On Thu, Jan 14, 2016 at 8:46 AM, Ben Hutchings <b...@decadent.org.uk> wrote: > On Thu, 2016-01-14 at 08:22 +0900, Roger Shimizu wrote: >> Thanks for your feedback, Uwe! >> >> On Thu, Jan 14, 2016 at 4:19 AM, Uwe Kleine-König >> <uwe+deb...@kleine-koenig.org> wrote: > [...] >> > Looking at the device tree I'd say it's correct that the gpio cannot be >> > controlled from user space because it's used to enable usb. >> >> I don't understand why it's not able to control the gpio. >> Could you please explain in detail? >> >> I'm the upstream contributor for this DTS. >> I know there may be something wrong with the gpio part, but I don't >> know how to know which part is not working. > [...] > > I think the 'gpios' property needs to be named 'gpio'.
Thanks for your reply! I changed partly / all "gpios" to "gpio", only to find more errors in dmesg. Original DTS has least error, which is the best so far. Below command also proves that "gpios" property is popular: grep -r gpios arch/arm/boot/dts/ Because previous 3.16 kernel (3.16.7-ckt4-3 or before) and recent 4.2/4.3/4.4 kernel are working fine, I still consider there's a regression somewhere in 3.16-ckt7 tree. Cheers, Roger
