* [PATCH 0/1] ARM64: defconfig: add support for PWM LEDs
@ 2017-02-19 22:23 Martin Blumenstingl
2017-02-19 22:23 ` [PATCH 1/1] ARM64: defconfig: enable the leds-pwm driver and default-on trigger Martin Blumenstingl
0 siblings, 1 reply; 3+ messages in thread
From: Martin Blumenstingl @ 2017-02-19 22:23 UTC (permalink / raw)
To: linus-amlogic
Some ARM64 boards (such as the Khadas VIM and many other Amlogic based
devices) have one of the LEDs connected through a PWM controller. This
allows dimming the LED.
The ARM64 defconfig does not support the leds-pwm driver yet. Enabling
that also means that we have to enable the default-on LED trigger.
leds-gpio has a (trigger specific) "default-state" property which can
be used to set the default state, while with leds-pwm this has to be
configured using the default-on trigger.
Martin Blumenstingl (1):
ARM64: defconfig: enable the leds-pwm driver and default-on trigger
arch/arm64/configs/defconfig | 2 ++
1 file changed, 2 insertions(+)
--
2.11.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 1/1] ARM64: defconfig: enable the leds-pwm driver and default-on trigger
2017-02-19 22:23 [PATCH 0/1] ARM64: defconfig: add support for PWM LEDs Martin Blumenstingl
@ 2017-02-19 22:23 ` Martin Blumenstingl
2017-03-03 18:43 ` Kevin Hilman
0 siblings, 1 reply; 3+ messages in thread
From: Martin Blumenstingl @ 2017-02-19 22:23 UTC (permalink / raw)
To: linus-amlogic
This enables the leds-pwm driver to support LEDs which are PWM-powered
(and thus dimmable). Additionally we have to enable the "default-on"
trigger - this was not required before because the gpio-leds driver has
a separate "default-state" property which can be used to enable the LED
by default.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
arch/arm64/configs/defconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 33b744d54739..b36d02ce6154 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -394,8 +394,10 @@ CONFIG_MMC_SUNXI=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_PWM=y
CONFIG_LEDS_SYSCON=y
CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_RTC_CLASS=y
--
2.11.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 1/1] ARM64: defconfig: enable the leds-pwm driver and default-on trigger
2017-02-19 22:23 ` [PATCH 1/1] ARM64: defconfig: enable the leds-pwm driver and default-on trigger Martin Blumenstingl
@ 2017-03-03 18:43 ` Kevin Hilman
0 siblings, 0 replies; 3+ messages in thread
From: Kevin Hilman @ 2017-03-03 18:43 UTC (permalink / raw)
To: linus-amlogic
Martin Blumenstingl <martin.blumenstingl@googlemail.com> writes:
> This enables the leds-pwm driver to support LEDs which are PWM-powered
> (and thus dimmable). Additionally we have to enable the "default-on"
> trigger - this was not required before because the gpio-leds driver has
> a separate "default-state" property which can be used to enable the LED
> by default.
>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Applied to v4.12/defconfig of amlogic tree.
Kevin
> ---
> arch/arm64/configs/defconfig | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index 33b744d54739..b36d02ce6154 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -394,8 +394,10 @@ CONFIG_MMC_SUNXI=y
> CONFIG_NEW_LEDS=y
> CONFIG_LEDS_CLASS=y
> CONFIG_LEDS_GPIO=y
> +CONFIG_LEDS_PWM=y
> CONFIG_LEDS_SYSCON=y
> CONFIG_LEDS_TRIGGERS=y
> +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
> CONFIG_LEDS_TRIGGER_HEARTBEAT=y
> CONFIG_LEDS_TRIGGER_CPU=y
> CONFIG_RTC_CLASS=y
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-02-19 22:23 [PATCH 0/1] ARM64: defconfig: add support for PWM LEDs Martin Blumenstingl
2017-02-19 22:23 ` [PATCH 1/1] ARM64: defconfig: enable the leds-pwm driver and default-on trigger Martin Blumenstingl
2017-03-03 18:43 ` Kevin Hilman
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