Aw: [PATCH] MT7988 add LED Blue/Green + WPS/Reset Button

Weijie Gao weijie.gao at mediatek.com
Mon Sep 22 03:25:22 CEST 2025


On Sun, 2025-09-21 at 09:03 +0000, Frank Wunderlich wrote:
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> 
> 
> Hi
> 
> > Gesendet: Samstag, 20. September 2025 um 18:35
> > Von: EasyNetDev <devel at easynet.dev>
> > An: u-boot at lists.denx.de
> > CC: EasyNetDev <devel at easynet.dev>
> > Betreff: [PATCH] MT7988 add LED Blue/Green + WPS/Reset Button
> > 
> > MT7988 is missing LED Blue and Green from DTS.
> > EEPROM is hard wired to LED Green and you can't use it without
> > LED support.
> > WPS/Reset button is just for future customization of the U-Boot
> > booting.
> > 
> > Signed-off-by: EasyNetDev <devel at easynet.dev>
> 
> please use real name here :)
> 
> > ---
> >  arch/arm/dts/mt7988-rfb.dts    | 23 +++++++++++++++++++++++
> >  arch/arm/dts/mt7988-sd-rfb.dts | 23 +++++++++++++++++++++++
> >  2 files changed, 46 insertions(+)
> 
> i'm not sure if RFB (which dts you are patching) has also green/blue
> led and the buttons.

All MediaTek's RFBs have no LEDs. We discourage defining LEDs/buttons
in the RFB dts files.

> 
> If you really need this, you have to create an own devicetree for
> BPI-R4 (i guess you are
> using this board).
> 
> btw. in uboot eeprom can be written without setting the green
> led...somehow pinctrl driver
> behaves differently (or pin is already initialized to work).
> 
> regards Frank
> 



More information about the U-Boot mailing list