From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Document the device tree bindings for this driver.
Mostly copied from the atmel-isc bindings.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
.../devicetree/bindings/media/atmel-isi.txt | 91 +++++++++++++---------
1 file changed, 56 insertions(+), 35 deletions(-)
diff --git a/Documentation/devicetree/bindings/media/atmel-isi.txt b/Documentation/devicetree/bindings/media/atmel-isi.txt
index 251f008..d1934b4 100644
--- a/Documentation/devicetree/bindings/media/atmel-isi.txt
+++ b/Documentation/devicetree/bindings/media/atmel-isi.txt
@@ -1,51 +1,72 @@
-Atmel Image Sensor Interface (ISI) SoC Camera Subsystem
-----------------------------------------------
+Atmel Image Sensor Interface (ISI)
+----------------------------------
-Required properties:
-- compatible: must be "atmel,at91sam9g45-isi"
-- reg: physical base address and length of the registers set for the device;
-- interrupts: should contain IRQ line for the ISI;
-- clocks: list of clock specifiers, corresponding to entries in
- the clock-names property;
-- clock-names: must contain "isi_clk", which is the isi peripherial clock.
+Required properties for ISI:
+- compatible
+ Must be "atmel,at91sam9g45-isi".
+- reg
+ Physical base address and length of the registers set for the device.
+- interrupts
+ Should contain IRQ line for the ISI.
+- clocks
+ List of clock specifiers, corresponding to entries in
+ the clock-names property;
+ Please refer to clock-bindings.txt.
+- clock-names
+ Required elements: "isi_clk".
+- #clock-cells
+ Should be 0.
+- pinctrl-names, pinctrl-0
+ Please refer to pinctrl-bindings.txt.
ISI supports a single port node with parallel bus. It should contain one
'port' child node with child 'endpoint' node. Please refer to the bindings
defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
Example:
- isi: isi@f0034000 {
- compatible = "atmel,at91sam9g45-isi";
- reg = <0xf0034000 0x4000>;
- interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
- clocks = <&isi_clk>;
- clock-names = "isi_clk";
+isi: isi@f0034000 {
+ compatible = "atmel,at91sam9g45-isi";
+ reg = <0xf0034000 0x4000>;
+ interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_isi_data_0_7>;
+ clocks = <&isi_clk>;
+ clock-names = "isi_clk";
+ status = "ok";
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ isi_0: endpoint {
+ reg = <0>;
+ remote-endpoint = <&ov2640_0>;
+ bus-width = <8>;
+ vsync-active = <1>;
+ hsync-active = <1>;
+ };
+ };
+};
+
+i2c1: i2c@f0018000 {
+ status = "okay";
+ ov2640: camera@0x30 {
+ compatible = "ovti,ov2640";
+ reg = <0x30>;
pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_isi>;
+ pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
+ resetb-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
+ pwdn-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
+ clocks = <&pck0>;
+ clock-names = "xvclk";
+ assigned-clocks = <&pck0>;
+ assigned-clock-rates = <25000000>;
port {
- #address-cells = <1>;
- #size-cells = <0>;
-
- isi_0: endpoint {
- remote-endpoint = <&ov2640_0>;
+ ov2640_0: endpoint {
+ remote-endpoint = <&isi_0>;
bus-width = <8>;
};
};
};
-
- i2c1: i2c@f0018000 {
- ov2640: camera@0x30 {
- compatible = "ovti,ov2640";
- reg = <0x30>;
-
- port {
- ov2640_0: endpoint {
- remote-endpoint = <&isi_0>;
- bus-width = <8>;
- };
- };
- };
- };
+};
--
2.10.2
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