Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1331808 > unrolled thread

Re: [PATCH 11/11] arm64: dts: add Pine64 support

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: [PATCH 11/11] arm64: dts: add Pine64 support Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-02-11 11:40 +0100

#1331808 — Re: [PATCH 11/11] arm64: dts: add Pine64 support

[Multipart message — attachments visible in raw view] — view raw

Hi Andre,

On Fri, Feb 05, 2016 at 10:04:01AM +0000, Andre Przywara wrote:
> >> +&uart0 {
> >> +	pinctrl-names = "default";
> >> +	pinctrl-0 = <&uart0_pins_a>;
> >> +	status = "okay";
> >> +};
> >> +
> >> +&uart2 {
> >> +	pinctrl-names = "default";
> >> +	pinctrl-0 = <&uart2_pins>;
> >> +	status = "okay";
> >> +};
> >> +
> >> +&uart3 {
> >> +	pinctrl-names = "default";
> >> +	pinctrl-0 = <&uart3_pins_a>;
> >> +	status = "okay";
> >> +};
> >> +
> >> +&uart4 {
> >> +	pinctrl-names = "default";
> >> +	pinctrl-0 = <&uart4_pins>;
> >> +	status = "okay";
> >> +};
> > 
> > Our policy for boards with "open" pin headers the user can plug
> > anything he wants is that unless the pin is explicitly dedicated to
> > that usage, we simply leave them aside so that we don't enforce
> > anything.
> 
> Makes sense, I just wonder what a user is expected to do if she wants to
> use the serial ports?
> Hack the DT?
> Use U-Boot to create those nodes on the fly?
> Use overlays?
> Directly setup serial ports from userland? (thinking of this bloody
> mechanism x86 (used to?) have)

Until we have a configfs overlay interface, then yeah, we have to hack
the DT.

That's not very much different than what you'd have to do if you
wanted some other bus exposed on those pins though.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web