ .compatible = "dumb-vga-dac" },
+	{ .compatible = "ti,ths8135" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, dumb_vga_match);