linux-kernel - Re: [PATCH v3] ARM: dts: rockchip: Add usb host0 ohci node for rk3288

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Message-ID: <2630968.GxkqStg1Zh@phil>
Date:   Wed, 22 Jul 2020 20:49:25 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Robin Murphy <robin.murphy@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Suniel Mahesh <sunil@...rulasolutions.com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-amarula <linux-amarula@...rulasolutions.com>,
        William Wu <william.wu@...k-chips.com>
Subject: Re: [PATCH v3] ARM: dts: rockchip: Add usb host0 ohci node for rk3288

Am Mittwoch, 22. Juli 2020, 20:46:55 CEST schrieb Jagan Teki:
> Hi Heiko,
> 
> On Thu, Jul 23, 2020 at 12:04 AM Heiko Stuebner <heiko@...ech.de> wrote:
> >
> > Hi Jaganm
> >
> > Am Montag, 20. Juli 2020, 12:58:46 CEST schrieb Jagan Teki:
> > > rk3288 and rk3288w have a usb host0 ohci controller.
> > >
> > > Although rk3288 ohci doesn't actually work on hardware, but
> > > rk3288w ohci can work well.
> > >
> > > So add usb host0 ohci node in rk3288 dtsi and the quirk in
> > > ohci platform driver will disable ohci on rk3288.
> >
> > If I remember the discussion correctly, we expect the board dts
> > or the bootloader to enable the ohci, right?
> > So that block go away ... just making sure, I don't remember
> > untrue stuff ;-)
> 
> Our (with Robin) initial discussion [1] is to manage OHCI enablement
> in the bootloader but since it requires many checks at bootloader
> level we finally rely on board dts to enable it as normal.

ok, so I'll just drop this paragraph when applying.



> 
> [1] https://lkml.org/lkml/2020/7/3/424
> 
> Jagan.
>