linux-kernel - Re: [PATCH v4 07/18] phy: ti: phy-j721e-wiz: split wiz_clock

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Date: Fri, 5 Apr 2024 22:12:54 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Thomas Richard <thomas.richard@...tlin.com>
Cc: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Andy Shevchenko <andy@...nel.org>, Tony Lindgren <tony@...mide.com>,
	Haojian Zhuang <haojian.zhuang@...aro.org>,
	Vignesh R <vigneshr@...com>, Aaro Koskinen <aaro.koskinen@....fi>,
	Janusz Krzysztofik <jmkrzyszt@...il.com>,
	Andi Shyti <andi.shyti@...nel.org>, Peter Rosin <peda@...ntia.se>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
	linux-i2c@...r.kernel.org, linux-phy@...ts.infradead.org,
	linux-pci@...r.kernel.org, gregory.clement@...tlin.com,
	theo.lebrun@...tlin.com, thomas.petazzoni@...tlin.com,
	u-kumar1@...com
Subject: Re: [PATCH v4 07/18] phy: ti: phy-j721e-wiz: split wiz_clock_init()
 function

On 04-03-24, 16:35, Thomas Richard wrote:
> The wiz_clock_init() function mixes probe and hardware configuration.
> Rename the wiz_clock_init() to wiz_clock_probe() and move the hardware
> configuration part in a new function named wiz_clock_init().
> 
> This hardware configuration sequence must be called during the resume
> stage of the driver.

Do you have phy patches dependent on rest, if not consider submitting
them in a separate series

> 
> Signed-off-by: Thomas Richard <thomas.richard@...tlin.com>
> ---
>  drivers/phy/ti/phy-j721e-wiz.c | 67 ++++++++++++++++++++++++------------------
>  1 file changed, 38 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
> index 5fea4df9404e..0e3cb1ed5a52 100644
> --- a/drivers/phy/ti/phy-j721e-wiz.c
> +++ b/drivers/phy/ti/phy-j721e-wiz.c
> @@ -1076,26 +1076,12 @@ static int wiz_clock_register(struct wiz *wiz)
>  	return ret;
>  }
>  
> -static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
> +static void wiz_clock_init(struct wiz *wiz)
>  {
> -	const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
> -	struct device *dev = wiz->dev;
> -	struct device_node *clk_node;
> -	const char *node_name;
>  	unsigned long rate;
> -	struct clk *clk;
> -	int ret;
> -	int i;
> -
> -	clk = devm_clk_get(dev, "core_ref_clk");
> -	if (IS_ERR(clk))
> -		return dev_err_probe(dev, PTR_ERR(clk),
> -				     "core_ref_clk clock not found\n");
>  
> -	wiz->input_clks[WIZ_CORE_REFCLK] = clk;
> -
> -	rate = clk_get_rate(clk);
> -	if (rate >= 100000000)
> +	rate = clk_get_rate(wiz->input_clks[WIZ_CORE_REFCLK]);
> +	if (rate >= REF_CLK_100MHZ)
>  		regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x1);
>  	else
>  		regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x3);
> @@ -1119,6 +1105,39 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
>  		break;
>  	}
>  
> +	if (wiz->input_clks[WIZ_CORE_REFCLK1]) {
> +		rate = clk_get_rate(wiz->input_clks[WIZ_CORE_REFCLK1]);
> +		if (rate >= REF_CLK_100MHZ)
> +			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x1);
> +		else
> +			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x3);
> +

unnecessary empty line

> +	}
> +
> +	rate = clk_get_rate(wiz->input_clks[WIZ_EXT_REFCLK]);
> +	if (rate >= REF_CLK_100MHZ)
> +		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x0);
> +	else
> +		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x2);
> +}
> +
> +static int wiz_clock_probe(struct wiz *wiz, struct device_node *node)
> +{
> +	const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
> +	struct device *dev = wiz->dev;
> +	struct device_node *clk_node;
> +	const char *node_name;
> +	struct clk *clk;
> +	int ret;
> +	int i;
> +
> +	clk = devm_clk_get(dev, "core_ref_clk");
> +	if (IS_ERR(clk))
> +		return dev_err_probe(dev, PTR_ERR(clk),
> +				     "core_ref_clk clock not found\n");
> +
> +	wiz->input_clks[WIZ_CORE_REFCLK] = clk;
> +
>  	if (wiz->data->pma_cmn_refclk1_int_mode) {
>  		clk = devm_clk_get(dev, "core_ref1_clk");
>  		if (IS_ERR(clk))
> @@ -1126,12 +1145,6 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
>  					     "core_ref1_clk clock not found\n");
>  
>  		wiz->input_clks[WIZ_CORE_REFCLK1] = clk;
> -
> -		rate = clk_get_rate(clk);
> -		if (rate >= 100000000)
> -			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x1);
> -		else
> -			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x3);
>  	}
>  
>  	clk = devm_clk_get(dev, "ext_ref_clk");
> @@ -1141,11 +1154,7 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
>  
>  	wiz->input_clks[WIZ_EXT_REFCLK] = clk;
>  
> -	rate = clk_get_rate(clk);
> -	if (rate >= 100000000)
> -		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x0);
> -	else
> -		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x2);
> +	wiz_clock_init(wiz);
>  
>  	switch (wiz->type) {
>  	case AM64_WIZ_10G:
> @@ -1589,7 +1598,7 @@ static int wiz_probe(struct platform_device *pdev)
>  		goto err_get_sync;
>  	}
>  
> -	ret = wiz_clock_init(wiz, node);
> +	ret = wiz_clock_probe(wiz, node);
>  	if (ret < 0) {
>  		dev_warn(dev, "Failed to initialize clocks\n");
>  		goto err_get_sync;
> 
> -- 
> 2.39.2

-- 
~Vinod