linux-kernel - Re: [PATCH 2/2] phy: realtek: pcie: Add PCIe PHY support for Realtek DHC RTD SoCs

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Message-ID: <CAL_JsqLg7qRgk_P1FTMVeC3Q-CJHx6WXH4hwnoz_Z2LVO10gTA@mail.gmail.com>
Date:   Mon, 11 Dec 2023 11:51:18 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Tzuyi Chang <tychang@...ltek.com>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Stanley Chang <stanley_chang@...ltek.com>
Subject: Re: [PATCH 2/2] phy: realtek: pcie: Add PCIe PHY support for Realtek
 DHC RTD SoCs

On Fri, Dec 1, 2023 at 4:52 AM Tzuyi Chang <tychang@...ltek.com> wrote:
>
> Implement the phy driver to support PCIe PHY for Realtek DHC (Digital Home
> Center) RTD SoCs.
>
> Signed-off-by: Tzuyi Chang <tychang@...ltek.com>
> ---
>  drivers/phy/realtek/Kconfig        |   8 +
>  drivers/phy/realtek/Makefile       |   1 +
>  drivers/phy/realtek/phy-rtk-pcie.c | 738 +++++++++++++++++++++++++++++
>  3 files changed, 747 insertions(+)
>  create mode 100644 drivers/phy/realtek/phy-rtk-pcie.c
>
> diff --git a/drivers/phy/realtek/Kconfig b/drivers/phy/realtek/Kconfig
> index 75ac7e7c31ae..11c51f3714f1 100644
> --- a/drivers/phy/realtek/Kconfig
> +++ b/drivers/phy/realtek/Kconfig
> @@ -29,4 +29,12 @@ config PHY_RTK_RTD_USB3PHY
>           DWC3 USB IP. This driver will do the PHY initialization
>           of the parameters.
>
> +config PHY_RTD_PCIE
> +       tristate "Realtek RTD PCIe PHY driver"
> +       depends on OF
> +       select GENERIC_PHY
> +       help
> +         Enable this to support the PCIe PHY on Realtek DHC (digital home center)
> +         RTD series SoCs.
> +
>  endif # ARCH_REALTEK || COMPILE_TEST
> diff --git a/drivers/phy/realtek/Makefile b/drivers/phy/realtek/Makefile
> index ed7b47ff8a26..a1f0ad199476 100644
> --- a/drivers/phy/realtek/Makefile
> +++ b/drivers/phy/realtek/Makefile
> @@ -1,3 +1,4 @@
>  # SPDX-License-Identifier: GPL-2.0
>  obj-$(CONFIG_PHY_RTK_RTD_USB2PHY)      += phy-rtk-usb2.o
>  obj-$(CONFIG_PHY_RTK_RTD_USB3PHY)      += phy-rtk-usb3.o
> +obj-$(CONFIG_PHY_RTD_PCIE)                     += phy-rtk-pcie.o
> diff --git a/drivers/phy/realtek/phy-rtk-pcie.c b/drivers/phy/realtek/phy-rtk-pcie.c
> new file mode 100644
> index 000000000000..8ec845890271
> --- /dev/null
> +++ b/drivers/phy/realtek/phy-rtk-pcie.c
> @@ -0,0 +1,738 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Realtek DHC PCIe PHY driver
> + *
> + * Copyright (c) 2023 Realtek Semiconductor Corp.
> + */
> +
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>
> +#include <linux/nvmem-consumer.h>
> +#include <linux/of_address.h>
> +#include <linux/of_device.h>

You probably don't need this header and the implicit includes it makes
are dropped now in linux-next. Please check what you actually need and
make them explicit.

of_address.h is likely not needed either. Please check.

Rob