linux-kernel - Re: [PATCH v3] arm64: allwinner: a64: Add Amarula A64-Relic initial support

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Message-ID: <20180523081830.4ly6sj34reabbttn@flea>
Date:   Wed, 23 May 2018 10:18:30 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        Icenowy Zheng <icenowy@...c.io>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH v3] arm64: allwinner: a64: Add Amarula A64-Relic initial
 support

On Wed, May 23, 2018 at 11:44:56AM +0530, Jagan Teki wrote:
> On Tue, May 22, 2018 at 8:00 PM, Maxime Ripard
> <maxime.ripard@...tlin.com> wrote:
> > On Tue, May 22, 2018 at 06:52:28PM +0530, Jagan Teki wrote:
> >> Amarula A64-Relic is Allwinner A64 based IoT device, which support
> >> - Allwinner A64 Cortex-A53
> >> - Mali-400MP2 GPU
> >> - AXP803 PMIC
> >> - 1GB DDR3 RAM
> >> - 8GB eMMC
> >> - AP6330 Wifi/BLE
> >> - MIPI-DSI
> >> - CSI: OV5640 sensor
> >> - USB OTG
> >
> > You claim that this is doing OTG...
> >
> > [..]
> >
> >> +&usb_otg {
> >> +     dr_mode = "peripheral";
> >> +     status = "okay";
> >> +};
> >
> > ... and yet you're setting it as peripheral...
> 
> Though it claims OTG, board doesn't have any USB ports to operate(not
> even Mini-AB) the only way to use the board as peripheral to transfer
> images from host.

I'm not sure what you mean here. If there's no USB connector, why do
you even enable it?

maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

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