Re: [PATCH 6/8] usb: misc: eud: Add High-Speed Phy control for EUD operations

Elson Serrao
2024-07-31T22:38:26Z

On 7/30/2024 10:39 PM, Krzysztof Kozlowski wrote:
> On 31/07/2024 00:24, Elson Roy Serrao wrote:
>> The Embedded USB Debugger(EUD) is a HS-USB on-chip hub to support the
>> debug and trace capabilities on Qualcomm devices. It is physically
>> present in between the usb connector and the usb controller. Being a
>> HS USB hub, it relies on HS Phy for its functionality. Add HS phy
>> support in the eud driver and control the phy during eud enable/disable
>> operations.
>>
>
> ...
>> static ssize_t enable_show(struct device *dev,
>> @@ -186,6 +216,11 @@ static int eud_probe(struct platform_device *pdev)
>>
>> chip->dev = &pdev->dev;
>>
>> + chip->usb2_phy = devm_phy_get(chip->dev, "usb2-phy");
>> + if (IS_ERR(chip->usb2_phy))
>> + return dev_err_probe(chip->dev, PTR_ERR(chip->usb2_phy),
>> + "no usb2 phy configured\n");
>
> This nicely breaks all users.
>
> NAK
>

As per my comment in [patch 1/8], phy would be a required property and hence I will first modify
and enable EUD on the existing user (sc7280 SoC) and then extend this to other users.

Thanks
Elson