Hi Sakari,
Thanks for the review.
On Fri 18 May 2018 at 06:58, Sakari Ailus wrote:
Hi Rui,
On Thu, May 17, 2018 at 01:50:27PM +0100, Rui Miguel Silva
wrote:
Add bindings documentation for i.MX7 media drivers.
Signed-off-by: Rui Miguel Silva <rui.silva@xxxxxxxxxx>
---
.../devicetree/bindings/media/imx7.txt | 145
++++++++++++++++++
1 file changed, 145 insertions(+)
create mode 100644
Documentation/devicetree/bindings/media/imx7.txt
diff --git a/Documentation/devicetree/bindings/media/imx7.txt
b/Documentation/devicetree/bindings/media/imx7.txt
new file mode 100644
index 000000000000..161cff8e6442
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/imx7.txt
@@ -0,0 +1,145 @@
+Freescale i.MX7 Media Video Device
+==================================
+
+Video Media Controller node
+---------------------------
Note that DT bindings document the hardware, they are as such
not Linux
dependent.
This was removed in this series, however I removed it in the wrong
patch,
If you see patch 11/12 you will see this being removed. I will fix
this
in v5. Thanks for notice it.
+
+This is the media controller node for video capture support.
It is a
+virtual device that lists the camera serial interface nodes
that the
+media device will control.
Ditto.
+
+Required properties:
+- compatible : "fsl,imx7-capture-subsystem";
+- ports : Should contain a list of phandles pointing to
camera
+ sensor interface port of CSI
+
+example:
+
+capture-subsystem {
What's the purpose of this node, if you only refer to another
device? This
one rather does not look like a real device at all.
+ compatible = "fsl,imx7-capture-subsystem";
+ ports = <&csi>;
+};
+
+
+mipi_csi2 node
+--------------
+
+This is the device node for the MIPI CSI-2 receiver core in
i.MX7 SoC. It is
+compatible with previous version of Samsung D-phy.
+
+Required properties:
+
+- compatible : "fsl,imx7-mipi-csi2";
+- reg : base address and length of the register set
for the device;
+- interrupts : should contain MIPI CSIS interrupt;
+- clocks : list of clock specifiers, see
+
Documentation/devicetree/bindings/clock/clock-bindings.txt for
details;
+- clock-names : must contain "pclk", "wrap" and "phy"
entries, matching
+ entries in the clock property;
+- power-domains : a phandle to the power domain, see
+
Documentation/devicetree/bindings/power/power_domain.txt for
details.
+- reset-names : should include following entry "mrst";
+- resets : a list of phandle, should contain reset
entry of
+ reset-names;
+- phy-supply : from the generic phy bindings, a phandle to
a regulator that
+ provides power to MIPI CSIS core;
+- bus-width : maximum number of data lanes supported (SoC
specific);
+
+Optional properties:
+
+- clock-frequency : The IP's main (system bus) clock frequency
in Hz, default
+ value when this property is not specified is
166 MHz;
+
+port node
+---------
+
+- reg : (required) can take the values 0 or 1,
where 0 is the
+ related sink port and port 1 should be
the source one;
+
+endpoint node
+-------------
+
+- data-lanes : (required) an array specifying active
physical MIPI-CSI2
+ data input lanes and their mapping to logical
lanes; the
+ array's content is unused, only its length is
meaningful;
+
+- fsl,csis-hs-settle : (optional) differential receiver
(HS-RX) settle time;
Could you calculate this, as other drivers do? It probably
changes
depending on the device runtime configuration.
The only reference to possible values to this parameter is given
by
table in [0], can you point me out the formula for imx7 in the
documentation?
---
Cheers,
Rui
[0] https://community.nxp.com/thread/463777
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