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Subject[PATCH v4 2/2] dt-bindings: Document the Rockchip RK1608 bindings
Date
From: Leo Wen <leo.wen@rock-chips.com>

Add DT bindings documentation for Rockchip RK1608.

Changes V4:
- Revise the comment of node.
- Revise the comment of 'endpoint@1'.

Signed-off-by: Leo Wen <leo.wen@rock-chips.com>
---
Documentation/devicetree/bindings/media/rk1608.txt | 95 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 96 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/rk1608.txt

diff --git a/Documentation/devicetree/bindings/media/rk1608.txt b/Documentation/devicetree/bindings/media/rk1608.txt
new file mode 100644
index 0000000..ea23d2d
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/rk1608.txt
@@ -0,0 +1,95 @@
+Rockchip RK1608 as a PreISP to link on Soc
+------------------------------------------
+
+Required properties:
+
+- compatible : "rockchip,rk1608";
+- reg : SPI slave address of the rk1608;
+- clocks : Must contain an entry for each entry in clock-names;
+- clock-names : Must contain "mclk" for the device's master clock;
+- reset-gpios : GPIO connected to reset pin;
+- irq-gpios : GPIO connected to irq pin;
+- sleepst-gpios : GPIO connected to sleepst pin;
+- wakeup-gpios : GPIO connected to wakeup pin;
+- powerdown-gpios : GPIO connected to powerdown pin;
+- pinctrl-names : Should contain only one value - "default";
+- pinctrl-0 : Pin control group to be used for this controller;
+
+Optional properties:
+
+- spi-max-frequency : Maximum SPI clocking speed of the device;
+
+The device node should contain one or two port child nodes with child
+'endpoint' node. There are two ports then port@0 must
+describe the output and port@1 input channels. Please refer to the
+bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+endpoint node
+-------------
+
+- data-lanes : (optional) specifies MIPI CSI-2 data lanes as covered in
+ video-interfaces.txt. If present it should be <1> - the device
+ supports only one data lane without re-mapping.
+
+Note1: Since no data is generated in RK1608,so this is meaningful that you need
+a extra sensor (such as a camera) mounted on RK1608. You need to use endpoint@x
+to match these sensors.
+
+Note2:You must set the current value of the spi pins to be 8mA, if they are not.
+
+Example:
+&spi0 {
+ status = "okay";
+ spi_rk1608@00 {
+ compatible = "rockchip,rk1608";
+ status = "okay";
+ reg = <0>;
+ spi-max-frequency = <24000000>;
+ link-freqs = /bits/ 64 <LINK_FREQ>;
+ clocks = <&cru SCLK_SPI0>, <&cru SCLK_VIP_OUT>,
+ <&cru DCLK_VOP0>, <&cru ACLK_VIP>, <&cru HCLK_VIP>,
+ <&cru PCLK_ISP_IN>, <&cru PCLK_ISP_IN>,
+ <&cru PCLK_ISP_IN>, <&cru SCLK_MIPIDSI_24M>,
+ <&cru PCLK_MIPI_CSI>;
+ clock-names = "mclk", "mipi_clk", "pd_cif", "aclk_cif",
+ "hclk_cif", "cif0_in", "g_pclkin_cif",
+ "cif0_out", "clk_mipi_24m", "hclk_mipiphy";
+ reset-gpios = <&gpio6 0 GPIO_ACTIVE_HIGH>;
+ irq-gpios = <&gpio6 2 GPIO_ACTIVE_HIGH>;
+ sleepst-gpios = <&gpio6 1 GPIO_ACTIVE_HIGH>;
+ wakeup-gpios = <&gpio6 4 GPIO_ACTIVE_HIGH>;
+ powerdown-gpios = <&gpio8 0 GPIO_ACTIVE_HIGH>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&rk1608_irq_gpios &rk1608_wake_gpios
+ &rk1608_sleep_gpios>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ mipi_dphy_out0: endpoint@0 {
+ remote-endpoint = <&mipi_dphy_in0>;
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <LINK_FREQ>;
+ };
+ };
+
+ port@1 {
+ sensor_in0: endpoint@0 {
+ remote-endpoint = <&sensor_out0>;
+ };
+ /* If you have a second sensor,
+ * add the 'endpoint@1' node here.
+ */
+ sensor_in1: endpoint@1 {
+ remote-endpoint = <&sensor_out1>;
+ };
+ };
+ };
+ };
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index b2a98e3..04d227b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -141,6 +141,7 @@ M: Leo Wen <leo.wen@rock-chips.com>
S: Maintained
F: drivers/media/spi/rk1608.c
F: drivers/media/spi/rk1608.h
+F: Documentation/devicetree/bindings/media/rk1608.txt

3C59X NETWORK DRIVER
M: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
--
2.7.4

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