linux-kernel - Re: [PATCH 5/7] phy: spacemit: add USB3 support for K1 PCIe/USB3 combo PHY

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Message-ID: <74770bec-eeda-4823-b494-bea177fe26b0@kernel.org>
Date: Mon, 7 Apr 2025 15:28:28 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ze Huang <huangze@...t.edu.cn>, Vinod Koul <vkoul@...nel.org>,
 Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Yixun Lan <dlan@...too.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Alexandre Ghiti <alex@...ti.fr>
Cc: linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
 linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev,
 linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH 5/7] phy: spacemit: add USB3 support for K1 PCIe/USB3
 combo PHY

On 07/04/2025 14:38, Ze Huang wrote:
> Add support for USB 3.0 mode on the K1 PCIe/USB3 combo PHY. Currently,
> only USB mode is supported; PCIe support is not included in this change.
> 
> Signed-off-by: Ze Huang <huangze@...t.edu.cn>
> ---
>  drivers/phy/spacemit/Kconfig          |   8 ++
>  drivers/phy/spacemit/Makefile         |   1 +
>  drivers/phy/spacemit/phy-k1-combphy.c | 229 ++++++++++++++++++++++++++++++++++
>  3 files changed, 238 insertions(+)
> 
> diff --git a/drivers/phy/spacemit/Kconfig b/drivers/phy/spacemit/Kconfig
> index f0c2a33f53cc810e71c6140ae957aa68a2b6ff0c..12749aba756329cf64fb9199055ba484fe05f3ab 100644
> --- a/drivers/phy/spacemit/Kconfig
> +++ b/drivers/phy/spacemit/Kconfig
> @@ -10,3 +10,11 @@ config PHY_SPACEMIT_K1_USB2
>  	help
>  	  Enable this to support K1 USB 2.0 PHY driver. This driver takes care of
>  	  enabling and clock setup and will be used by K1 udc/ehci/otg driver.
> +
> +config PHY_SPACEMIT_K1_COMBPHY
> +	tristate "SpacemiT K1 PCIe/USB3 combo PHY support"
> +	depends on OF
> +	select GENERIC_PHY
> +	default ARCH_SPACEMIT && USB_DWC3_SPACEMIT
> +	help
> +	  USB3/PCIe Combo PHY Support for SpacemiT K1 SoC

Missing depends on ARCH_SPACEMIT || COMPILE_TEST

...


> +	priv->phy = devm_phy_create(dev, NULL, &spacemit_combphy_ops);
> +	if (IS_ERR(priv->phy))
> +		return dev_err_probe(dev, PTR_ERR(priv->phy),
> +				     "failed to create combphy\n");
> +
> +	dev_set_drvdata(dev, priv);
> +	phy_set_drvdata(priv->phy, priv);
Both make no sense. Look what this function does.

Best regards,
Krzysztof