Re: [PATCH v3 06/24] ARM: dts: imx6-sabrelite: add OV5642 and OV5640 camera sensors

From: Steve Longerbeam
Date: Mon Jan 16 2017 - 12:15:30 EST




On 01/16/2017 04:55 AM, Philipp Zabel wrote:
On Fri, 2017-01-13 at 15:04 -0800, Steve Longerbeam wrote:

@@ -299,6 +326,52 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";
+
+ ov5640: camera@40 {
+ compatible = "ovti,ov5640";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ov5640>;
+ clocks = <&mipi_xclk>;
+ clock-names = "xclk";
+ reg = <0x40>;
+ xclk = <22000000>;
This is superfluous, you can use clk_get_rate on mipi_xclk.
This property is actually there to tell the driver what to set the
rate to, with clk_set_rate(). So you are saying it would be better
to set the rate in the device tree and the driver should only
retrieve the rate?
Yes. Given that this is a reference clock input that is constant on a
given board and never changes during runtime, I think this is the
correct way. The clock will be fixed rate on most boards, I assume.

Ok, that makes sense, I'll make that change.

Steve