Hi Stephen, > Stephen Warren <swarren@xxxxxxxxxxxxx> hat am 2. August 2016 um 19:19 > geschrieben: > > > On 07/26/2016 12:53 PM, Stefan Wahren wrote: > > The Raspberry Pi Zero is a minified version of model A+. It's > > notable there is no PWR LED and the ACT LED is inverted. > > Patches 3-6, > Acked-by: Stephen Warren <swarren@xxxxxxxxxx> > > > diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts > > b/arch/arm/boot/dts/bcm2835-rpi-zero.dts > > The following comment format is a bit strange, but I'm not sure there's > anything objectively better... the idea behind that was to provide valid values for every dr_mode with minimum effort. I see 2 alternative solutions: a) add different dr_mode examples to the dwc2 => doesn't work for all platforms b) add comments to drivers/usb/dwc2/platform.c => harder to find At the end the solution here is already obsolete. This patch series doesn't contain an update for the bcm2835_defconfig which should set the following: CONFIG_NOP_USB_XCEIV=y CONFIG_USB_GADGET=y After enabling these options another issue is revealed. Currently the dr_mode for all the other bcm283x boards isn't defined, which means "otg" instead of intended "host". But the dwc2 driver ignores this as long as CONFIG_USB_GADGET is not defined. So we need to define the dr_mode for all bcm283x boards. In order to avoid such massive copy & paste, we better define 3 dtsi files for each dr_mode. The only catch about this solution is the modes "otg" and "peripheral" wouldn't be referenced. I'll wait for John's feedback before sending a new version. Stefan > > > +&usb { > > + dr_mode = "host"; > > + h-rx-fifo-size = <774>; > > + h-np-tx-fifo-size = <256>; > > + h-tx-fifo-size = <512>; > > +/* > > + * Settings for otg > > + * > > + dr_mode = "otg"; > > + h-rx-fifo-size = <774>; > > + h-np-tx-fifo-size = <32>; > > + h-tx-fifo-size = <0>; > > + g-np-tx-fifo-size = <16>; > > + g-rx-fifo-size = <256>; > > + g-tx-fifo-size = <256 128 128 64 64 64 32>; > > + * > > + * Settings for peripheral > > + * > > + dr_mode = "peripheral"; > > + h-rx-fifo-size = <774>; > > + h-np-tx-fifo-size = <0>; > > + h-tx-fifo-size = <0>; > > + g-np-tx-fifo-size = <16>; > > + g-rx-fifo-size = <256>; > > + g-tx-fifo-size = <256 128 128 64 64 64 32>; > > + */ > > +}; > -- 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