[PATCH] arm64: dts: allwinner: a64: bananapi-m64: Add LED device node
From: Maxime Ripard <hidden>
Date: 2017-12-05 10:05:11
Also in:
linux-devicetree
Hi, On Sat, Dec 02, 2017 at 12:27:33AM +0800, Chen-Yu Tsai wrote:
The Bananapi-M64 has 3 LEDS in red, green, and blue. These are toggled via GPIO lines, which drive transistors that control current across the LEDS. The red LED is by default on, via an additional pull-up on the control line. We consider this means that it is a power indicator. So we set the "default-on" property for it. The pingroups the GPIO lines belong to require external regulators be enabled to be able to drive the GPIO high. These regulators also have other purposes. However the pin controller does not have bindings for regulators. Here we just set them to always-on.
I guess we should take the opportunity to do just that. We have been deferring this for quite some time now, this is a perfect occasion to do it once and for all :) Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20171205/67860803/attachment.sig>