Add binding documentation for Allwinner V3s CSI.
Acked-by: Maxime Ripard <[email protected]>
Acked-by: Sakari Ailus <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Yong Deng <[email protected]>
---
.../devicetree/bindings/media/sun6i-csi.txt | 59 ++++++++++++++++++++++
1 file changed, 59 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txt
diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt
new file mode 100644
index 000000000000..2ff47a9507a6
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt
@@ -0,0 +1,59 @@
+Allwinner V3s Camera Sensor Interface
+-------------------------------------
+
+Allwinner V3s SoC features two CSI module. CSI0 is used for MIPI CSI-2
+interface and CSI1 is used for parallel interface.
+
+Required properties:
+ - compatible: value must be "allwinner,sun8i-v3s-csi"
+ - reg: base address and size of the memory-mapped region.
+ - interrupts: interrupt associated to this IP
+ - clocks: phandles to the clocks feeding the CSI
+ * bus: the CSI interface clock
+ * mod: the CSI module clock
+ * ram: the CSI DRAM clock
+ - clock-names: the clock names mentioned above
+ - resets: phandles to the reset line driving the CSI
+
+Each CSI node should contain one 'port' child node with one child 'endpoint'
+node, according to the bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt. As mentioned
+above, the endpoint's bus type should be MIPI CSI-2 for CSI0 and parallel or
+Bt656 for CSI1.
+
+Endpoint node properties for CSI1
+---------------------------------
+
+- remote-endpoint : (required) a phandle to the bus receiver's endpoint
+ node
+- bus-width: : (required) must be 8, 10, 12 or 16
+- pclk-sample : (optional) (default: sample on falling edge)
+- hsync-active : (only required for parallel)
+- vsync-active : (only required for parallel)
+
+Example:
+
+csi1: csi@1cb4000 {
+ compatible = "allwinner,sun8i-v3s-csi";
+ reg = <0x01cb4000 0x1000>;
+ interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_CSI>,
+ <&ccu CLK_CSI1_SCLK>,
+ <&ccu CLK_DRAM_CSI>;
+ clock-names = "bus", "mod", "ram";
+ resets = <&ccu RST_BUS_CSI>;
+
+ port {
+ /* Parallel bus endpoint */
+ csi1_ep: endpoint {
+ remote-endpoint = <&adv7611_ep>;
+ bus-width = <16>;
+
+ /* If hsync-active/vsync-active are missing,
+ embedded BT.656 sync is used */
+ hsync-active = <0>; /* Active low */
+ vsync-active = <0>; /* Active low */
+ pclk-sample = <1>; /* Rising */
+ };
+ };
+};
--
1.8.3.1
On Tue, 2018-02-27 at 10:07 +0800, Yong Deng wrote:
> Add binding documentation for Allwinner V3s CSI.
>
> Acked-by: Maxime Ripard <[email protected]>
> Acked-by: Sakari Ailus <[email protected]>
> Reviewed-by: Rob Herring <[email protected]>
> Signed-off-by: Yong Deng <[email protected]>
> ---
> .../devicetree/bindings/media/sun6i-csi.txt | 59 ++++++++++++++++++++++
> 1 file changed, 59 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txt
>
> diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt
> new file mode 100644
> index 000000000000..2ff47a9507a6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt
> @@ -0,0 +1,59 @@
> +Allwinner V3s Camera Sensor Interface
> +-------------------------------------
> +
> +Allwinner V3s SoC features two CSI module. CSI0 is used for MIPI CSI-2
> +interface and CSI1 is used for parallel interface.
> +
> +Required properties:
> + - compatible: value must be "allwinner,sun8i-v3s-csi"
> + - reg: base address and size of the memory-mapped region.
> + - interrupts: interrupt associated to this IP
> + - clocks: phandles to the clocks feeding the CSI
> + * bus: the CSI interface clock
> + * mod: the CSI module clock
> + * ram: the CSI DRAM clock
> + - clock-names: the clock names mentioned above
> + - resets: phandles to the reset line driving the CSI
> +
> +Each CSI node should contain one 'port' child node with one child 'endpoint'
> +node, according to the bindings defined in
> +Documentation/devicetree/bindings/media/video-interfaces.txt. As mentioned
> +above, the endpoint's bus type should be MIPI CSI-2 for CSI0 and parallel or
> +Bt656 for CSI1.
> +
> +Endpoint node properties for CSI1
> +---------------------------------
> +
> +- remote-endpoint : (required) a phandle to the bus receiver's endpoint
> + node
> +- bus-width: : (required) must be 8, 10, 12 or 16
> +- pclk-sample : (optional) (default: sample on falling edge)
It would be helpful to state that 1 is rising edge and 0 is falling
edge, see for example ov5640.txt
regards
Philipp
On Tue, 27 Feb 2018 09:20:39 +0100
Philipp Zabel <[email protected]> wrote:
> On Tue, 2018-02-27 at 10:07 +0800, Yong Deng wrote:
> > Add binding documentation for Allwinner V3s CSI.
> >
> > Acked-by: Maxime Ripard <[email protected]>
> > Acked-by: Sakari Ailus <[email protected]>
> > Reviewed-by: Rob Herring <[email protected]>
> > Signed-off-by: Yong Deng <[email protected]>
> > ---
> > .../devicetree/bindings/media/sun6i-csi.txt | 59 ++++++++++++++++++++++
> > 1 file changed, 59 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txt
> >
> > diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt
> > new file mode 100644
> > index 000000000000..2ff47a9507a6
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt
> > @@ -0,0 +1,59 @@
> > +Allwinner V3s Camera Sensor Interface
> > +-------------------------------------
> > +
> > +Allwinner V3s SoC features two CSI module. CSI0 is used for MIPI CSI-2
> > +interface and CSI1 is used for parallel interface.
> > +
> > +Required properties:
> > + - compatible: value must be "allwinner,sun8i-v3s-csi"
> > + - reg: base address and size of the memory-mapped region.
> > + - interrupts: interrupt associated to this IP
> > + - clocks: phandles to the clocks feeding the CSI
> > + * bus: the CSI interface clock
> > + * mod: the CSI module clock
> > + * ram: the CSI DRAM clock
> > + - clock-names: the clock names mentioned above
> > + - resets: phandles to the reset line driving the CSI
> > +
> > +Each CSI node should contain one 'port' child node with one child 'endpoint'
> > +node, according to the bindings defined in
> > +Documentation/devicetree/bindings/media/video-interfaces.txt. As mentioned
> > +above, the endpoint's bus type should be MIPI CSI-2 for CSI0 and parallel or
> > +Bt656 for CSI1.
> > +
> > +Endpoint node properties for CSI1
> > +---------------------------------
> > +
> > +- remote-endpoint : (required) a phandle to the bus receiver's endpoint
> > + node
> > +- bus-width: : (required) must be 8, 10, 12 or 16
> > +- pclk-sample : (optional) (default: sample on falling edge)
>
> It would be helpful to state that 1 is rising edge and 0 is falling
> edge, see for example ov5640.txt
I think this is already documented at
Documentation/devicetree/bindings/media/video-interfaces.txt.
>
> regards
> Philipp
Thanks,
Yong