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This series brings USB gadget support for i.MX8MM and allows the usage of the Serial Download Protocol, which is a convenient way for loading U-Boot via the 'uuu' tool and and flashing the eMMC via the U-Boot 'ums' command. Tested on board based on iMX8MM SOC: -------------------------------------------------------------------------------- U-Boot SPL 2022.04-00114-gd04ac0fd3a-dirty (May 20 2022 - 10:12:08 +0200) DEBUG Normal Boot WDT: Started watchdog@30280000 with servicing (60s timeout) Trying to boot from USB SDP SDP: initialize... SDP: handle requests... Downloading file of size 2366576 to 0x40400000... done Jumping to header at 0x40400000 Header Tag is not an IMX image Found header at 0x4041e1a0 NOTICE: BL31: v2.2(release):android-11.0.0_1.2.0-rc2-0-gcb435ee78 NOTICE: BL31: Built : 16:43:13, Feb 1 2022 welcome to lk/MP boot args 0x2000000 0xbe000000 0x2000 0x0 initializing trusty (Built: 12:13:25 Nov 19 2020) Initializing Trusted OS SMC handler avb: Initializing AVB App hwcrypto: Initializing caam_drv: 318: job failed (0x2000055b) trusty_gatekeeper: Initializing hwrng_caam: Init HWRNG service provider hwrng_srv: Start HWRNG service hwcrypto_caam: Init HWCRYPTO service provider hwcrypto_srv: Start HWCRYPTO service hwkey_caam: Init HWKEY service provider hwkey_caam: 183: Invalid magic, unpack key package fail. hwkey_srv: Start HWKEY service hwcrypto: enter main event loop U-Boot 2022.04-00114-gd04ac0fd3a-dirty (May 20 2022 - 10:12:08 +0200) CPU: Freescale i.MX8MMQ rev1.0 at 1200 MHz Reset cause: POR Model: FSL i.MX8MM EVK board DRAM: 2 GiB -------------------------------------------------------------------------------- References: - https://patchwork.ozlabs.org/project/uboot/list/?series=251796&state=* - https://www.mail-archive.com/u-boot@lists.denx.de/msg410536.html Tommaso Merciai (8): configs: imx8mm: imx8mm-evk: add usb defines necessary for ehci-hcd usb driver imx8mm: Fix USB reg addresses for i.MX8MM clock_imx8mm: Add enable_usboh3_clk() for i.MX8M usb: ehci-mx6: move mode set/detect to probe usb: ehci-mx6: Allow building SDP for imx8mm imx8mm_evk: Add an entry for USB boot imx8mm_evk: Add Serial Download Protocol support doc: imx8mm_evk: Add instructions for eMMC boot arch/arm/include/asm/arch-imx8m/clock.h | 1 + arch/arm/include/asm/arch-imx8m/imx-regs.h | 22 +++++++ arch/arm/mach-imx/imx8m/clock_imx8mm.c | 16 ++++++ board/freescale/imx8mm_evk/spl.c | 2 + configs/imx8mm_evk_defconfig | 21 +++++++ doc/board/nxp/imx8mm_evk.rst | 42 ++++++++++++-- drivers/usb/host/ehci-mx6.c | 67 ++++++++-------------- include/configs/imx8mm_evk.h | 6 ++ 8 files changed, 129 insertions(+), 48 deletions(-)