Re: [PATCH v5 3/5] phy: snps-eusb2: Set phy type to EUSB2

Re: [PATCH v5 3/5] phy: snps-eusb2: Set phy type to EUSB2

[Sebastian Reichel]

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Hi,

On Thu, Jul 23, 2026 at 04:09:06PM +0530, Krishna Kurapati wrote:
> USB controllers like DWC3 are agnostic of the kind of phy (USB2/eUSB2)
> connected to it. Set the phy type to EUSB2 to let the controller know
> the phy type when queried during its probe.
> 
> Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
> ---
>  drivers/phy/phy-snps-eusb2.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/phy/phy-snps-eusb2.c b/drivers/phy/phy-snps-eusb2.c
> index f90bf7e95463..e139b17bcda5 100644
> --- a/drivers/phy/phy-snps-eusb2.c
> +++ b/drivers/phy/phy-snps-eusb2.c
> @@ -13,6 +13,8 @@
>  #include <linux/regulator/consumer.h>
>  #include <linux/reset.h>
>  
> +#include <dt-bindings/phy/phy.h>
> +
>  #define EXYNOS_USB_PHY_HS_PHY_CTRL_RST	(0x0)
>  #define USB_PHY_RST_MASK		GENMASK(1, 0)
>  #define UTMI_PORT_RST_MASK		GENMASK(5, 4)
> @@ -597,6 +599,8 @@ static int snps_eusb2_hsphy_probe(struct platform_device *pdev)
>  		return PTR_ERR(generic_phy);
>  	}
>  
> +	phy_set_type(generic_phy, PHY_TYPE_EUSB2);

Isn't there a potential race condition if it's handled in this way?

1. phy-snps-eusb2 probe: PHY is registered
2. dwc3 probes
3. phy-snps-eusb2 probe: PHY type is set

Greetings,

-- Sebastian

> +
>  	dev_set_drvdata(dev, phy);
>  	phy_set_drvdata(generic_phy, phy);
>  
> 
> -- 
> 2.34.1
> 
> 

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