On 2017-06-03 20:49, Shawn Guo wrote: > On Fri, May 26, 2017 at 08:06:09PM +0200, Uwe Kleine-König wrote: >> According to the binding documentation and the source code the >> vf610-gpio controller takes IRQ_TYPE_* as its flags values, not >> GPIO_ACTIVE_*. >> >> This patch uses the right variable type which yields the same result >> when compiled. Note that this might be wrong and actually >> IRQ_TYPE_LEVEL_LOW is intended by the dt author. >> >> Signed-off-by: Uwe Kleine-König <uwe@xxxxxxxxxxxxxxxxx> >> --- >> Hello, >> >> can somebody with the hardware or it's documentation please check which >> flag is the right one? > > @Stefan, can you help to confirm? > Thanks for spotting! According to the data sheet it is a low active signal, so I guess IRQ_TYPE_LEVEL_LOW is correct. But the driver actually explicitly requests IRQF_TRIGGER_FALLING, that has been the case since its inception. IMHO LEVEL_LOW should be more rigid since it helps for missed interrupt edges... -- Stefan >> >> Best regards >> Uwe >> >> arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi >> index 091b738041a0..3e0c84d79c43 100644 >> --- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi >> +++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi >> @@ -117,7 +117,7 @@ >> clocks = <&clk16m>; >> spi-max-frequency = <10000000>; >> interrupt-parent = <&gpio1>; >> - interrupts = <11 GPIO_ACTIVE_LOW>; >> + interrupts = <11 IRQ_TYPE_EDGE_RISING>; >> }; >> }; >> >> -- >> 2.11.0 >> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
