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Date:   Mon, 4 May 2020 12:59:23 +0530
From:   Vinod Koul <vkoul@kernel.org>
To:     Dilip Kota <eswara.kota@linux.intel.com>
Cc:     linux-kernel@vger.kernel.org, kishon@ti.com,
        devicetree@vger.kernel.org, lee.jones@linaro.org, arnd@arndb.de,
        robh@kernel.org, andriy.shevchenko@intel.com,
        cheol.yong.kim@intel.com, chuanhua.lei@linux.intel.com,
        qi-ming.wu@intel.com, yixin.zhu@intel.com
Subject: Re: [PATCH v7 3/3] phy: intel: Add driver support for ComboPhy
Message-ID: <20200504072923.GN1375924@vkoul-mobl>
References: <cover.1588230494.git.eswara.kota@linux.intel.com>
 <af8a7d7025990d22f6062953247cf80e64c6fd2f.1588230494.git.eswara.kota@linux.intel.com>
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On 30-04-20, 15:15, Dilip Kota wrote:

> +enum {
> +	PHY_0,
> +	PHY_1,
> +	PHY_MAX_NUM

PHY_MAX_NUM = PHY_1?

> +static inline void combo_phy_w32_off_mask(void __iomem *base, unsigned int reg,
> +					  u32 mask, u32 val)
> +{
> +	u32 reg_val;
> +
> +	reg_val = readl(base + reg);
> +	reg_val &= ~mask;
> +	reg_val |= FIELD_PREP(mask, val);
> +	writel(reg_val, base + reg);

bypassing regmap here... why?

> +static int intel_cbphy_calibrate(struct phy *phy)
> +{
> +	struct intel_cbphy_iphy *iphy = phy_get_drvdata(phy);
> +	struct intel_combo_phy *cbphy = iphy->parent;
> +	void __iomem *cr_base = cbphy->cr_base;
> +	int val, ret, id;
> +
> +	if (cbphy->phy_mode != PHY_XPCS_MODE)
> +		return 0;
> +
> +	id = PHY_ID(iphy);
> +
> +	/* trigger auto RX adaptation */
> +	combo_phy_w32_off_mask(cr_base, CR_ADDR(PCS_XF_ATE_OVRD_IN_2, id),
> +			       ADAPT_REQ_MSK, 3);
> +	/* Wait RX adaptation to finish */
> +	ret = readl_poll_timeout(cr_base + CR_ADDR(PCS_XF_RX_ADAPT_ACK, id),
> +				 val, val & RX_ADAPT_ACK_BIT, 10, 5000);
> +	if (ret)
> +		dev_err(cbphy->dev, "RX Adaptation failed!\n");

you want to continue her and not return error?
-- 
~Vinod