linux-kernel - Re: [PATCH v8 13/14] net: phy: at803x: configure qca8084 work mode

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Date: Mon, 18 Dec 2023 11:33:10 +0800
From: Jie Luo <quic_luoj@...cinc.com>
To: Simon Horman <horms@...nel.org>
CC: <andrew@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <hkallweit1@...il.com>, <linux@...linux.org.uk>, <corbet@....net>,
        <p.zabel@...gutronix.de>, <f.fainelli@...il.com>,
        <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>
Subject: Re: [PATCH v8 13/14] net: phy: at803x: configure qca8084 work mode



On 12/17/2023 9:02 PM, Simon Horman wrote:
> On Fri, Dec 15, 2023 at 03:40:03PM +0800, Luo Jie wrote:
> 
> ...
> 
>> @@ -1038,6 +1045,46 @@ static int qca8084_common_clock_init(struct phy_device *phydev)
>>   	return clk_prepare_enable(priv->clk[MDIO_MASTER_AHB_CLK]);
>>   }
>>   
>> +static int qca8084_parse_and_set_work_mode(struct phy_device *phydev)
>> +{
>> +	struct device_node *node;
>> +	struct at803x_priv *priv;
>> +	u32 value, work_mode;
>> +	int ret;
>> +
>> +	node = phydev->mdio.dev.of_node;
>> +	priv = phydev->priv;
> 
> Hi Luo Jie,
> 
> a minor nit from my side: priv is set but otherwise unused in this function.

Thanks Simon, i will update it to remove it.

> 
>> +
>> +	/* The property "qcom,phy-work-mode" is only defined in one
>> +	 * PHY device tree node.
>> +	 */
>> +	ret = of_property_read_u32(node, "qcom,phy-work-mode", &value);
>> +	if (ret)
>> +		return ret == -EINVAL ? 0 : ret;
>> +
>> +	switch (value) {
>> +	case 0:
>> +		work_mode = QCA8084_WORK_MODE_QXGMII;
>> +		break;
>> +	case 1:
>> +		work_mode = QCA8084_WORK_MODE_QXGMII_PORT4_SGMII;
>> +		break;
>> +	case 2:
>> +		work_mode = QCA8084_WORK_MODE_SWITCH;
>> +		break;
>> +	case 3:
>> +		work_mode = QCA8084_WORK_MODE_SWITCH_PORT4_SGMII;
>> +		break;
>> +	default:
>> +		phydev_err(phydev, "invalid qcom,phy-work-mode %d\n", value);
>> +		return -EINVAL;
>> +	}
>> +
>> +	return qca8084_mii_modify(phydev, QCA8084_WORK_MODE_CFG,
>> +				  QCA8084_WORK_MODE_MASK,
>> +				  FIELD_PREP(QCA8084_WORK_MODE_MASK, work_mode));
>> +}
> 
> ...