path: root/Documentation/devicetree/bindings/video
diff options
authorHans de Goede <hdegoede@redhat.com>2014-11-14 13:26:47 +0100
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-11-14 15:28:22 +0200
commit9ee4cd1aa3eec2f405652dc51779612104feebef (patch)
tree013e3ca7d7b78610396f5eff48c3f2a72884335a /Documentation/devicetree/bindings/video
parent6f15b602b8f93e1d199a85b95183d7a5836b3152 (diff)
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 <hdegoede@redhat.com> Reviewed-by: Mike Turquette <mturquette@linaro.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'Documentation/devicetree/bindings/video')
1 files 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.
framebuffer {

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