On 06/01/2021 15:53, Chen-Yu Tsai wrote:
Hi,
> On Wed, Jan 6, 2021 at 11:05 PM Andre Przywara <andre.przywara@xxxxxxx> wrote:
>>
>> The Pine64-LTS board features a blue status LED on pin PL7.
>
> I'd like some clarification about this.
>
> My Pine64-LTS was a used unit personally given to me by TL Lim, which came
> with LEDs that I assume were soldered on by hand as their mounting angles
> are slightly off. My Pine64+ (the original from the Kickstarter campaign)
> and SoPine baseboard (a new unit, also given to me by TL Lim) came without
> LEDs soldered on.
The situation is similar here ;-), and that's why I checked the pictures
in the store. The LEDs look slightly different (not angled), but the
location of the pads is the same and I see two LEDs on the picture. The
schematic seems to confirm both the pins, the polarity and the colour.
Hence I am highly confident that it's a blue LED on PL7, active low.
But we can wait for other people to confirm.
Thanks!
Andre
> I'm OK with adding the LED to the device tree. I'm just not sure about the
> color.
>
>
> ChenYu
>
>> Describe it in the DT.
>>
>> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
>> ---
>> .../boot/dts/allwinner/sun50i-a64-pine64-lts.dts | 11 +++++++++++
>> 1 file changed, 11 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dts
>> index 302e24be0a31..55bf4a0fc31c 100644
>> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dts
>> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dts
>> @@ -1,10 +1,21 @@
>> // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> // Copyright (c) 2018 ARM Ltd.
>>
>> +#include <dt-bindings/leds/common.h>
>> #include "sun50i-a64-sopine-baseboard.dts"
>>
>> / {
>> model = "Pine64 LTS";
>> compatible = "pine64,pine64-lts", "allwinner,sun50i-r18",
>> "allwinner,sun50i-a64";
>> +
>> + leds {
>> + compatible = "gpio-leds";
>> +
>> + status {
>> + function = LED_FUNCTION_STATUS;
>> + color = <LED_COLOR_ID_BLUE>;
>> + gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
>> + };
>> + };
>> };
>> --
>> 2.17.5
>>
>> --
>> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
>> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe@xxxxxxxxxxxxxxxx.
>> To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20210106150525.15403-3-andre.przywara%40arm.com.
