path: root/Documentation
diff options
authorChanho Park <chanho61.park@samsung.com>2013-08-13 14:12:56 +0900
committerInki Dae <inki.dae@samsung.com>2013-09-05 13:43:42 +0900
commit319477f35eef46e3c1eeb155f17c5fb06ef85704 (patch)
tree0255d4015c206710e8802d04a106e9dd09e62fbe /Documentation
parente30655d06179aa91c0c4caa2b7a6c55f8f81a731 (diff)
drm/exynos: add device tree support for rotator
The exynos4 platform is only dt-based since 3.10, we should convert driver data and ids to dt-based parsing methods. The rotator driver has a limit table to get size limit of input picture. Each SoCs has slightly different limit value compared with any others. For example, exynos4210's max_size of RGB888 is 16k x 16k. But, others have 8k x 8k. Another example the exynos5250 should have multiple of 2 pixel size for its X/Y axis. Thus, we should keep different tables for each of them. This patch also includes desciptions of each nodes for the rotator and specifies a example how to bind it. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'Documentation')
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpu/samsung-rotator.txt b/Documentation/devicetree/bindings/gpu/samsung-rotator.txt
new file mode 100644
index 000000000000..82cd1ed0be93
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/samsung-rotator.txt
@@ -0,0 +1,27 @@
+* Samsung Image Rotator
+Required properties:
+ - compatible : value should be one of the following:
+ (a) "samsung,exynos4210-rotator" for Rotator IP in Exynos4210
+ (b) "samsung,exynos4212-rotator" for Rotator IP in Exynos4212/4412
+ (c) "samsung,exynos5250-rotator" for Rotator IP in Exynos5250
+ - reg : Physical base address of the IP registers and length of memory
+ mapped region.
+ - interrupts : Interrupt specifier for rotator interrupt, according to format
+ specific to interrupt parent.
+ - clocks : Clock specifier for rotator clock, according to generic clock
+ bindings. (See Documentation/devicetree/bindings/clock/exynos*.txt)
+ - clock-names : Names of clocks. For exynos rotator, it should be "rotator".
+ rotator@12810000 {
+ compatible = "samsung,exynos4210-rotator";
+ reg = <0x12810000 0x1000>;
+ interrupts = <0 83 0>;
+ clocks = <&clock 278>;
+ clock-names = "rotator";
+ };

Privacy Policy