[PATCH 1/2] dt-bindings: meson: add specific simplefb bindings

[PATCH 1/2] dt-bindings: meson: add specific simplefb bindings

[Maxime Jourdan]

Similar to simple-framebuffer-sunxi, we support different display pipelines
that the firmware is free to choose from.

This documents the "amlogic,simple-framebuffer" compatible and the
"amlogic,pipeline" extension.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
---
 .../display/simple-framebuffer-meson.txt      | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt

diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
new file mode 100644
index 000000000000..122a5c005cd9
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
@@ -0,0 +1,33 @@
+Meson specific Simple Framebuffer bindings
+
+This binding documents meson specific extensions to the simple-framebuffer
+bindings. The meson simplefb u-boot code relies on the devicetree containing
+pre-populated simplefb nodes.
+
+These extensions are intended so that u-boot can select the right node based
+on which pipeline is being used. As such they are solely intended for
+firmware / bootloader use, and the OS should ignore them.
+
+Required properties:
+- compatible: "amlogic,simple-framebuffer"
+- amlogic,pipeline, one of:
+  "vpu-cvbs"
+  "vpu-hdmi"
+
+Example:
+
+chosen {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	ranges;
+
+	framebuffer@0 {
+		compatible = "amlogic,simple-framebuffer",
+			     "simple-framebuffer";
+		amlogic,pipeline = "vpu-hdmi";
+		clocks = <&clkc CLKID_HDMI_PCLK>,
+			 <&clkc CLKID_CLK81>,
+			 <&clkc CLKID_GCLK_VENCI_INT0>;
+		power-domains = <&pwrc_vpu>;
+	};
+};
-- 
2.19.2


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[PATCH 2/2] arm64: dts: meson-gx: add support for simplefb

[Maxime Jourdan]

SimpleFB allows transferring a framebuffer from the firmware/bootloader
to the kernel, while making sure the related clocks and power supplies
stay enabled.

Add nodes for CVBS and HDMI Simple Framebuffers.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
---
 arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 25 +++++++++++++++++++++
 arch/arm64/boot/dts/amlogic/meson-gxl.dtsi  | 25 +++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 1ade7e486828..4bc7dd5ba141 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -13,6 +13,31 @@
 / {
 	compatible = "amlogic,meson-gxbb";
 
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		framebuffer@0 {
+			compatible = "amlogic,simple-framebuffer",
+				     "simple-framebuffer";
+			amlogic,pipeline = "vpu-cvbs";
+			power-domains = <&pwrc_vpu>;
+			status = "disabled";
+		};
+
+		framebuffer@1 {
+			compatible = "amlogic,simple-framebuffer",
+				     "simple-framebuffer";
+			amlogic,pipeline = "vpu-hdmi";
+			clocks = <&clkc CLKID_HDMI_PCLK>,
+				 <&clkc CLKID_CLK81>,
+				 <&clkc CLKID_GCLK_VENCI_INT0>;
+			power-domains = <&pwrc_vpu>;
+			status = "disabled";
+		};
+	};
+
 	soc {
 		usb0_phy: phy@c0000000 {
 			compatible = "amlogic,meson-gxbb-usb2-phy";
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
index 8f0bb3c44bd6..f7ef8e0cf96e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
@@ -13,6 +13,31 @@
 / {
 	compatible = "amlogic,meson-gxl";
 
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		framebuffer@0 {
+			compatible = "amlogic,simple-framebuffer",
+				     "simple-framebuffer";
+			amlogic,pipeline = "vpu-cvbs";
+			power-domains = <&pwrc_vpu>;
+			status = "disabled";
+		};
+
+		framebuffer@1 {
+			compatible = "amlogic,simple-framebuffer",
+				     "simple-framebuffer";
+			amlogic,pipeline = "vpu-hdmi";
+			clocks = <&clkc CLKID_HDMI_PCLK>,
+				 <&clkc CLKID_CLK81>,
+				 <&clkc CLKID_GCLK_VENCI_INT0>;
+			power-domains = <&pwrc_vpu>;
+			status = "disabled";
+		};
+	};
+
 	soc {
 		usb0: usb@c9000000 {
 			status = "disabled";
-- 
2.19.2


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Re: [PATCH 1/2] dt-bindings: meson: add specific simplefb bindings

[Neil Armstrong]

