Hi Hans,
On Mon, Mar 06, 2017 at 03:56:07PM +0100, Hans Verkuil wrote:
> From: Hans Verkuil <[email protected]>
>
> Document the device tree bindings for this hardware.
>
> Mostly copied from the atmel-isc bindings.
>
> Signed-off-by: Hans Verkuil <[email protected]>
> ---
> .../devicetree/bindings/media/atmel-isi.txt | 90
> +++++++++++++---------
> 1 file changed, 55 insertions(+), 35 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/media/atmel-isi.txt
> b/Documentation/devicetree/bindings/media/atmel-isi.txt
> index 251f008f220c..d6e93e8216af 100644
> --- a/Documentation/devicetree/bindings/media/atmel-isi.txt
> +++ b/Documentation/devicetree/bindings/media/atmel-isi.txt
> @@ -1,51 +1,71 @@
> -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".
> +- pinctrl-names, pinctrl-0: please refer to pinctrl-bindings.txt.
>
> ISI supports a single port node with parallel bus. It should contain one
s/should/shall/ ?
> '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";
> +Endpoint node properties
> +------------------------
>
> - pinctrl-names = "default";
> - pinctrl-0 = <&pinctrl_isi>;
> +- bus-width: <8> or <10> (mandatory)
> +- hsync-active
> +- vsync-active
> +- pclk-sample
> +- remote-endpoint: A phandle to the bus receiver's endpoint node.
Are these required or are they optional?
The remote-endpoint is at least mandatory, isn't it?
>
> - port {
> - #address-cells = <1>;
> - #size-cells = <0>;
> +Example:
>
> - isi_0: endpoint {
> - remote-endpoint = <&ov2640_0>;
> - bus-width = <8>;
> - };
> +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 {
> + remote-endpoint = <&ov2640_0>;
> + bus-width = <8>;
> + vsync-active = <1>;
> + hsync-active = <1>;
> };
> };
> +};
> +
> +i2c1: i2c@f0018000 {
> + status = "okay";
>
> - i2c1: i2c@f0018000 {
> - ov2640: camera@0x30 {
> - compatible = "ovti,ov2640";
> - reg = <0x30>;
> + ov2640: camera@30 {
> + compatible = "ovti,ov2640";
> + reg = <0x30>;
> + pinctrl-names = "default";
> + 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 {
> - ov2640_0: endpoint {
> - remote-endpoint = <&isi_0>;
> - bus-width = <8>;
> - };
> + port {
> + ov2640_0: endpoint {
> + remote-endpoint = <&isi_0>;
> + bus-width = <8>;
> };
> };
> };
> +};
--
Kind regards,
Sakari Ailus
e-mail: [email protected] XMPP: [email protected]
