linux-kernel - Re: [PATCH] usb: xhci: Enable LPM for VIA LABS VL805

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Date:   Mon, 10 Feb 2020 10:59:21 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Mathias Nyman <mathias.nyman@...el.com>
Cc:     linux-rpi-kernel@...ts.infradead.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: xhci: Enable LPM for VIA LABS VL805

On Mon, Jan 20, 2020 at 03:24:22PM +0100, Nicolas Saenz Julienne wrote:
> This PCIe controller chip is used on the Raspberry Pi 4 and multiple
> adapter cards. There is no publicly available documentation for the
> chip, yet both the downstream RPi4 kernel and the controller cards
> support/advertise LPM support.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---
>  drivers/usb/host/xhci-pci.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
> index 4917c5b033fa..c1976e98992b 100644
> --- a/drivers/usb/host/xhci-pci.c
> +++ b/drivers/usb/host/xhci-pci.c
> @@ -241,6 +241,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
>  			pdev->device == 0x3432)
>  		xhci->quirks |= XHCI_BROKEN_STREAMS;
>  
> +	if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483)
> +		xhci->quirks |= XHCI_LPM_SUPPORT;
> +
>  	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
>  			pdev->device == 0x1042)
>  		xhci->quirks |= XHCI_BROKEN_STREAMS;

Mathias, is this in your review queue?

thanks,

greg k-h