linux-kernel - Re: [PATCH v3 05/14] phy: qcom: qmp-usbc: Add DP-related fields for USB/DP switchable PHY

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Message-ID: <8922ae6e-9be6-49f7-ac84-d4a1dd60421b@oss.qualcomm.com>
Date: Fri, 22 Aug 2025 14:59:45 +0800
From: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar
 <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>, Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org, fange.zhang@....qualcomm.com,
        yongxing.mou@....qualcomm.com, tingwei.zhang@....qualcomm.com,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Subject: Re: [PATCH v3 05/14] phy: qcom: qmp-usbc: Add DP-related fields for
 USB/DP switchable PHY


On 8/20/2025 7:47 PM, Dmitry Baryshkov wrote:
> On Wed, Aug 20, 2025 at 05:34:47PM +0800, Xiangxu Yin wrote:
>> Extend qmp_usbc_offsets and qmp_phy_cfg with DP-specific fields,
>> including register offsets, init tables, and callback hooks. Also
>> update qmp_usbc struct to track DP-related resources and state.
>> This enables support for USB/DP switchable Type-C PHYs that operate
>> in either mode.
>>
>> Signed-off-by: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
>> ---
>>  drivers/phy/qualcomm/phy-qcom-qmp-usbc.c | 73 ++++++++++++++++++++++++--------
>>  1 file changed, 55 insertions(+), 18 deletions(-)
>>
>>  
>> +	struct regmap *tcsr_map;
>> +	u32 vls_clamp_reg;
>> +	u32 dp_phy_mode_reg;
>> +
>>  	struct mutex phy_mutex;
>>  
>> +	struct phy *usb_phy;
> Should be a part of the previous patch.


Ok, will move usb_phy rename to patch 'Rename USB-specific ops', 

then shall I need drop the |Reviewed-by| tag in that patch since it will change?


>>  	enum phy_mode mode;
>>  	unsigned int usb_init_count;
>>  
>> -	struct phy *phy;
> Similarly.


Ack.


>> -
>> -	struct clk_fixed_rate pipe_clk_fixed;
>> +	struct phy *dp_phy;
>> +	unsigned int dp_aux_cfg;
>> +	struct phy_configure_opts_dp dp_opts;
>> +	unsigned int dp_init_count;
>>  
>>  	struct typec_switch_dev *sw;
>>  	enum typec_orientation orientation;
>> @@ -874,11 +911,11 @@ static int qmp_usbc_typec_switch_set(struct typec_switch_dev *sw,
>>  	qmp->orientation = orientation;
>>  
>>  	if (qmp->usb_init_count) {
>> -		qmp_usbc_usb_power_off(qmp->phy);
>> -		qmp_usbc_com_exit(qmp->phy);
>> +		qmp_usbc_usb_power_off(qmp->usb_phy);
>> +		qmp_usbc_com_exit(qmp->usb_phy);
>>  
>> -		qmp_usbc_com_init(qmp->phy);
>> -		qmp_usbc_usb_power_on(qmp->phy);
>> +		qmp_usbc_com_init(qmp->usb_phy);
>> +		qmp_usbc_usb_power_on(qmp->usb_phy);
> and these.


Ack.


>>  	}
>>  
>>  	mutex_unlock(&qmp->phy_mutex);
>> @@ -1106,14 +1143,14 @@ static int qmp_usbc_probe(struct platform_device *pdev)
>>  	if (ret)
>>  		goto err_node_put;
>>  
>> -	qmp->phy = devm_phy_create(dev, np, &qmp_usbc_usb_phy_ops);
>> -	if (IS_ERR(qmp->phy)) {
>> -		ret = PTR_ERR(qmp->phy);
>> +	qmp->usb_phy = devm_phy_create(dev, np, &qmp_usbc_usb_phy_ops);
>> +	if (IS_ERR(qmp->usb_phy)) {
>> +		ret = PTR_ERR(qmp->usb_phy);
>>  		dev_err(dev, "failed to create PHY: %d\n", ret);
>>  		goto err_node_put;
>>  	}
>>  
>> -	phy_set_drvdata(qmp->phy, qmp);
>> +	phy_set_drvdata(qmp->usb_phy, qmp);
>>  
>>  	of_node_put(np);
>>  
>>
>> -- 
>> 2.34.1
>>