Re: [PATCH v1 2/2] net: phy: motorcomm: Add pad drive strength cfg support

[Guo Samin]

Re: [PATCH v1 2/2] net: phy: motorcomm: Add pad drive strength cfg support
From: Andrew Lunn <andrew@xxxxxxx>
to: Frank Sae <Frank.Sae@xxxxxxxxxxxxxx>
data: 2023/4/26

>>> +	u32 val;
>>>  
>>>  	ret = ytphy_rgmii_clk_delay_config_with_lock(phydev);
>>>  	if (ret < 0)
>>> @@ -1518,6 +1524,32 @@ static int yt8531_config_init(struct phy_device *phydev)
>>>  			return ret;
>>>  	}
>>>  
>>> +	if (!of_property_read_u32(node, "rx-clk-driver-strength", &val)) {
>>
>> Please check the val of "val", add the handle of default value.
> 
> You can assign val to 3, or better still some #define, before calling
> of_property_read_u32(). If the property is not found, val will retain
> that value, and you can then write it to the register.
> 
> But please do add range checks for when val is in DT. We don't want
> anybody using 42. -EINVAL should be returned.
> 
> 	Andrew

Thanks, good advice. 

Best regards,
Samin