Simon Kagstrom ha scritto:
> Hi Marco,
>
> On Fri, 08 Feb 2008 11:02:16 +0100
> Marco Stornelli <[EMAIL PROTECTED]> wrote:
>
>> how can specify a led device in a dts file? These leds are connected
>> with gpio to the microprocessor. I can't find anything like a led node
>> in the dts files of the other boards. Have you got any suggestions?
>
> Although I'm not sure if it's the "standard" way, we just added a
> "home-made" node like this:
>
> [EMAIL PROTECTED] {
> device_type = "leds";
> compatible = "reset-leds";
> reg = <c0018000 00008000>;
> };
>
> and then just get the info in the probe function for the led driver
> we placed in drivers/leds/:
>
> /* Get device info from OF tree */
> np = of_find_compatible_node(NULL, "leds", "reset-leds");
> if (!np) {
> dev_err(&pdev->dev, "Could not find device tree node for
> reset-leds\n");
> goto error_classdev;
> }
>
> if (of_address_to_resource(np, 0, &res)) {
> dev_err(&pdev->dev, "Could not convert reset-leds device tree
> address\n");
> of_node_put(np);
> goto error_classdev;
> }
> ...
>
> At least this was all the information we needed from the device tree.
>
> // Simon
>
Thanks. In this case where have you added the device registration? In
the probe function? Have you registered the driver with
of_register_platform_driver()?
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