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From: Chaoyi Chen <kernel@airkyi.com>
To: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Catalin Popescu" <catalin.popescu@leica-geosystems.com>,
	"Stephen Boyd" <swboyd@chromium.org>,
	"Jens Glathe" <jens.glathe@oldschoolsolutions.biz>,
	"Dmitry Baryshkov" <dmitry.baryshkov@oss.qualcomm.com>,
	"Mike Looijmans" <mike.looijmans@topic.nl>,
	"Pin-yen Lin" <treapking@chromium.org>,
	"J. Neuschäfer" <j.ne@posteo.net>,
	"Quentin Schulz" <quentin.schulz@cherry.de>
Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Chaoyi Chen <chaoyi.chen@rock-chips.com>
Subject: [PATCH v2 2/2] usb: misc: onboard_dev: Add WCH CH334 USB2.0 Hub (1a86:8091)
Date: Tue, 13 Jan 2026 17:58:27 +0800	[thread overview]
Message-ID: <20260113095827.115-3-kernel@airkyi.com> (raw)
In-Reply-To: <20260113095827.115-1-kernel@airkyi.com>

From: Chaoyi Chen <chaoyi.chen@rock-chips.com>

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>
---
 drivers/usb/misc/onboard_usb_dev.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h
index c1462be5526d..1a1e86e60e04 100644
--- a/drivers/usb/misc/onboard_usb_dev.h
+++ b/drivers/usb/misc/onboard_usb_dev.h
@@ -115,6 +115,13 @@ static const struct onboard_dev_pdata vialab_vl817_data = {
 	.is_hub = true,
 };
 
+static const struct onboard_dev_pdata wch_ch334_data = {
+	.reset_us = 14000,
+	.num_supplies = 2,
+	.supply_names = { "vdd33", "v5" },
+	.is_hub = true,
+};
+
 static const struct onboard_dev_pdata xmos_xvf3500_data = {
 	.reset_us = 1,
 	.num_supplies = 2,
@@ -146,6 +153,7 @@ static const struct of_device_id onboard_dev_match[] = {
 	{ .compatible = "usbbda,5411", .data = &realtek_rts5411_data, },
 	{ .compatible = "usbbda,414", .data = &realtek_rts5411_data, },
 	{ .compatible = "usbbda,5414", .data = &realtek_rts5411_data, },
+	{ .compatible = "usb1a86,8091", .data = &wch_ch334_data, },
 	{ .compatible = "usb1da0,5511", .data = &parade_ps5511_data, },
 	{ .compatible = "usb1da0,55a1", .data = &parade_ps5511_data, },
 	{ .compatible = "usb2109,817", .data = &vialab_vl817_data, },
-- 
2.51.1


      parent reply	other threads:[~2026-01-13  9:59 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-13  9:58 [PATCH v2 0/2] usb: misc: onboard_dev: Add WCH CH334 USB2.0 Hub (1a86:8091) Chaoyi Chen
2026-01-13  9:58 ` [PATCH v2 1/2] dt-bindings: usb: Add binding for WCH CH334/CH335 hub controller Chaoyi Chen
2026-01-15 18:49   ` Rob Herring (Arm)
2026-01-13  9:58 ` Chaoyi Chen [this message]

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