tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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usb: misc: onboard_dev: Add WCH CH334 USB2.0 Hub (1a86:8091)

The WCH CH334/CH335[0] are USB2.0 protocol compliant 4-port USB HUB
controller chips, supporting USB2.0 high-speed and full-speed for
upstream ports, and USB2.0 high-speed 480Mbps, full-speed 12Mbps and
low-speed 1.5Mbps for downstream ports, supporting not only low-cost STT
mode (single TT schedules 4 downstream ports in time share), but also
supports high performance MTT mode (4 TTs each corresponding to 1 port,
concurrent processing).

[0]: https://www.wch-ic.com/downloads/CH334DS1_PDF.html

Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Link: https://patch.msgid.link/20260113095827.115-3-kernel@airkyi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

authored by

Chaoyi Chen and committed by
Greg Kroah-Hartman fa3bb501 00fcc9c8

+8
+8
drivers/usb/misc/onboard_usb_dev.h
··· 115 115 .is_hub = true, 116 116 }; 117 117 118 + static const struct onboard_dev_pdata wch_ch334_data = { 119 + .reset_us = 14000, 120 + .num_supplies = 2, 121 + .supply_names = { "vdd33", "v5" }, 122 + .is_hub = true, 123 + }; 124 + 118 125 static const struct onboard_dev_pdata xmos_xvf3500_data = { 119 126 .reset_us = 1, 120 127 .num_supplies = 2, ··· 153 146 { .compatible = "usbbda,5411", .data = &realtek_rts5411_data, }, 154 147 { .compatible = "usbbda,414", .data = &realtek_rts5411_data, }, 155 148 { .compatible = "usbbda,5414", .data = &realtek_rts5411_data, }, 149 + { .compatible = "usb1a86,8091", .data = &wch_ch334_data, }, 156 150 { .compatible = "usb1da0,5511", .data = &parade_ps5511_data, }, 157 151 { .compatible = "usb1da0,55a1", .data = &parade_ps5511_data, }, 158 152 { .compatible = "usb2109,817", .data = &vialab_vl817_data, },