From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Ricardo Pardini Date: Tue, 31 Jan 2023 00:11:35 +0100 Subject: odroidhc4: u-boot: spi: add pci enum & usb start to preboot Under investigation; Neil Armstrong has determined that forcing PCI enumeration on the HC4 allows the USB to be used for booting. This adds a preboot command to the u-boot config run PCI enumeration and start USB. (Starting USB is not required, since distroboot would start it anyway, but has the added benefit of (maybe?) allowing USB keyboard interaction during u-boot, which might be useful for users sans-UART) I have a strong suspicion that the real underlying issue is somehow related to GPIOH_4: - on the C4 DT, a gpio-hog usb-hub-reset `GPIOH_4 GPIO_ACTIVE_HIGH` - on the HC4 DT: pcie reset-gpios `GPIOH_4 GPIO_ACTIVE_LOW` See also: https://lore.kernel.org/all/20230121175639.12818-1-linux.amoon@gmail.com/ specially the c4 patch https://lore.kernel.org/all/20230121175639.12818-8-linux.amoon@gmail.com/ --- configs/odroid-hc4_defconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/configs/odroid-hc4_defconfig b/configs/odroid-hc4_defconfig index 1af9c11395..a006ef924e 100644 --- a/configs/odroid-hc4_defconfig +++ b/configs/odroid-hc4_defconfig @@ -17,6 +17,8 @@ CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20000000 CONFIG_REMAKE_ELF=y CONFIG_OF_BOARD_SETUP=y +CONFIG_USE_PREBOOT=y +CONFIG_PREBOOT="run boot_pci_enum; usb start" # CONFIG_DISPLAY_CPUINFO is not set CONFIG_MISC_INIT_R=y CONFIG_SYS_MAXARGS=32 -- Armbian