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Date: Wed, 19 Feb 2020 13:39:33 +0100 From: Nicolas Saenz Julienne <nsaenzjulienne@...e.de> To: linux-kernel@...r.kernel.org, Mathias Nyman <mathias.nyman@...el.com> Cc: linux-usb@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, bcm-kernel-feedback-list@...adcom.com, f.fainelli@...il.com, gregkh@...uxfoundation.org, tim.gover@...pberrypi.org, linux-pci@...r.kernel.org, wahrenst@....net, Nicolas Saenz Julienne <nsaenzjulienne@...e.de> Subject: [PATCH v2 4/4] USB: pci-quirks: Add Raspberry Pi 4 quirk On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be loaded directly from an EEPROM or, if not present, by the SoC's VideCore. Inform VideCore that VL805 was just reset. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de> --- drivers/usb/host/pci-quirks.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index beb2efa71341..aee2eaa3f0e1 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -16,6 +16,9 @@ #include <linux/export.h> #include <linux/acpi.h> #include <linux/dmi.h> + +#include <soc/bcm2835/raspberrypi-firmware.h> + #include "pci-quirks.h" #include "xhci-ext-caps.h" @@ -1243,11 +1246,26 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) static void quirk_usb_early_handoff(struct pci_dev *pdev) { + int ret; + /* Skip Netlogic mips SoC's internal PCI USB controller. * This device does not need/support EHCI/OHCI handoff */ if (pdev->vendor == 0x184e) /* vendor Netlogic */ return; + + if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) { + ret = rpi_firmware_init_vl805(pdev); + if (ret) + /* + * Firmware might be outdated, or else, something + * failed, keep going and hope for the best. + */ + dev_warn(&pdev->dev, + "Failed to load VL805's firmware: %d\n", + ret); + } + if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI && pdev->class != PCI_CLASS_SERIAL_USB_OHCI && pdev->class != PCI_CLASS_SERIAL_USB_EHCI && -- 2.25.0
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