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diff --git a/Documentation/devicetree/bindings/media/samsung-fimc.txt b/Documentation/devicetree/bindings/media/samsung-fimc.txt new file mode 100644 index 000000000000..22e2889162c3 --- /dev/null +++ b/Documentation/devicetree/bindings/media/samsung-fimc.txt @@ -0,0 +1,101 @@ +Samsung S5P/EXYNOS SoC Camera Subsystem (FIMC) +---------------------------------------------- + +The S5P/Exynos SoC Camera subsystem comprises of multiple sub-devices +represented by separate device tree nodes. Currently this includes: FIMC (in +the S5P SoCs series known as CAMIF), MIPI CSIS, FIMC-LITE and FIMC-IS (ISP). + +The sub-subdevices are defined as child nodes of the common 'camera' node which +also includes common properties of the whole subsystem not really specific to +any single sub-device, like common camera port pins or the CAMCLK clock outputs +for external image sensors attached to an SoC. + +Common 'camera' node +-------------------- + +Required properties: + +- compatible : must be "samsung,fimc", "simple-bus" +- clocks : list of clock specifiers, corresponding to entries in + clock-names property; +- clock-names : must contain "fimc", "sclk_fimc" entries, matching entries + in the clocks property. + +The 'camera' node must include at least one 'fimc' child node. + + +'fimc' device nodes +------------------- + +Required properties: + +- compatible: "samsung,s5pv210-fimc" for S5PV210, "samsung,exynos4210-fimc" + for Exynos4210 and "samsung,exynos4212-fimc" for Exynos4x12 SoCs; +- reg: physical base address and length of the registers set for the device; +- interrupts: should contain FIMC interrupt; +- clocks: list of clock specifiers, must contain an entry for each required + entry in clock-names; +- clock-names: must include "fimc", "sclk_fimc", "mux" entries and optionally + "parent" entry. +- samsung,pix-limits: an array of maximum supported image sizes in pixels, for + details refer to Table 2-1 in the S5PV210 SoC User Manual; The meaning of + each cell is as follows: + 0 - scaler input horizontal size, + 1 - input horizontal size for the scaler bypassed, + 2 - REAL_WIDTH without input rotation, + 3 - REAL_HEIGHT with input rotation, +- samsung,sysreg: a phandle to the SYSREG node. + +Each FIMC device should have an alias in the aliases node, in the form of +fimc<n>, where <n> is an integer specifying the IP block instance. + +Optional properties: + +- clock-frequency: maximum FIMC local clock (LCLK) frequency; +- samsung,min-pix-sizes: an array specyfing minimum image size in pixels at + the FIMC input and output DMA, in the first and second cell respectively. + Default value when this property is not present is <16 16>; +- samsung,min-pix-alignment: minimum supported image height alignment (first + cell) and the horizontal image offset (second cell). The values are in pixels + and default to <2 1> when this property is not present; +- samsung,mainscaler-ext: a boolean property indicating whether the FIMC IP + supports extended image size and has CIEXTEN register; +- samsung,rotators: a bitmask specifying whether this IP has the input and + the output rotator. Bits 4 and 0 correspond to input and output rotator + respectively. If a rotator is present its corresponding bit should be set. + Default value when this property is not specified is 0x11. +- samsung,cam-if: a bolean property indicating whether the IP block includes + the camera input interface. +- samsung,isp-wb: this property must be present if the IP block has the ISP + writeback input. +- samsung,lcd-wb: this property must be present if the IP block has the LCD + writeback input. + + +Example: + + aliases { + fimc0 = &fimc_0; + }; + + camera { + compatible = "samsung,fimc", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + status = "okay"; + + fimc_0: fimc@11800000 { + compatible = "samsung,exynos4210-fimc"; + reg = <0x11800000 0x1000>; + interrupts = <0 85 0>; + status = "okay"; + }; + + csis_0: csis@11880000 { + compatible = "samsung,exynos4210-csis"; + reg = <0x11880000 0x1000>; + interrupts = <0 78 0>; + }; + }; + +The MIPI-CSIS device binding is defined in samsung-mipi-csis.txt. |