Hi Maxime,

On 10/12/2018 10:06, Maxime Jourdan wrote:
> Similar to simple-framebuffer-sunxi, we support different display pipelines
> that the firmware is free to choose from.
> 
> This documents the "amlogic,simple-framebuffer" compatible and the
> "amlogic,pipeline" extension.
> 
> Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
> ---
>  .../display/simple-framebuffer-meson.txt      | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> new file mode 100644
> index 000000000000..122a5c005cd9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> @@ -0,0 +1,33 @@
> +Meson specific Simple Framebuffer bindings
> +
> +This binding documents meson specific extensions to the simple-framebuffer
> +bindings. The meson simplefb u-boot code relies on the devicetree containing
> +pre-populated simplefb nodes.
> +
> +These extensions are intended so that u-boot can select the right node based
> +on which pipeline is being used. As such they are solely intended for
> +firmware / bootloader use, and the OS should ignore them.
> +
> +Required properties:
> +- compatible: "amlogic,simple-framebuffer"
> +- amlogic,pipeline, one of:
> +  "vpu-cvbs"
> +  "vpu-hdmi"
> +
> +Example:
> +
> +chosen {
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +	ranges;
> +
> +	framebuffer@0 {
> +		compatible = "amlogic,simple-framebuffer",
> +			     "simple-framebuffer";
> +		amlogic,pipeline = "vpu-hdmi";
> +		clocks = <&clkc CLKID_HDMI_PCLK>,
> +			 <&clkc CLKID_CLK81>,
> +			 <&clkc CLKID_GCLK_VENCI_INT0>;
> +		power-domains = <&pwrc_vpu>;
> +	};
> +};
> 

You should add a cover-letter for this patchset !

Neil

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Re: [PATCH 1/2] dt-bindings: meson: add specific simplefb bindings

[Maxime Jourdan]

Hi Neil,
On Wed, Dec 12, 2018 at 10:54 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
>
> Hi Maxime,
>
> On 10/12/2018 10:06, Maxime Jourdan wrote:
> > Similar to simple-framebuffer-sunxi, we support different display pipelines
> > that the firmware is free to choose from.
> >
> > This documents the "amlogic,simple-framebuffer" compatible and the
> > "amlogic,pipeline" extension.
> >
> > Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
> > ---
> >  .../display/simple-framebuffer-meson.txt      | 33 +++++++++++++++++++
> >  1 file changed, 33 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> >
> > diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> > new file mode 100644
> > index 000000000000..122a5c005cd9
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> > @@ -0,0 +1,33 @@
> > +Meson specific Simple Framebuffer bindings
> > +
> > +This binding documents meson specific extensions to the simple-framebuffer
> > +bindings. The meson simplefb u-boot code relies on the devicetree containing
> > +pre-populated simplefb nodes.
> > +
> > +These extensions are intended so that u-boot can select the right node based
> > +on which pipeline is being used. As such they are solely intended for
> > +firmware / bootloader use, and the OS should ignore them.
> > +
> > +Required properties:
> > +- compatible: "amlogic,simple-framebuffer"
> > +- amlogic,pipeline, one of:
> > +  "vpu-cvbs"
> > +  "vpu-hdmi"
> > +
> > +Example:
> > +
> > +chosen {
> > +     #address-cells = <2>;
> > +     #size-cells = <2>;
> > +     ranges;
> > +
> > +     framebuffer@0 {
> > +             compatible = "amlogic,simple-framebuffer",
> > +                          "simple-framebuffer";
> > +             amlogic,pipeline = "vpu-hdmi";
> > +             clocks = <&clkc CLKID_HDMI_PCLK>,
> > +                      <&clkc CLKID_CLK81>,
> > +                      <&clkc CLKID_GCLK_VENCI_INT0>;
> > +             power-domains = <&pwrc_vpu>;
> > +     };
> > +};
> >
>
> You should add a cover-letter for this patchset !
>
> Neil

Sorry about that, I completely forgot. Thanks for the reminder, will repost.

Maxime

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Re: [PATCH 1/2] dt-bindings: meson: add specific simplefb bindings

[Rob Herring]

On Mon, Dec 10, 2018 at 10:06:39AM +0100, Maxime Jourdan wrote:
> Similar to simple-framebuffer-sunxi, we support different display pipelines
> that the firmware is free to choose from.
> 
> This documents the "amlogic,simple-framebuffer" compatible and the
> "amlogic,pipeline" extension.
> 
> Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
> ---
>  .../display/simple-framebuffer-meson.txt      | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> new file mode 100644
> index 000000000000..122a5c005cd9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
> @@ -0,0 +1,33 @@
> +Meson specific Simple Framebuffer bindings
> +
> +This binding documents meson specific extensions to the simple-framebuffer
> +bindings. The meson simplefb u-boot code relies on the devicetree containing
> +pre-populated simplefb nodes.
> +
> +These extensions are intended so that u-boot can select the right node based
> +on which pipeline is being used. As such they are solely intended for
> +firmware / bootloader use, and the OS should ignore them.
> +
> +Required properties:
> +- compatible: "amlogic,simple-framebuffer"

And a fallback?

> +- amlogic,pipeline, one of:
> +  "vpu-cvbs"
> +  "vpu-hdmi"
> +
> +Example:
> +
> +chosen {
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +	ranges;
> +
> +	framebuffer@0 {

Without 'reg', you shouldn't have a unit-address.

> +		compatible = "amlogic,simple-framebuffer",
> +			     "simple-framebuffer";
> +		amlogic,pipeline = "vpu-hdmi";
> +		clocks = <&clkc CLKID_HDMI_PCLK>,
> +			 <&clkc CLKID_CLK81>,
> +			 <&clkc CLKID_GCLK_VENCI_INT0>;
> +		power-domains = <&pwrc_vpu>;
> +	};
> +};
> -- 
> 2.19.2
> 

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