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9c24ef41fe
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 233: EINT12 is on pin PC19 mux6.
Page 236: EINT12 is on pin PH12 mux6.
Now, it is a bit strange to have the same IRQ on 2 different pins,
but I guess this could still be possible hardware wise. But then:
Pin registers:
Page 253: EINT12 is *not* on pin PC19.
Page 281: EINT12 is on pin PH12.
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
received.
Signed-off-by: Henry Paulissen <henry@nitronetworks.nl>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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| .. | ||
| Kconfig | ||
| Makefile | ||
| pinctrl-sun4i-a10.c | ||
| pinctrl-sun5i-a10s.c | ||
| pinctrl-sun5i-a13.c | ||
| pinctrl-sun6i-a31-r.c | ||
| pinctrl-sun6i-a31.c | ||
| pinctrl-sun6i-a31s.c | ||
| pinctrl-sun7i-a20.c | ||
| pinctrl-sun8i-a23-r.c | ||
| pinctrl-sun8i-a23.c | ||
| pinctrl-sun8i-a33.c | ||
| pinctrl-sun8i-a83t.c | ||
| pinctrl-sun8i-h3-r.c | ||
| pinctrl-sun8i-h3.c | ||
| pinctrl-sun9i-a80-r.c | ||
| pinctrl-sun9i-a80.c | ||
| pinctrl-sunxi.c | ||
| pinctrl-sunxi.h | ||