linux-kernel - Re: [PATCH v3 2/2] phy: bcm63xx-usbh: Add BCM63xx USBH driver

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Message-ID: <1f5f27d0d5321b3c9a1aed79877a2fd1f2aac6e3.camel@pengutronix.de>
Date:   Wed, 17 Jun 2020 11:26:49 +0200
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Álvaro Fernández Rojas <noltari@...il.com>,
        simon@...e.lp0.eu, jonas.gorski@...il.com, kishon@...com,
        vkoul@...nel.org, robh+dt@...nel.org, f.fainelli@...il.com,
        bcm-kernel-feedback-list@...adcom.com, krzk@...nel.org,
        gregkh@...uxfoundation.org, alcooperx@...il.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 2/2] phy: bcm63xx-usbh: Add BCM63xx USBH driver

Hi Álvaro,

On Tue, 2020-06-16 at 20:45 +0200, Álvaro Fernández Rojas wrote:
> Add BCM63xx USBH PHY driver for BMIPS.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
> ---
>  v3: introduce changes suggested by Florian:
>   - Add support for device mode.
>  v2: introduce changes suggested by Florian:
>   - Drop OF dependency (use device_get_match_data).
>   - Drop __initconst from variant tables.
>   - Use devm_clk_get_optional.
> 
>  drivers/phy/broadcom/Kconfig            |   9 +
>  drivers/phy/broadcom/Makefile           |   1 +
>  drivers/phy/broadcom/phy-bcm63xx-usbh.c | 456 ++++++++++++++++++++++++
>  3 files changed, 466 insertions(+)
>  create mode 100644 drivers/phy/broadcom/phy-bcm63xx-usbh.c
> 
[...]
> diff --git a/drivers/phy/broadcom/phy-bcm63xx-usbh.c b/drivers/phy/broadcom/phy-bcm63xx-usbh.c
> new file mode 100644
> index 000000000000..584807205166
> --- /dev/null
> +++ b/drivers/phy/broadcom/phy-bcm63xx-usbh.c
> @@ -0,0 +1,456 @@
[...]
> +	usbh->reset = devm_reset_control_get(dev, NULL);

Please use devm_reset_control_get_exclusive() instead when requesting
exclusive reset controls.

> +	if (IS_ERR(usbh->reset)) {
> +		if (PTR_ERR(usbh->reset) != -EPROBE_DEFER)
> +			dev_err(dev, "failed to get reset\n");
> +		return PTR_ERR(usbh->reset);
> +	}

regards
Philipp