mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 18:28:55 +00:00
ba1fa2abde
The main issue the driver addresses is that a USB hub needs to be
powered before it can be discovered. This is often solved by using
"regulator-always-on".
This driver is inspired by the Linux v6.1 driver. It only enables (or
disables) the hub vdd (3v3) supply, so it can be enumerated.
Scanning of the device tree is done in a similar manner to the sandbox,
by the usb-uclass. DT part looks like:
&usbh_ehci {
...
#address-cells = <1>;
#size-cells = <0>;
hub@1 {
compatible = "usb424,2514";
reg = <1>;
vdd-supply = <&v3v3>;
};
};
When the bus gets probed, the driver is automatically probed/removed from
the bus tree, as an example on stm32:
STM32MP> usb start
starting USB...
STM32MP> dm tree
Class Index Probed Driver Name
-----------------------------------------------------------
usb 0 [ + ] ehci_generic | |-- usb@5800d000
usb_hub 0 [ + ] usb_onboard_hub | | `-- hub@1
usb_hub 1 [ + ] usb_hub | | `-- usb_hub
STM32MP> usb tree
USB device tree:
1 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
+-2 Hub (480 Mb/s, 2mA)
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
112 lines
3.1 KiB
Makefile
112 lines
3.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) Copyright 2004-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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# core
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ifndef CONFIG_SPL_BUILD
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obj-y += init/
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obj-y += main.o
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obj-y += exports.o
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obj-$(CONFIG_HUSH_PARSER) += cli_hush.o
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obj-$(CONFIG_AUTOBOOT) += autoboot.o
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# # boards
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obj-y += board_f.o
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obj-y += board_r.o
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obj-$(CONFIG_DISPLAY_BOARDINFO) += board_info.o
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obj-$(CONFIG_DISPLAY_BOARDINFO_LATE) += board_info.o
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obj-$(CONFIG_FDT_SIMPLEFB) += fdt_simplefb.o
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obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += fdt_support.o
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obj-$(CONFIG_MII) += miiphyutil.o
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obj-$(CONFIG_CMD_MII) += miiphyutil.o
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obj-$(CONFIG_PHYLIB) += miiphyutil.o
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obj-$(CONFIG_USB_HOST) += usb.o usb_hub.o
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obj-$(CONFIG_USB_GADGET) += usb.o usb_hub.o
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obj-$(CONFIG_USB_STORAGE) += usb_storage.o
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obj-$(CONFIG_USB_ONBOARD_HUB) += usb_onboard_hub.o
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# others
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obj-$(CONFIG_CONSOLE_MUX) += iomux.o
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obj-$(CONFIG_MTD_NOR_FLASH) += flash.o
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obj-$(CONFIG_CMD_KGDB) += kgdb.o kgdb_stubs.o
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obj-$(CONFIG_I2C_EDID) += edid.o
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obj-$(CONFIG_KALLSYMS) += kallsyms.o
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obj-y += splash.o
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obj-$(CONFIG_SPLASH_SOURCE) += splash_source.o
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obj-$(CONFIG_MENU) += menu.o
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obj-$(CONFIG_UPDATE_COMMON) += update.o
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obj-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
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obj-$(CONFIG_CMDLINE) += cli_readline.o cli_simple.o
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endif # !CONFIG_SPL_BUILD
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obj-$(CONFIG_$(SPL_TPL_)BOOTSTAGE) += bootstage.o
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obj-$(CONFIG_$(SPL_TPL_)BLOBLIST) += bloblist.o
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ifdef CONFIG_SPL_BUILD
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ifdef CONFIG_SPL_DFU
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obj-$(CONFIG_DFU_OVER_USB) += dfu.o
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endif
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obj-$(CONFIG_SPL_NET) += miiphyutil.o
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obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += fdt_support.o
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obj-$(CONFIG_SPL_USB_HOST) += usb.o usb_hub.o
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obj-$(CONFIG_SPL_USB_STORAGE) += usb_storage.o
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obj-$(CONFIG_SPL_MUSB_NEW) += usb.o
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endif # CONFIG_SPL_BUILD
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#others
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obj-$(CONFIG_DDR_SPD) += ddr_spd.o
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obj-$(CONFIG_SPD_EEPROM) += ddr_spd.o
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obj-$(CONFIG_HWCONFIG) += hwconfig.o
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obj-$(CONFIG_BOUNCE_BUFFER) += bouncebuf.o
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ifdef CONFIG_SPL_BUILD
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ifdef CONFIG_TPL_BUILD
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obj-$(CONFIG_TPL_SERIAL) += console.o
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else
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obj-$(CONFIG_SPL_SERIAL) += console.o
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endif
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else
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obj-y += console.o
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endif # CONFIG_SPL_BUILD
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obj-$(CONFIG_CROS_EC) += cros_ec.o
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obj-y += dlmalloc.o
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ifdef CONFIG_SYS_MALLOC_F
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ifneq ($(CONFIG_$(SPL_TPL_)SYS_MALLOC_F_LEN),0)
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obj-y += malloc_simple.o
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endif
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endif
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obj-$(CONFIG_CYCLIC) += cyclic.o
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obj-$(CONFIG_$(SPL_TPL_)EVENT) += event.o
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obj-$(CONFIG_$(SPL_TPL_)HASH) += hash.o
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obj-$(CONFIG_IO_TRACE) += iotrace.o
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obj-y += memsize.o
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obj-y += stdio.o
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ifdef CONFIG_CMD_EEPROM_LAYOUT
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obj-y += eeprom/eeprom_field.o eeprom/eeprom_layout.o
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endif
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obj-y += cli.o
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obj-$(CONFIG_FSL_DDR_INTERACTIVE) += cli_simple.o cli_readline.o
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obj-$(CONFIG_STM32MP1_DDR_INTERACTIVE) += cli_simple.o cli_readline.o
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obj-$(CONFIG_DFU_OVER_USB) += dfu.o
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obj-y += command.o
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obj-$(CONFIG_$(SPL_TPL_)LOG) += log.o
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obj-$(CONFIG_$(SPL_TPL_)LOG_CONSOLE) += log_console.o
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obj-$(CONFIG_$(SPL_TPL_)LOG_SYSLOG) += log_syslog.o
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obj-y += s_record.o
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obj-$(CONFIG_CMD_LOADB) += xyzModem.o
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obj-$(CONFIG_$(SPL_TPL_)YMODEM_SUPPORT) += xyzModem.o
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obj-$(CONFIG_$(SPL_TPL_)AVB_VERIFY) += avb_verify.o
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obj-$(CONFIG_$(SPL_TPL_)STACKPROTECTOR) += stackprot.o
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obj-$(CONFIG_SCP03) += scp03.o
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obj-$(CONFIG_QFW) += qfw.o
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