| Message ID | 20240627-ixp4xx-dts-v1-1-cdbbe1150873@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM: dts: ixp4xx: nslu2: beeper uses PWM | expand |
diff --git a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-nslu2.dts b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-nslu2.dts index 2eec5f63d399..2f7c34c649ea 100644 --- a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-nslu2.dts +++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-nslu2.dts @@ -90,11 +90,18 @@ gpio-poweroff { timeout-ms = <5000>; }; - gpio-beeper { - compatible = "gpio-beeper"; + gpio_pwm: pwm { + #pwm-cells = <3>; + compatible = "pwm-gpio"; gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>; }; + beeper { + compatible = "pwm-beeper"; + pwms = <&gpio_pwm 0 1 0>; + beeper-hz = <1000>; + }; + soc { bus@c4000000 { /* The first 16MB region at CS0 on the expansion bus */
The beeper in the NSLU2 is just a GPIO connected to a speaker, so we need to use PWM on the GPIO to get any kind of sound out. Tested with some random beeps by enabling INPUT_EVDEV and running beep.c with e.g. beep 400 for a 400 Hz tone. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-nslu2.dts | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) --- base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 change-id: 20240627-ixp4xx-dts-6da9d0bf1ca4 Best regards,