linux-kernel - Re: [PATCH 1/2] usb: host: xhci-plat: Add quirk-no-64-bit-support

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Date:   Wed, 1 Nov 2023 10:13:08 +0530
From:   Naveen Kumar M <mnkumar@...gle.com>
To:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        royluo@...gle.com, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] usb: host: xhci-plat: Add quirk-no-64-bit-support

Adding the reviewers/maintainers I missed in the previous mail to this patch

On Tue, Oct 31, 2023 at 10:10 AM Naveen Kumar <mnkumar@...gle.com> wrote:
>
> From: Naveen Kumar M <mnkumar@...gle.com>
>
> This patch exposes the existing quirk XHCI_NO_64BIT_SUPPORT so that dwc3
> clients can also use this flag. Despite HCCPARAMS1 being set to 1 some
> clients may not support 64 bit addressing.
>
> Signed-off-by: Naveen Kumar M <mnkumar@...gle.com>
> ---
>  drivers/usb/host/xhci-plat.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index b93161374293..d5f37decb7da 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -249,6 +249,9 @@ int xhci_plat_probe(struct platform_device *pdev, struct device *sysdev, const s
>                 if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
>                         xhci->quirks |= XHCI_BROKEN_PORT_PED;
>
> +               if (device_property_read_bool(tmpdev, "quirk-no-64-bit-support"))
> +                       xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
> +
>                 device_property_read_u32(tmpdev, "imod-interval-ns",
>                                          &xhci->imod_interval);
>         }
> --
> 2.42.0.820.g83a721a137-goog
>