From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Date: Mon, 17 Nov 2014 11:34:46 +0000 Subject: [PATCH 2/2] dt-bindings: simplefb-sunxi: Add sunxi simplefb extensions Message-Id: <1416224086-5698-3-git-send-email-hdegoede@redhat.com> List-Id: References: <1416224086-5698-1-git-send-email-hdegoede@redhat.com> In-Reply-To: <1416224086-5698-1-git-send-email-hdegoede@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org If pre-filled framebuffer nodes are used, the firmware may need extra properties to find the right node. This documents the properties to use for this on sunxi platforms. Signed-off-by: Hans de Goede --- .../bindings/video/simple-framebuffer-sunxi.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/simple-framebuffer-sunxi.txt diff --git a/Documentation/devicetree/bindings/video/simple-framebuffer-sunxi.txt b/Documentation/devicetree/bindings/video/simple-framebuffer-sunxi.txt new file mode 100644 index 0000000..84ca264 --- /dev/null +++ b/Documentation/devicetree/bindings/video/simple-framebuffer-sunxi.txt @@ -0,0 +1,33 @@ +Sunxi specific Simple Framebuffer bindings + +This binding documents sunxi specific extensions to the simple-framebuffer +bindings. The sunxi 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 and output is being used. As such they are solely intended +for firmware / bootloader use, and the OS should ignore them. + +Required properties: +- compatible: "sunxi,framebuffer" +- sunxi,pipeline: + <0> for the de_be0 -> lcdc0 -> output pipeline + <1> for the de_be1 -> lcdc1 -> output pipeline +- sunxi,output: One of: "hdmi", "lcd", "vga", and "composite" + +Example: + +chosen { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + framebuffer@0 { + compatible = "sunxi,framebuffer", "simple-framebuffer"; + sunxi,pipeline = <0>; + sunxi,output = "hdmi"; + clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 43>, + <&ahb_gates 44>; + status = "disabled"; + }; +}; -- 2.1.0