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From: Maxime Jourdan <mjourdan@baylibre.com>
To: Kevin Hilman <khilman@baylibre.com>
Cc: Maxime Jourdan <mjourdan@baylibre.com>,
	Rob Herring <robh@kernel.org>,
	Neil Armstrong <narmstrong@baylibre.com>,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/2] dt-bindings: meson: add specific simplefb bindings
Date: Mon,  7 Jan 2019 10:53:06 +0100
Message-ID: <20190107095307.15233-2-mjourdan@baylibre.com> (raw)
In-Reply-To: <20190107095307.15233-1-mjourdan@baylibre.com>

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..aaa6c24c8e70
--- /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", "simple-framebuffer"
+- amlogic,pipeline, one of:
+  "vpu-cvbs"
+  "vpu-hdmi"
+
+Example:
+
+chosen {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	ranges;
+
+	simplefb_hdmi: framebuffer-hdmi {
+		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>;
+	};
+};
-- 
2.20.1


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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-07  9:53 [PATCH v2 0/2] arm64: dts: meson: add simple-framebuffer nodes Maxime Jourdan
2019-01-07  9:53 ` Maxime Jourdan [this message]
2019-01-11 22:25   ` [PATCH v2 1/2] dt-bindings: meson: add specific simplefb bindings Rob Herring
2019-01-16 12:27     ` Maxime Jourdan
2019-01-07  9:53 ` [PATCH v2 2/2] arm64: dts: meson-gx: add support for simplefb Maxime Jourdan

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