| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | Atmel Image Sensor Interface (ISI) |
| 2 | ---------------------------------- |
| 3 | |
| 4 | Required properties for ISI: |
| 5 | - compatible: must be "atmel,at91sam9g45-isi" or "microchip,sam9x60-isi". |
| 6 | - reg: physical base address and length of the registers set for the device. |
| 7 | - interrupts: should contain IRQ line for the ISI. |
| 8 | - clocks: list of clock specifiers, corresponding to entries in the clock-names |
| 9 | property; please refer to clock-bindings.txt. |
| 10 | - clock-names: required elements: "isi_clk". |
| 11 | - pinctrl-names, pinctrl-0: please refer to pinctrl-bindings.txt. |
| 12 | |
| 13 | ISI supports a single port node with parallel bus. It shall contain one |
| 14 | 'port' child node with child 'endpoint' node. Please refer to the bindings |
| 15 | defined in Documentation/devicetree/bindings/media/video-interfaces.txt. |
| 16 | |
| 17 | Endpoint node properties |
| 18 | ------------------------ |
| 19 | |
| 20 | - bus-width: <8> or <10> (mandatory) |
| 21 | - hsync-active (default: active high) |
| 22 | - vsync-active (default: active high) |
| 23 | - pclk-sample (default: sample on falling edge) |
| 24 | - remote-endpoint: A phandle to the bus receiver's endpoint node (mandatory). |
| 25 | |
| 26 | Example: |
| 27 | |
| 28 | isi: isi@f0034000 { |
| 29 | compatible = "atmel,at91sam9g45-isi"; |
| 30 | reg = <0xf0034000 0x4000>; |
| 31 | interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>; |
| 32 | pinctrl-names = "default"; |
| 33 | pinctrl-0 = <&pinctrl_isi_data_0_7>; |
| 34 | clocks = <&isi_clk>; |
| 35 | clock-names = "isi_clk"; |
| 36 | port { |
| 37 | isi_0: endpoint { |
| 38 | remote-endpoint = <&ov2640_0>; |
| 39 | bus-width = <8>; |
| 40 | vsync-active = <1>; |
| 41 | hsync-active = <1>; |
| 42 | }; |
| 43 | }; |
| 44 | }; |
| 45 | |
| 46 | i2c1: i2c@f0018000 { |
| 47 | ov2640: camera@30 { |
| 48 | compatible = "ovti,ov2640"; |
| 49 | reg = <0x30>; |
| 50 | pinctrl-names = "default"; |
| 51 | pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>; |
| 52 | resetb-gpios = <&pioE 11 GPIO_ACTIVE_LOW>; |
| 53 | pwdn-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>; |
| 54 | clocks = <&pck0>; |
| 55 | clock-names = "xvclk"; |
| 56 | assigned-clocks = <&pck0>; |
| 57 | assigned-clock-rates = <25000000>; |
| 58 | |
| 59 | port { |
| 60 | ov2640_0: endpoint { |
| 61 | remote-endpoint = <&isi_0>; |
| 62 | bus-width = <8>; |
| 63 | }; |
| 64 | }; |
| 65 | }; |
| 66 | }; |