diff options
| author | Henry Paulissen <henry@nitronetworks.nl> | 2016-02-29 02:13:26 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-03-08 12:00:38 +0300 |
| commit | 9c24ef41fe128eb4c36b7786fced39ef5acd10de (patch) | |
| tree | 4b4a05fae990766965925d13795d33afb62e16e3 /drivers/pinctrl/sunxi | |
| parent | 8626ada871f123390b39910d47de84ab3cf67443 (diff) | |
| download | linux-9c24ef41fe128eb4c36b7786fced39ef5acd10de.tar.xz | |
pinctrl: sunxi: Remove non existing irq's
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>
Diffstat (limited to 'drivers/pinctrl/sunxi')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c b/drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c index cf1ce0c02600..25748b410f28 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c @@ -343,26 +343,22 @@ static const struct sunxi_desc_pin sun7i_a20_pins[] = { SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), SUNXI_FUNCTION(0x2, "nand0"), /* NCE4 */ - SUNXI_FUNCTION(0x3, "spi2"), /* CS0 */ - SUNXI_FUNCTION_IRQ(0x6, 12)), /* EINT12 */ + SUNXI_FUNCTION(0x3, "spi2")), /* CS0 */ SUNXI_PIN(SUNXI_PINCTRL_PIN(C, 20), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), SUNXI_FUNCTION(0x2, "nand0"), /* NCE5 */ - SUNXI_FUNCTION(0x3, "spi2"), /* CLK */ - SUNXI_FUNCTION_IRQ(0x6, 13)), /* EINT13 */ + SUNXI_FUNCTION(0x3, "spi2")), /* CLK */ SUNXI_PIN(SUNXI_PINCTRL_PIN(C, 21), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), SUNXI_FUNCTION(0x2, "nand0"), /* NCE6 */ - SUNXI_FUNCTION(0x3, "spi2"), /* MOSI */ - SUNXI_FUNCTION_IRQ(0x6, 14)), /* EINT14 */ + SUNXI_FUNCTION(0x3, "spi2")), /* MOSI */ SUNXI_PIN(SUNXI_PINCTRL_PIN(C, 22), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), SUNXI_FUNCTION(0x2, "nand0"), /* NCE7 */ - SUNXI_FUNCTION(0x3, "spi2"), /* MISO */ - SUNXI_FUNCTION_IRQ(0x6, 15)), /* EINT15 */ + SUNXI_FUNCTION(0x3, "spi2")), /* MISO */ SUNXI_PIN(SUNXI_PINCTRL_PIN(C, 23), SUNXI_FUNCTION(0x0, "gpio_in"), SUNXI_FUNCTION(0x1, "gpio_out"), |