linux-kernel - Re: [PATCH 1/5] phy: sun4i: add support for USB phy0

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Message-ID: <20141028214756.GF9255@lukather>
Date:	Tue, 28 Oct 2014 22:47:56 +0100
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Roman Byshko <rbyshko@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, Kishon Vijay Abraham I <kishon@...com>,
	Russell King <linux@....linux.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH 1/5] phy: sun4i: add support for USB phy0

Hi Roman,

Thanks for your patches

On Mon, Oct 27, 2014 at 10:43:01PM +0100, Roman Byshko wrote:
> The driver for sun4i USB phys currently supports
> only phy1 and phy2 which are used for USB host
> controllers. This patch adds support for USB phy0,
> which is used by the musb hdrc USB controller.

Like Andreas already pointed out, your signed-off-by is missing from
all your patches.

> ---
>  drivers/phy/phy-sun4i-usb.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
> index 0baf5ef..a24728b 100644
> --- a/drivers/phy/phy-sun4i-usb.c
> +++ b/drivers/phy/phy-sun4i-usb.c
> @@ -157,6 +157,10 @@ static int sun4i_usb_phy_init(struct phy *_phy)
>  		return ret;
>  	}
>  
> +	/* Regulation 45 ohms */
> +	if (phy->index == 0)
> +		sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);

What is this code supposed to do?

Some define for this bit and/or a better comment would be nice.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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