[PATCH 2/2] pinctrl: sunxi: Change mux setting on PI irq pins
maxime.ripard at free-electrons.com
Mon Feb 29 20:42:55 PST 2016
On Mon, Feb 29, 2016 at 12:13:27AM +0100, Henry Paulissen 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 at arm.com>
> Reviewed-by: Andre Przywara <andre.przywara at arm.com>
> Signed-off-by: Henry Paulissen <henry at nitronetworks.nl>
Acked-by: Maxime Ripard <maxime.ripard at free-electrons.com>
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
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