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