Re: [linux-sunxi] Re: [PATCH 3/3] arm64: allwinner: dts: h6: add Wi-Fi support for Pine H64 model A/B

[Icenowy Zheng]

ä 2018å7æ24æ GMT+08:00 äå10:41:51, Maxime Ripard <maxime.ripard@xxxxxxxxxxx> åå:
>On Tue, Jul 24, 2018 at 10:37:51AM +0800, Chen-Yu Tsai wrote:
>> On Tue, Jul 24, 2018 at 10:28 AM, Icenowy Zheng <icenowy@xxxxxxx>
>wrote:
>> >
>> >
>> > ä 2018å7æ24æ GMT+08:00 äå10:26:02, Chen-Yu Tsai <wens@xxxxxxxx> åå:
>> >>On Tue, Jul 24, 2018 at 10:23 AM, Icenowy Zheng <icenowy@xxxxxxx>
>> >>wrote:
>> >>>
>> >>>
>> >>> ä 2018å7æ24æ GMT+08:00 äå10:21:59, Chen-Yu Tsai <wens@xxxxxxxx>
>åå:
>> >>>>On Tue, Jul 24, 2018 at 9:15 AM, Icenowy Zheng <icenowy@xxxxxxx>
>> >>wrote:
>> >>>>> The Pine H64 model A has a Wi-Fi module connector and the model
>B
>> >>has
>> >>>>an
>> >>>>> on-board RTL8723BS Wi-Fi module.
>> >>>>>
>> >>>>> Add support for them. For model A, as it's not defaultly
>present,
>> >>>>keep
>> >>>>> it disabled now.
>> >>>>
>> >>>>Nope. Pine64 actually has two WiFi/BT modules. And they require
>> >>>>different
>> >>>>device tree snippets for both the WiFi and BT side. This is
>better
>> >>>>resolved
>> >>>>with device tree overlays.
>> >>>>
>> >>>>I have both, though I've yet found time to work on them.
>> >>>
>> >>> I have also both.
>> >>>
>> >>> The skeleton here can get the Wi-Fi of both to work.
>> >>
>> >>Cool. Then I can put away my RTL module for now. :)
>> >
>> > P.S. SDIO is auto detectable, and for BCM chips, the OOB interrupt
>> > is only a bonus function and it can fall back to standard in-band
>> > interrupt (which doesn't need special binding, and is currently
>> > used by mainline r8723bs driver.)
>> 
>> Correct. With BT you'll have serdev device nodes with different
>> compatibles. Then you'll have to resort to overlays, and you'd
>probably
>> end up adding WiFi OOB interrupt bits as well.
>> 
>> So the question remaining is: should we enable the MMC part, along
>> with power sequencing and regulator supplies, by default? Thinking
>> more about it, I'm actually OK with it. The board connectors are
>> clearly marked as being for a WiFi+BT module. The whole space on
>> the board is surrounded by a box in silkscreen. Sorry for the
>> initial nack.
>> 
>> Maxime, any thoughts?
>
>If there's a need for an overlay anyway, there's no real reason to
>enable it by default, especially if not everything is there.

Everything is there, for model B support.

>
>Maxime