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:	Mon, 21 Dec 2015 14:06:27 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Rob Herring <robh@...nel.org>
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

Hi

On Sunday 20 December 2015 09:08 AM, Rob Herring wrote:
> 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.

hmm.. I will make this change in all the applicable patches.

Thanks
Kishon
> 
> 
>> +		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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