linux-kernel - Re: [PATCH v7 13/19] phy: sun4i-usb: Allow reset line to be shared

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Message-ID: <869864f6f85c1f1d3427bf6be32d703758bdad71.camel@pengutronix.de>
Date:   Tue, 15 Jun 2021 13:25:42 +0200
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Andre Przywara <andre.przywara@....com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     Rob Herring <robh@...nel.org>, Icenowy Zheng <icenowy@...c.io>,
        Samuel Holland <samuel@...lland.org>,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...glegroups.com,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Ondrej Jirman <megous@...ous.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>, linux-phy@...ts.infradead.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH v7 13/19] phy: sun4i-usb: Allow reset line to be shared

On Tue, 2021-06-15 at 12:06 +0100, Andre Przywara wrote:
> The USB HCIs (and PHYs?) in Allwinner's newer generation SoCs (H616)
> rely on the reset line of USB PHY 2 to be de-asserted, even when only
> one of the other PHYs is actually in use.
> 
> To make those ports work, we include this reset line in the HCIs' resets
> property, which requires this line to be shareable.
> 
> Change the call to allocate the reset line to mark it as shared, to
> enable the other ports on those SoCs.
> 
> Signed-off-by: Andre Przywara <andre.przywara@....com>

Reviewed-by: Philipp Zabel <p.zabel@...gutronix.de>

regards
Philipp