linux-kernel - Re: [PATCH 0/2] platform/x86: intel_cht

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Date:   Fri, 22 Feb 2019 17:31:32 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Andy Shevchenko <andy@...radead.org>
Cc:     Darren Hart <dvhart@...radead.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] platform/x86: intel_cht_int33fe: Start using software
 nodes

Hi,

On 2/19/19 12:59 PM, Heikki Krogerus wrote:
> Hi guys,
> 
> The software nodes support node hierarchy. By using them with fusb302
> we can add a separate fwnode also for the USB connector as a child of
> fusb302. We can then use the "standard" USB connector device
> properties with the connector node, and stop using the deprecated
> fusb302 specific properties.
> 
> Since the goal is to ultimately move to the software node API from the
> old device property API, converting also max17047 in this series.
> 
> If you test this now (before v5.1-rc1 is out), then the series depends
> Greg's latest usb-next:
> https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/log/?h=usb-next
> 
> and on a patch in Rafael's latest linux-next branch:
> https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=344798206f171c5abea7ab1f9762fa526d7f539d

Interesting series, I like the direction this is heading in.

Question, I currently have this hack to test DP over Type-C on the
GPD-pocket / GPD-win:

https://github.com/jwrdegoede/linux-sunxi/commit/f481b7032030dcdda1ccc39875eb59f996d3e775

Do this properly we need to add alt-modes support for usb-c-connector nodes to:
Documentation/devicetree/bindings/connector/usb-connector.txt

Do you have any ideas for what the binding this should look like, we need to
specify a svid, mode and vdo tripple in this case. Maybe use an u32 array
with 3, 6, 9, ... entries depending on how much alt-modes the fwnode needs to
specify ?

Regards,

Hans