linux-kernel - Re: [PATCH v3 6/9] phy: ti-pipe3: use *syscon* framework API to power on/off the PHY

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Date:	Sat, 19 Dec 2015 21:38:37 -0600
From:	Rob Herring <robh@...nel.org>
To:	Kishon Vijay Abraham I <kishon@...com>
Cc:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, rogerq@...com, nsekhar@...com,
	linux-pci@...r.kernel.org, linux-usb@...r.kernel.org,
	tony@...mide.com, t-kristo@...com
Subject: Re: [PATCH v3 6/9] phy: ti-pipe3: use *syscon* framework API to
 power on/off the PHY

On Tue, Dec 15, 2015 at 02:46:05PM +0530, Kishon Vijay Abraham I wrote:
> Deprecate using phy-omap-control driver to power on/off the PHY and
> use *syscon* framework to do the same.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  Documentation/devicetree/bindings/phy/ti-phy.txt |   10 ++-
>  drivers/phy/phy-ti-pipe3.c                       |   90 ++++++++++++++++++----
>  2 files changed, 85 insertions(+), 15 deletions(-)

For the binding:

Acked-by: Rob Herring <robh@...nel.org>

One comment on the driver though.

[...]

> --- a/drivers/phy/phy-ti-pipe3.c
> +++ b/drivers/phy/phy-ti-pipe3.c

[...]

> @@ -144,18 +155,53 @@ static void ti_pipe3_disable_clocks(struct ti_pipe3 *phy);
>  
>  static int ti_pipe3_power_off(struct phy *x)
>  {
> +	u32 val;
> +	int ret;
>  	struct ti_pipe3 *phy = phy_get_drvdata(x);
>  
> -	omap_control_phy_power(phy->control_dev, 0);
> +	if (phy->phy_power_syscon) {

Writing this as:

if (!phy->phy_power_syscon) {
	...
	return 0;
}

//regmap code


will make it simpler to remove the deprecated code later.


> +		val = PIPE3_PHY_TX_RX_POWEROFF <<
> +			PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT;
> +
> +		ret = regmap_update_bits(phy->phy_power_syscon, phy->power_reg,
> +					 PIPE3_PHY_PWRCTL_CLK_CMD_MASK, val);
> +		if (ret < 0)
> +			return ret;
> +	} else {
> +		omap_control_phy_power(phy->control_dev, 0);
> +	}
>  
>  	return 0;
--
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