1 Atmel Image Sensor Interface (ISI) 1 Atmel Image Sensor Interface (ISI)
2 ---------------------------------- 2 ----------------------------------
3 3
4 Required properties for ISI: 4 Required properties for ISI:
5 - compatible: must be "atmel,at91sam9g45-isi" !! 5 - compatible: must be "atmel,at91sam9g45-isi".
6 - reg: physical base address and length of the 6 - reg: physical base address and length of the registers set for the device.
7 - interrupts: should contain IRQ line for the 7 - interrupts: should contain IRQ line for the ISI.
8 - clocks: list of clock specifiers, correspond 8 - clocks: list of clock specifiers, corresponding to entries in the clock-names
9 property; please refer to clock-bindin 9 property; please refer to clock-bindings.txt.
10 - clock-names: required elements: "isi_clk". 10 - clock-names: required elements: "isi_clk".
11 - pinctrl-names, pinctrl-0: please refer to pi 11 - pinctrl-names, pinctrl-0: please refer to pinctrl-bindings.txt.
12 12
13 ISI supports a single port node with parallel 13 ISI supports a single port node with parallel bus. It shall contain one
14 'port' child node with child 'endpoint' node. 14 'port' child node with child 'endpoint' node. Please refer to the bindings
15 defined in Documentation/devicetree/bindings/m 15 defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
16 16
17 Endpoint node properties 17 Endpoint node properties
18 ------------------------ 18 ------------------------
19 19
20 - bus-width: <8> or <10> (mandatory) 20 - bus-width: <8> or <10> (mandatory)
21 - hsync-active (default: active high) 21 - hsync-active (default: active high)
22 - vsync-active (default: active high) 22 - vsync-active (default: active high)
23 - pclk-sample (default: sample on falling edge 23 - pclk-sample (default: sample on falling edge)
24 - remote-endpoint: A phandle to the bus receiv 24 - remote-endpoint: A phandle to the bus receiver's endpoint node (mandatory).
25 25
26 Example: 26 Example:
27 27
28 isi: isi@f0034000 { 28 isi: isi@f0034000 {
29 compatible = "atmel,at91sam9g45-isi"; 29 compatible = "atmel,at91sam9g45-isi";
30 reg = <0xf0034000 0x4000>; 30 reg = <0xf0034000 0x4000>;
31 interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5 31 interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
32 pinctrl-names = "default"; 32 pinctrl-names = "default";
33 pinctrl-0 = <&pinctrl_isi_data_0_7>; 33 pinctrl-0 = <&pinctrl_isi_data_0_7>;
34 clocks = <&isi_clk>; 34 clocks = <&isi_clk>;
35 clock-names = "isi_clk"; 35 clock-names = "isi_clk";
36 port { 36 port {
37 isi_0: endpoint { 37 isi_0: endpoint {
38 remote-endpoint = <&ov 38 remote-endpoint = <&ov2640_0>;
39 bus-width = <8>; 39 bus-width = <8>;
40 vsync-active = <1>; 40 vsync-active = <1>;
41 hsync-active = <1>; 41 hsync-active = <1>;
42 }; 42 };
43 }; 43 };
44 }; 44 };
45 45
46 i2c1: i2c@f0018000 { 46 i2c1: i2c@f0018000 {
47 ov2640: camera@30 { 47 ov2640: camera@30 {
48 compatible = "ovti,ov2640"; 48 compatible = "ovti,ov2640";
49 reg = <0x30>; 49 reg = <0x30>;
50 pinctrl-names = "default"; 50 pinctrl-names = "default";
51 pinctrl-0 = <&pinctrl_pck0_as_ 51 pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
52 resetb-gpios = <&pioE 11 GPIO_ 52 resetb-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
53 pwdn-gpios = <&pioE 13 GPIO_AC 53 pwdn-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
54 clocks = <&pck0>; 54 clocks = <&pck0>;
55 clock-names = "xvclk"; 55 clock-names = "xvclk";
56 assigned-clocks = <&pck0>; 56 assigned-clocks = <&pck0>;
57 assigned-clock-rates = <250000 57 assigned-clock-rates = <25000000>;
58 58
59 port { 59 port {
60 ov2640_0: endpoint { 60 ov2640_0: endpoint {
61 remote-endpoin 61 remote-endpoint = <&isi_0>;
62 bus-width = <8 62 bus-width = <8>;
63 }; 63 };
64 }; 64 };
65 }; 65 };
66 }; 66 };
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