On Mon, 07 Sep 2015 15:20:42 +0200 Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Tuesday 01 September 2015 17:23:10 Alban Bedel wrote: > > > > this serie add a driver for the USB phy on the ATH79 SoCs and enable the > > USB port on the TL-WR1043ND. The phy controller is really trivial as it > > only use reset lines. > > > > Is this a common thing to have? If other PHY devices are like this, we > could instead add a simple generic PHY driver that just asserts all > its reset lines in the order as provided, rather than making this a > hardware specific driver that ends up getting copied several times. I don't know how common it is. However I agree that a simple driver that can start a clock and toggle a few GPIO and/or reset would make sense. However in the case of the ATH79 SoC some models have a reset line that is misused to force the PHY in sleep mode. Sadly this extra reset must be asserted for the PHY to work, so it wouldn't fit in such a generic design. Still we could have such a generic driver and let the ATH79 driver build on top of it. Honestly that's what I wanted to do, but getting generic drivers with DT support accepted is not easy. That's why I went with this driver, it is technically inferior but much easier to get considered for merging. Alban -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
