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| author | Chanho Park <chanho61.park@samsung.com> | 2013-08-13 14:12:56 +0900 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2013-09-05 13:43:42 +0900 |
| commit | 319477f35eef46e3c1eeb155f17c5fb06ef85704 (patch) | |
| tree | 0255d4015c206710e8802d04a106e9dd09e62fbe /Documentation/devicetree | |
| parent | e30655d06179aa91c0c4caa2b7a6c55f8f81a731 (diff) | |
| download | linux-319477f35eef46e3c1eeb155f17c5fb06ef85704.tar.bz2 | |
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/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/gpu/samsung-rotator.txt | 27 |
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". + +Example: + rotator@12810000 { + compatible = "samsung,exynos4210-rotator"; + reg = <0x12810000 0x1000>; + interrupts = <0 83 0>; + clocks = <&clock 278>; + clock-names = "rotator"; + }; |