linux-kernel - Re: [PATCH v2 1/4] phy: phy-stih407-usb: Add usb picoPHY driver found on stih407 SoC family

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Date:	Tue, 09 Sep 2014 11:08:11 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Peter Griffin <peter.griffin@...aro.org>,
	linux-kernel@...r.kernel.org, kishon@...com,
	srinivas.kandagatla@...il.com, maxime.coquelin@...com,
	patrice.chotard@...com, peppe.cavallaro@...com,
	lee.jones@...aro.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 1/4] phy: phy-stih407-usb: Add usb picoPHY driver found on stih407 SoC family

On Tuesday 09 September 2014 10:00:15 Peter Griffin wrote:
> This is the generic phy driver for the picoPHY ports used by the
> USB2 and USB3 Host controllers when controlling usb2/1.1 devices. It
> is found on STiH407 SoC family from STMicroelectronics.
> 
> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@...com>
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>

Looks good overall, just one question:

> +
> +	match = of_match_device(stih407_usb2_picophy_of_match, dev);
> +	if (!match)
> +		return -ENODEV;
....
> +
> +	phy = devm_phy_create(dev, NULL, match->data, NULL);
> +	if (IS_ERR(phy)) {
> +		dev_err(dev, "failed to create Display Port PHY\n");
> +		return PTR_ERR(phy);
> +	}
> +

There is only one entry in the match table, so it always points to
stih407_usb2_picophy_data. Do you have plans to add another set of
operations soon?
If not, just remove the .data pointer and hardcode the operations
in the devm_phy_create call.

	Arnd
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