linux/Documentation/devicetree/bindings/gpu/samsung-rotator.txt
Chanho Park 319477f35e 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>
2013-09-05 13:43:42 +09:00

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* 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".
Example:
rotator@12810000 {
compatible = "samsung,exynos4210-rotator";
reg = <0x12810000 0x1000>;
interrupts = <0 83 0>;
clocks = <&clock 278>;
clock-names = "rotator";
};