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e72ddf2808
Adds preliminary patches for 4.19 Known Issues: - Does not like a lot of HDMI adapters Needs tested by anyone with a Le Potato, Odroid C2, or Nanopi K2
55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From c50c3a3d2cb0d563757a8b8b1a3e52acdf68910e Mon Sep 17 00:00:00 2001
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From: Maxime Jourdan <maxi.jourdan@wanadoo.fr>
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Date: Wed, 1 Aug 2018 20:51:26 +0200
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Subject: [PATCH] dt-bindings: soc: amlogic: add meson-canvas documentation
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DT bindings doc for amlogic,meson-canvas
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Signed-off-by: Maxime Jourdan <maxi.jourdan@wanadoo.fr>
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---
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.../bindings/soc/amlogic/amlogic,meson-canvas.txt | 36 ++++++++++++++++++++++
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1 file changed, 36 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-canvas.txt
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diff --git a/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-canvas.txt b/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-canvas.txt
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new file mode 100644
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index 0000000..96e1437
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-canvas.txt
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@@ -0,0 +1,36 @@
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+Amlogic Meson Canvas
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+================================
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+
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+A canvas is a collection of metadata that describes a pixel buffer.
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+Those metadata include: width, height, phyaddr, wrapping, block mode
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+and endianness.
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+
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+Many IPs within Amlogic SoCs rely on canvas indexes to read/write pixel data
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+rather than use the phy addresses directly. For instance, this is the case for
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+the video decoders and the display.
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+
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+Amlogic SoCs have 256 canvas.
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+
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+Device Tree Bindings:
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+---------------------
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+
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+Canvas Provider
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+--------------------------
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+
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+Required properties:
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+- compatible: "amlogic,meson-canvas"
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+
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+Parent node should have the following properties :
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+- compatible: "amlogic,meson-gx-dmc-sysctrl", "syscon", "simple-mfd"
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+- reg: base address and size of the DMC system control register space.
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+
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+Example:
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+
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+sysctrl_DMC: system-controller@0 {
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+ compatible = "amlogic,meson-gx-dmc-sysctrl", "syscon", "simple-mfd";
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+ reg = <0x0 0x0 0x0 0x1000>;
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+
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+ canvas: canvas-provider@0 {
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+ compatible = "amlogic,meson-canvas";
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+ };
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+};
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