[PATCH v5 2/5] dt-bindings: Add a clocks property to the simple-framebuffer binding
From: Hans de Goede <hidden>
Date: 2014-11-12 16:15:49
Also in:
linux-devicetree, linux-fbdev
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> Reviewed-by: Mike Turquette <redacted> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Maxime Ripard <redacted> Acked-by: Grant Likely <redacted> -- Changes in v2: -Added Reviewed-by: Mike Turquette [off-list ref] Changes in v3: -Updated description to make clear simplefb deals with more then just memory Changes in v5: -Improved clocks property description --- .../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 70c26f3..8f35718 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 {
--
2.1.0