On 02/26/2013 04:01 AM, Javier Martinez Canillas wrote:
[snip]
> I was wondering if the level/edge settings for gpios is working on OMAP.
>
> I'm adding DT support for an SMSC911x ethernet chip connected to the
> GPMC for an OMAP3 SoC based board.
>
> In the smsc911x driver probe function (smsc911x_drv_probe() in
> drivers/net/ethernet/smsc/smsc911x.c), a call to request_irq() with
> the flag IRQF_TRIGGER_LOW is needed because of the wiring on my board.
>
> Reading the gpio-omap.txt documentation it says that #interrupt-cells
> should be <2> and that a value of 8 is "active low level-sensitive".
>
> So I tried this:
>
> &gpmc {
> ethernet@5,0 {
> pinctrl-names = "default";
> pinctrl-0 = <&smsc911x_pins>;
> compatible = "smsc,lan9221", "smsc,lan9115";
> reg = <5 0 0xff>; /* CS5 */
> interrupt-parent = <&gpio6>;
> interrupts = <16 8>; /* gpio line 176 */
> interrupt-names = "smsc911x irq";
> vmmc-supply = <&vddvario>;
> vmmc_aux-supply = <&vdd33a>;
> reg-io-width = <4>;
By the way, reg-io-width for omap does not look correct. The GPMC only
supports 8-bit or 16-bit devices IIRC. I believe all my omap boards use
16-bit.
Cheers
Jon
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