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FROMLIST: dt-bindings: Document the Rockchip ISP1 bindings

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Add DT bindings documentation for Rockchip ISP1

Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Reviewed-by: Rob Herring <robh@kernel.org>

BUG=b:36227021
TEST=Camera works on Scarlet with the whole series
(am from https://patchwork.linuxtv.org/patch/46233/)

Change-Id: I289c59f503e74671ab6fcfe54370f29ad1cf220b
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
This commit is contained in:
Jacob Chen
2017-12-18 20:14:39 +08:00
committed by Tao Huang
parent f92c8b0016
commit 9d502fadd5
1 changed files with 69 additions and 0 deletions
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Documentation/devicetree/bindings/media/rockchip-isp1.txt Normal file
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Rockchip SoC Image Signal Processing unit v1
----------------------------------------------
Rockchip ISP1 is the Camera interface for the Rockchip series of SoCs
which contains image processing, scaling, and compression funcitons.
Required properties:
- compatible: value should be one of the following
"rockchip,rk3288-cif-isp";
"rockchip,rk3399-cif-isp";
- reg : offset and length of the register set for the device.
- interrupts: should contain ISP interrupt.
- clocks: phandle to the required clocks.
- clock-names: required clock name.
- iommus: required a iommu node.
port node
-------------------
The device node should contain one 'port' child node with child 'endpoint'
nodes, according to the bindings defined in Documentation/devicetree/bindings/
media/video-interfaces.txt.
- endpoint(parallel):
- remote-endpoint: Connecting to a sensor with a parallel video bus.
- parallel_bus properties: Refer to Documentation/devicetree/bindings/
media/video-interfaces.txt.
- endpoint(mipi):
- remote-endpoint: Connecting to Rockchip MIPI-DPHY,
which is defined in rockchip-mipi-dphy.txt.
The port node must contain at least one endpoint, either parallel or mipi.
It could have multiple endpoints, but please note the hardware don't support
two sensors work at a time, they are supposed to work asynchronously.
Device node example
-------------------
isp0: isp0@ff910000 {
compatible = "rockchip,rk3399-cif-isp";
reg = <0x0 0xff910000 0x0 0x4000>;
interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH 0>;
clocks = <&cru SCLK_ISP0>,
<&cru ACLK_ISP0>, <&cru ACLK_ISP0_WRAPPER>,
<&cru HCLK_ISP0>, <&cru HCLK_ISP0_WRAPPER>;
clock-names = "clk_isp",
"aclk_isp", "aclk_isp_wrap",
"hclk_isp", "hclk_isp_wrap";
power-domains = <&power RK3399_PD_ISP0>;
iommus = <&isp0_mmu>;
port {
#address-cells = <1>;
#size-cells = <0>;
/* mipi */
isp0_mipi_in: endpoint@0 {
reg = <0>;
remote-endpoint = <&dphy_rx0_out>;
};
/* parallel */
isp0_parallel_in: endpoint@1 {
reg = <1>;
remote-endpoint = <&ov5640_out>;
bus-width = <8>;
};
};
};