[PATCH 6/6] pinctrl: mt8173: set GPIO16 to usb iddig mode
hongzhou.yang at mediatek.com
Wed May 11 19:55:01 PDT 2016
On Wed, 2016-05-11 at 19:09 -0700, Hongzhou Yang wrote:
> On Thu, 2016-05-12 at 09:41 +0800, chunfeng yun wrote:
> > Hi,
> > On Wed, 2016-05-11 at 11:32 -0700, Hongzhou Yang wrote:
> > > On Wed, 2016-05-11 at 13:56 +0200, Linus Walleij wrote:
> > > > On Tue, May 10, 2016 at 10:23 AM, Chunfeng Yun
> > > > <chunfeng.yun at mediatek.com> wrote:
> > > >
> > > > > the default mode of GPIO16 pin is gpio, when set EINT16 to
> > > > > IRQ_TYPE_LEVEL_HIGH, no interrupt is triggered, it can be
> > > > > fixed when set its default mode as usb iddig.
> > > > >
> > > > > Signed-off-by: Chunfeng Yun <chunfeng.yun at mediatek.com>
> > > >
> > >
> > > Chunfeng, GPIO16 can be used as EINT16 mode, but the pinmux should be 0.
> > > If you want to set its default mode to iddig, you should set it in dts.
> > >
> > I set it in DTS, but it didn't work, because when usb driver requested
> > IRQ, pinmux was switched back to default mode set by
> > MTK_EINT_FUNCTION().
> After confirmed, there are something wrong with data sheet and pinmux
> table, and GPIO16 can only receive interrupt by mode 1. So
> Acked-by: Hongzhou Yang <hongzhou.yang at mediatek.com>
We find there are some other pins still have the same problem, so please
hold on it. Sorry for so much noise.
More information about the linux-arm-kernel