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

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Date:   Wed, 25 Jul 2018 20:20:36 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     maxime.ripard@...tlin.com,
        Maxime Ripard <maxime.ripard@...tlin.com>
CC:     Chen-Yu Tsai <wens@...e.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] Re: [PATCH 3/3] arm64: allwinner: dts: h6: add Wi-Fi support for Pine H64 model A/B



于 2018年7月25日 GMT+08:00 下午8:19:47, Maxime Ripard <maxime.ripard@...tlin.com> 写到:
>On Tue, Jul 24, 2018 at 10:42:32PM +0800, Icenowy Zheng wrote:
>> 
>> 
>> 于 2018年7月24日 GMT+08:00 下午10:41:51, Maxime Ripard
><maxime.ripard@...tlin.com> 写到:
>> >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@...c.io>
>> >wrote:
>> >> >
>> >> >
>> >> > 于 2018年7月24日 GMT+08:00 上午10:26:02, Chen-Yu Tsai <wens@...e.org>
>写到:
>> >> >>On Tue, Jul 24, 2018 at 10:23 AM, Icenowy Zheng
><icenowy@...c.io>
>> >> >>wrote:
>> >> >>>
>> >> >>>
>> >> >>> 于 2018年7月24日 GMT+08:00 上午10:21:59, Chen-Yu Tsai
><wens@...e.org>
>> >写到:
>> >> >>>>On Tue, Jul 24, 2018 at 9:15 AM, Icenowy Zheng
><icenowy@...c.io>
>> >> >>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.
>
>Except BT?

Yes, not checked BT yet.

>
>Maxime