From 9ee4cd1aa3eec2f405652dc51779612104feebef Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 14 Nov 2014 13:26:47 +0100 Subject: [PATCH] dt-bindings: Add a clocks property to the simple-framebuffer binding A simple-framebuffer node represents a framebuffer setup by the firmware / bootloader. Such a framebuffer may have a number of clocks in use, add a property to communicate this to the OS. Signed-off-by: Hans de Goede Reviewed-by: Mike Turquette Acked-by: Geert Uytterhoeven Reviewed-by: Maxime Ripard Acked-by: Grant Likely Signed-off-by: Tomi Valkeinen --- .../devicetree/bindings/video/simple-framebuffer.txt | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/video/simple-framebuffer.txt b/Documentation/devicetree/bindings/video/simple-framebuffer.txt index 70c26f3a5b9a..8f35718f4f5b 100644 --- a/Documentation/devicetree/bindings/video/simple-framebuffer.txt +++ b/Documentation/devicetree/bindings/video/simple-framebuffer.txt @@ -1,8 +1,8 @@ Simple Framebuffer -A simple frame-buffer describes a raw memory region that may be rendered to, -with the assumption that the display hardware has already been set up to scan -out from that buffer. +A simple frame-buffer describes a frame-buffer setup by firmware or +the bootloader, with the assumption that the display hardware has already +been set up to scan out from the memory pointed to by the reg property. Required properties: - compatible: "simple-framebuffer" @@ -14,6 +14,12 @@ Required properties: - r5g6b5 (16-bit pixels, d[15:11]=r, d[10:5]=g, d[4:0]=b). - a8b8g8r8 (32-bit pixels, d[31:24]=a, d[23:16]=b, d[15:8]=g, d[7:0]=r). +Optional properties: +- clocks : List of clocks used by the framebuffer. Clocks listed here + are expected to already be configured correctly. The OS must + ensure these clocks are not modified or disabled while the + simple framebuffer remains active. + Example: framebuffer { -- 2.20.1