This patch adds DT binding documentaton for the Imaging Subsystem (camera ISP) found on Samsung Exynos4x12 SoCs.
Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com> --- Changes since v3: - specified order of the interrupts, - added a note about image sensor device nodes. Changes since v2: - added missing clocks at the binding documentation; - added clocks/clock-names properties to isp-i2c node. --- .../devicetree/bindings/media/exynos4-fimc-is.txt | 49 ++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/exynos4-fimc-is.txt diff --git a/Documentation/devicetree/bindings/media/exynos4-fimc-is.txt b/Documentation/devicetree/bindings/media/exynos4-fimc-is.txt new file mode 100644 index 0000000..55c9ad6 --- /dev/null +++ b/Documentation/devicetree/bindings/media/exynos4-fimc-is.txt @@ -0,1 +1,49 @@ +Exynos4x12 SoC series Imaging Subsystem (FIMC-IS) + +The FIMC-IS is a subsystem for processing image signal from an image sensor. +The Exynos4x12 SoC series FIMC-IS V1.5 comprises of a dedicated ARM Cortex-A5 +processor, ISP, DRC and FD IP blocks and peripheral devices such as UART, I2C +and SPI bus controllers, PWM and ADC. + +fimc-is node +------------ + +Required properties: +- compatible : should be "samsung,exynos4212-fimc-is" for Exynos4212 and + Exynos4412 SoCs; +- reg : physical base address and length of the registers set; +- interrupts : must contain two FIMC-IS interrupts, in order: ISP0, ISP1; +- clocks : list of clock specifiers, corresponding to entries in + clock-names property; +- clock-names : must contain "ppmuispx", "ppmuispx", "lite0", "lite1" + "mpll", "sysreg", "isp", "drc", "fd", "mcuisp", "uart", + "ispdiv0", "ispdiv1", "mcuispdiv0", "mcuispdiv1", "aclk200", + "div_aclk200", "aclk400mcuisp", "div_aclk400mcuisp" entries, + matching entries in the clocks property. +pmu subnode +----------- + +Required properties: + - reg : must contain PMU physical base address and size of the register set. + +The following are the FIMC-IS peripheral device nodes and can be specified +either standalone or as the fimc-is node child nodes. + +i2c-isp (ISP I2C bus controller) nodes +------------------------------------------ + +Required properties: + +- compatible : should be "samsung,exynos4212-i2c-isp" for Exynos4212 and + Exynos4412 SoCs; +- reg : physical base address and length of the registers set; +- clocks : must contain gate clock specifier for this controller; +- clock-names : must contain "i2c_isp" entry. + +For the above nodes it is required to specify a pinctrl state named "default", +according to the pinctrl bindings defined in ../pinctrl/pinctrl-bindings.txt. + +Device tree nodes of the image sensors controlled directly by the FIMC-IS +firmware must be child nodes of their corresponding ISP I2C bus controller node. +The data link of these image sensors must be specified using the common video +interfaces bindings, defined in video-interfaces.txt. -- 1.7.9.5 _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss
