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Date: Thu, 15 Feb 2024 17:46:54 +0200
From: Andy Shevchenko <andy@kernel.org>
To: Thomas Richard <thomas.richard@bootlin.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <brgl@bgdev.pl>,
	Tony Lindgren <tony@atomide.com>,
	Haojian Zhuang <haojian.zhuang@linaro.org>,
	Vignesh R <vigneshr@ti.com>, Aaro Koskinen <aaro.koskinen@iki.fi>,
	Janusz Krzysztofik <jmkrzyszt@gmail.com>,
	Andi Shyti <andi.shyti@kernel.org>, Peter Rosin <peda@axentia.se>,
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	theo.lebrun@bootlin.com, thomas.petazzoni@bootlin.com,
	u-kumar1@ti.com
Subject: Re: [PATCH v3 14/18] phy: cadence-torrent: add suspend and resume
 support
Message-ID: <Zc4x7kvFfBI2sb_E@smile.fi.intel.com>
References: <20240102-j7200-pcie-s2r-v3-0-5c2e4a3fac1f@bootlin.com>
 <20240102-j7200-pcie-s2r-v3-14-5c2e4a3fac1f@bootlin.com>
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Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo

On Thu, Feb 15, 2024 at 04:17:59PM +0100, Thomas Richard wrote:
> Add suspend and resume support.
> 
> The already_configured flag is cleared during the suspend stage to force
> the PHY initialization during the resume stage.

> Based on the work of Th?o Lebrun <theo.lebrun@bootlin.com>

SoB/Co-developed-by ?

..

> +static int cdns_torrent_phy_suspend_noirq(struct device *dev)
> +{
> +	struct cdns_torrent_phy *cdns_phy = dev_get_drvdata(dev);
> +	int i;

Why signed?

> +	reset_control_assert(cdns_phy->phy_rst);
> +	reset_control_assert(cdns_phy->apb_rst);
> +	for (i = 0; i < cdns_phy->nsubnodes; i++)
> +		reset_control_assert(cdns_phy->phys[i].lnk_rst);
> +
> +	if (cdns_phy->already_configured)
> +		cdns_phy->already_configured = 0;
> +	else
> +		clk_disable_unprepare(cdns_phy->clk);
> +
> +	return 0;
> +}
> +
> +static int cdns_torrent_phy_resume_noirq(struct device *dev)
> +{
> +	struct cdns_torrent_phy *cdns_phy = dev_get_drvdata(dev);
> +	int node = cdns_phy->nsubnodes;
> +	int ret, i;

Ditto.

> +	ret = cdns_torrent_clk(cdns_phy);
> +	if (ret)
> +		goto clk_cleanup;
> +
> +	/* Enable APB */
> +	reset_control_deassert(cdns_phy->apb_rst);
> +
> +	if (cdns_phy->nsubnodes > 1) {
> +		ret = cdns_torrent_phy_configure_multilink(cdns_phy);
> +		if (ret)
> +			goto put_lnk_rst;
> +	}
> +
> +	return 0;
> +
> +put_lnk_rst:
> +	for (i = 0; i < node; i++)
> +		reset_control_assert(cdns_phy->phys[i].lnk_rst);
> +	reset_control_assert(cdns_phy->apb_rst);
> +	clk_disable_unprepare(cdns_phy->clk);
> +clk_cleanup:
> +	cdns_torrent_clk_cleanup(cdns_phy);
> +	return ret;
> +}

-- 
With Best Regards,
Andy Shevchenko