On Thu 2019-03-14 15:06:19, Rasmus Villemoes wrote:
> It can be quite convenient to initialize a netdev-triggered LED with a
> device name and setting the rx,tx,link properties from device tree,
> instead of having to do that in an init script (or udev rule) in
> userspace.
>
> My main motivation for this is to be able to switch away from the
> deprecated CONFIG_CAN_LEDS. The example added to common.txt
> corresponds to switching linux,default-trigger = "can0-rxtx" to
> "netdev" and adding the indicated netdev subnode.
>
> Signed-off-by: Rasmus Villemoes <li...@rasmusvillemoes.dk>
> ---
> .../devicetree/bindings/leds/common.txt | 11 +++++++
> drivers/leds/trigger/ledtrig-netdev.c | 30 +++++++++++++++++++
> 2 files changed, 41 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/leds/common.txt
> b/Documentation/devicetree/bindings/leds/common.txt
> index 7cb88460a47c..f8078c4cf6f8 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -43,6 +43,17 @@ Optional properties for child nodes:
> Documentation/ABI/testing/sysfs-class-led-trigger-netdev)
> to reflect the state and activity of a net device.
>
> + The optional child node netdev can be used to
> + configure initial values for the link, rx, tx and
> + device_name properties. For example,
> +
> + netdev {
> + rx;
> + tx;
> + link;
> + device-name = "can0";
Well, NAK, as explained before. Use phandle.
Alternatively, adding comment why CONFIG_CAN_LEDS can not be removed
just yet near the deprecation note would be acceptable.
Pavel
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