Re: [PATCH 2/2] pinctrl: sunxi: Change mux setting on PI irq pins
From: Linus Walleij
Date: Tue Mar 08 2016 - 04:03:36 EST
On Mon, Feb 29, 2016 at 6:13 AM, Henry Paulissen <henry@xxxxxxxxxxxxxxxx> wrote:
> While I was testing irq's on the cubietruck I found a couple of
> not working irq pins. Further diving into the problem it opened
> up a mess called "manual".
> This so called manual (A20 user manual v1.3 dated 2014-10-10) says:
> Pin overview:
> Page 237: EINT26 is on mux 5.
> Page 288: EINT26 is on mux 6.
> The manual is so contradicting that further tests had to be made
> to see which of the 2 statements where correct.
> This patch is based on actual outcome of these tests and not what
> the manual says.
> Test procedure used:
> Connect a 1 pulse per second (GPS) line to the pin.
> echo pin### > /sys/class/gpio/export
> echo in > /sys/class/gpio/gpio###/direction
> echo rising > /sys/class/gpio/gpio###/edge
> Check /proc/interrupts if a irq was attached and if irq's where
> Hardware used:
> Henry Paulissen: Cubietruck
> Andere Przywara: BananaPi M1
> Tested-by: Andre Przywara <andre.przywara@xxxxxxx>
> Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
> Signed-off-by: Henry Paulissen <henry@xxxxxxxxxxxxxxxx>
Patch applied with Maxime's ACK.