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[media] exynos4-is: Add Exynos4x12 FIMC-IS device tree binding documentation
This patch adds DT binding documentaton for the Imaging Subsystem
(camera ISP) found on Samsung Exynos4x12 SoCs.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
authored by
Sylwester Nawrocki
and committed by
Mauro Carvalho Chehab
0580abc2
b8d9834a
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Documentation/devicetree/bindings/media/exynos4-fimc-is.txt
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Documentation/devicetree/bindings/media/exynos4-fimc-is.txt
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Exynos4x12 SoC series Imaging Subsystem (FIMC-IS)
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The FIMC-IS is a subsystem for processing image signal from an image sensor.
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The Exynos4x12 SoC series FIMC-IS V1.5 comprises of a dedicated ARM Cortex-A5
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processor, ISP, DRC and FD IP blocks and peripheral devices such as UART, I2C
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and SPI bus controllers, PWM and ADC.
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fimc-is node
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------------
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Required properties:
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- compatible : should be "samsung,exynos4212-fimc-is" for Exynos4212 and
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Exynos4412 SoCs;
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- reg : physical base address and length of the registers set;
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- interrupts : must contain two FIMC-IS interrupts, in order: ISP0, ISP1;
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- clocks : list of clock specifiers, corresponding to entries in
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clock-names property;
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- clock-names : must contain "ppmuispx", "ppmuispx", "lite0", "lite1"
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"mpll", "sysreg", "isp", "drc", "fd", "mcuisp", "uart",
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"ispdiv0", "ispdiv1", "mcuispdiv0", "mcuispdiv1", "aclk200",
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"div_aclk200", "aclk400mcuisp", "div_aclk400mcuisp" entries,
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matching entries in the clocks property.
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pmu subnode
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-----------
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Required properties:
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- reg : must contain PMU physical base address and size of the register set.
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The following are the FIMC-IS peripheral device nodes and can be specified
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either standalone or as the fimc-is node child nodes.
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i2c-isp (ISP I2C bus controller) nodes
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------------------------------------------
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Required properties:
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- compatible : should be "samsung,exynos4212-i2c-isp" for Exynos4212 and
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Exynos4412 SoCs;
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- reg : physical base address and length of the registers set;
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- clocks : must contain gate clock specifier for this controller;
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- clock-names : must contain "i2c_isp" entry.
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For the above nodes it is required to specify a pinctrl state named "default",
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according to the pinctrl bindings defined in ../pinctrl/pinctrl-bindings.txt.
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Device tree nodes of the image sensors' controlled directly by the FIMC-IS
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firmware must be child nodes of their corresponding ISP I2C bus controller node.
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The data link of these image sensors must be specified using the common video
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interfaces bindings, defined in video-interfaces.txt.