From patchwork Mon Jun 29 16:37:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 243085 List-Id: U-Boot discussion From: nsaenzjulienne at suse.de (Nicolas Saenz Julienne) Date: Mon, 29 Jun 2020 18:37:21 +0200 Subject: [PATCH v6 0/4] usb: xhci: Load Raspberry Pi 4 VL805's firmware Message-ID: <20200629163725.13330-1-nsaenzjulienne@suse.de> Newer revisions of the RPi4 need their xHCI chip, VL805, firmware to be loaded explicitly. Earlier versions didn't need that as they where using an EEPROM for that purpose. This series takes care of setting up the relevant infrastructure and run the firmware loading routine at the right moment. Note that this builds on top of Sylwester Nawrocki's "USB host support for Raspberry Pi 4 board" series. This also depends on a DT/bindings patch available on the linux-mailing lists: https://www.mail-archive.com/linux-kernel at vger.kernel.org/msg2205783.html Here is the relevant bit for reference/discussion: &pcie0 { pci at 1,0 { #address-cells = <3>; #size-cells = <2>; ranges; reg = <0 0 0 0 0>; usb at 1,0 { reg = <0x10000 0 0 0 0>; resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>; }; }; }; --- Changes since v5: - Properly handle !CONFIG_IS_ENABLED(DM_RESET) in xchi code Changes since v4: - Correct DT PCI topology, I separated the root bridge and controller DT nodes - Get rid of PCI core patch as not needed with correct DT PCI topology - Move reset support to xchi core Changes since v3: - Use reset controller Changes since v2: - Correct comment on patch #1 - Address Matthias' comments Changes since v1: - Rename function - Use callback in xhci-pci.c Nicolas Saenz Julienne (4): arm: rpi: Add function to trigger VL805's firmware load reset: Add Raspberry Pi 4 firmware reset controller configs: Enable support for reset controllers on RPi4 usb: xhci: Add reset controller support arch/arm/mach-bcm283x/include/mach/mbox.h | 13 ++++ arch/arm/mach-bcm283x/include/mach/msg.h | 7 +++ arch/arm/mach-bcm283x/msg.c | 46 ++++++++++++++ configs/rpi_4_32b_defconfig | 1 + configs/rpi_4_defconfig | 1 + configs/rpi_arm64_defconfig | 1 + drivers/reset/Kconfig | 10 ++++ drivers/reset/Makefile | 1 + drivers/reset/reset-raspberrypi.c | 60 +++++++++++++++++++ drivers/usb/host/xhci-mem.c | 2 + drivers/usb/host/xhci.c | 33 ++++++++++ .../reset/raspberrypi,firmware-reset.h | 13 ++++ include/usb/xhci.h | 2 + 13 files changed, 190 insertions(+) create mode 100644 drivers/reset/reset-raspberrypi.c create mode 100644 include/dt-bindings/reset/raspberrypi,firmware-reset.h