diff options
Diffstat (limited to 'usb-xhci-Raspberry-Pi-FW-loader-for-VIA-VL805.patch')
| -rw-r--r-- | usb-xhci-Raspberry-Pi-FW-loader-for-VIA-VL805.patch | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/usb-xhci-Raspberry-Pi-FW-loader-for-VIA-VL805.patch b/usb-xhci-Raspberry-Pi-FW-loader-for-VIA-VL805.patch deleted file mode 100644 index 7bf875c6d..000000000 --- a/usb-xhci-Raspberry-Pi-FW-loader-for-VIA-VL805.patch +++ /dev/null @@ -1,91 +0,0 @@ -From eb05efbfe58a7815957844e6dbe28735e85393cf Mon Sep 17 00:00:00 2001 -From: Tim Gover <990920+timg236@users.noreply.github.com> -Date: Wed, 15 Jan 2020 11:26:19 +0000 -Subject: [PATCH] usb: xhci: Raspberry Pi FW loader for VIA VL805 - -The VL805 FW may either be loaded from an SPI EEPROM or alternatively -loaded directly by the VideoCore firmware. A PCI reset will reset -the VL805 XHCI controller on the Raspberry Pi4 requiring the firmware -to be reloaded if an SPI EEPROM is not present. - -Use a VideoCore mailbox to trigger the loading of the VL805 -firmware (if necessary) after a PCI reset. - -Signed-off-by: Tim Gover <tim.gover@raspberrypi.org> ---- - drivers/usb/host/pci-quirks.c | 31 +++++++++++++++++++++- - include/soc/bcm2835/raspberrypi-firmware.h | 2 +- - 2 files changed, 31 insertions(+), 2 deletions(-) - -diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c -index 6c7f0a876b96..c3367b053044 100644 ---- a/drivers/usb/host/pci-quirks.c -+++ b/drivers/usb/host/pci-quirks.c -@@ -18,7 +18,7 @@ - #include <linux/dmi.h> - #include "pci-quirks.h" - #include "xhci-ext-caps.h" -- -+#include <soc/bcm2835/raspberrypi-firmware.h> - - #define UHCI_USBLEGSUP 0xc0 /* legacy support */ - #define UHCI_USBCMD 0 /* command register */ -@@ -630,6 +630,32 @@ bool usb_amd_pt_check_port(struct device *device, int port) - } - EXPORT_SYMBOL_GPL(usb_amd_pt_check_port); - -+/* The VL805 firmware may either be loaded from an EEPROM or by the BIOS into -+ * memory. If run from memory it must be reloaded after a PCI fundmental reset. -+ * The Raspberry Pi firmware acts as the BIOS in this case. -+ */ -+static void usb_vl805_init(struct pci_dev *pdev) -+{ -+#if IS_ENABLED(CONFIG_RASPBERRYPI_FIRMWARE) -+ struct rpi_firmware *fw; -+ struct { -+ u32 dev_addr; -+ } packet; -+ int ret; -+ -+ fw = rpi_firmware_get(NULL); -+ if (!fw) -+ return; -+ -+ packet.dev_addr = (pdev->bus->number << 20) | -+ (PCI_SLOT(pdev->devfn) << 15) | (PCI_FUNC(pdev->devfn) << 12); -+ -+ dev_dbg(&pdev->dev, "RPI_FIRMWARE_NOTIFY_XHCI_RESET %x", packet.dev_addr); -+ ret = rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_XHCI_RESET, -+ &packet, sizeof(packet)); -+#endif -+} -+ - /* - * Make sure the controller is completely inactive, unable to - * generate interrupts or do DMA. -@@ -1207,6 +1233,9 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) - if (pdev->vendor == PCI_VENDOR_ID_INTEL) - usb_enable_intel_xhci_ports(pdev); - -+ if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) -+ usb_vl805_init(pdev); -+ - op_reg_base = base + XHCI_HC_LENGTH(readl(base)); - - /* Wait for the host controller to be ready before writing any -diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h -index 7800e12ee042..cc9cdbc66403 100644 ---- a/include/soc/bcm2835/raspberrypi-firmware.h -+++ b/include/soc/bcm2835/raspberrypi-firmware.h -@@ -90,7 +90,7 @@ enum rpi_firmware_property_tag { - RPI_FIRMWARE_SET_PERIPH_REG = 0x00038045, - RPI_FIRMWARE_GET_POE_HAT_VAL = 0x00030049, - RPI_FIRMWARE_SET_POE_HAT_VAL = 0x00030050, -- -+ RPI_FIRMWARE_NOTIFY_XHCI_RESET = 0x00030058, - - /* Dispmanx TAGS */ - RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE = 0x00040001, --- -2.24.1 - |