linux-kernel - Re: [PATCH v3 2/2] phy: intel-lgm-emmc: Add support for eMMC PHY

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Date:   Wed, 21 Aug 2019 15:01:42 +0300
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
Cc:     kishon@...com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, cheol.yong.kim@...el.com,
        qi-ming.wu@...el.com, peter.harliman.liem@...el.com
Subject: Re: [PATCH v3 2/2] phy: intel-lgm-emmc: Add support for eMMC PHY

On Wed, Aug 21, 2019 at 06:11:18PM +0800, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> 
> Add support for eMMC PHY on Intel's Lightning Mountain SoC.

> --- /dev/null
> +++ b/drivers/phy/intel/Kconfig
> @@ -0,0 +1,8 @@

Missed licence tag

> +#
> +# Phy drivers for Intel X86 LGM platform
> +#

> +#define EMMC_PHYCTRL2_REG	0xb0
> +#define FRQSEL_25M		0

I would still leave 1 and 2 with corresponding names for sake of documentation.

> +#define FRQSEL_150M		3
> +#define FRQSEL_MASK		GENMASK(24, 22)
> +#define FRQSEL_SHIFT(x)		(((x) << 22) & FRQSEL_MASK)

> +	unsigned int freqsel = 0;

Redundant assignment.

> +	udelay(5);

+ blank line

> +	regmap_update_bits(priv->syscfg, EMMC_PHYCTRL1_REG, PDB_MASK, 1);

And here missed to address one of my comments.

> +	/*
> +	 * We purposely get the clock here and not in probe to avoid the
> +	 * circular dependency problem.  We expect:

We don't use double space

> +	 * - PHY driver to probe
> +	 * - SDHCI driver to start probe
> +	 * - SDHCI driver to register it's clock
> +	 * - SDHCI driver to get the PHY
> +	 * - SDHCI driver to init the PHY
> +	 *
> +	 * The clock is optional, so upon any error just return it like
> +	 * any other error to user.
> +	 *
> +	 */

> +	struct device *dev = &pdev->dev;
> +	struct intel_emmc_phy *priv;
> +	struct phy *generic_phy;
> +	struct phy_provider *phy_provider;

> +	struct device_node *np = dev->of_node;

Group it with other assignment(s), i.e. dev = ... above.

	struct device *dev = ...;
	struct device_node *np = ...;

-- 
With Best Regards,
Andy Shevchenko