[PATCH 3/4] usb: misc: onboard-hub: add support for Cypress HX3 USB 3.0 family

From: Benjamin Bara <bbara93@gmail.com>
To: Matthias Kaehlcke <mka@chromium.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Benjamin Bara <benjamin.bara@skidata.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org
Subject: [PATCH 3/4] usb: misc: onboard-hub: add support for Cypress HX3 USB 3.0 family
Date: Wed, 21 Jun 2023 12:38:02 +0200	[thread overview]
Message-ID: <20230620-hx3-v1-3-3a649b34c85b@skidata.com> (raw)
In-Reply-To: <20230620-hx3-v1-0-3a649b34c85b@skidata.com>

From: Benjamin Bara <benjamin.bara@skidata.com>

The HX3 comes in different variants (up to 4 USB 3.0 ports; multi-TT),
e.g. CYUSB330x/CYUSB331x/CYUSB332x/CYUSB230x. It operates with two
different power supplies: 1V2 and 3V3.

Add the support for this hub, for controlling the reset pin and the
power supplies.

Reset time is extracted from data sheet, page 24:
"The RESETN pin can be tied to VDD_IO through an external resistor and
to ground (GND) through an external capacitor (minimum 5 ms time
constant)."
V_IH min is given at 0.7 * 3V3 (page 34), therefore use 10ms.

Also add USB PIDs for the USB 2.0 and USB 3.0 root hub.

Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
---
 drivers/usb/misc/onboard_usb_hub.c | 3 +++
 drivers/usb/misc/onboard_usb_hub.h | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
index 79ba9d8a8fef..1275736637ed 100644
--- a/drivers/usb/misc/onboard_usb_hub.c
+++ b/drivers/usb/misc/onboard_usb_hub.c
@@ -351,6 +351,7 @@ static struct platform_driver onboard_hub_driver = {
 
 #define VENDOR_ID_MICROCHIP	0x0424
 #define VENDOR_ID_TI		0x0451
+#define VENDOR_ID_CYPRESS	0x04b4
 #define VENDOR_ID_GENESYS	0x05e3
 #define VENDOR_ID_REALTEK	0x0bda
 #define VENDOR_ID_VIA		0x2109
@@ -431,6 +432,8 @@ static const struct usb_device_id onboard_hub_id_table[] = {
 	{ USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2517) }, /* USB2517 USB 2.0 */
 	{ USB_DEVICE(VENDOR_ID_TI, 0x8140) }, /* TI USB8041 3.0 */
 	{ USB_DEVICE(VENDOR_ID_TI, 0x8142) }, /* TI USB8041 2.0 */
+	{ USB_DEVICE(VENDOR_ID_CYPRESS, 0x6504) }, /* CYUSB33{0,1,2}x/CYUSB230x 3.0 */
+	{ USB_DEVICE(VENDOR_ID_CYPRESS, 0x6506) }, /* CYUSB33{0,1,2}x/CYUSB230x 2.0 */
 	{ USB_DEVICE(VENDOR_ID_GENESYS, 0x0608) }, /* Genesys Logic GL850G USB 2.0 */
 	{ USB_DEVICE(VENDOR_ID_GENESYS, 0x0610) }, /* Genesys Logic GL852G USB 2.0 */
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x0411) }, /* RTS5411 USB 3.1 */
diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h
index 955aaaf1c31c..551221f02cff 100644
--- a/drivers/usb/misc/onboard_usb_hub.h
+++ b/drivers/usb/misc/onboard_usb_hub.h
@@ -19,6 +19,11 @@ static const struct onboard_hub_pdata ti_tusb8041_data = {
 	.reset_us = 3000,
 };
 
+static const struct onboard_hub_pdata cypress_hx3_data = {
+	.reset_us = 10000,
+	.supplies_num = 2,
+};
+
 static const struct onboard_hub_pdata genesys_gl850g_data = {
 	.reset_us = 3,
 };
@@ -40,6 +45,8 @@ static const struct of_device_id onboard_hub_match[] = {
 	{ .compatible = "usb424,2517", .data = &microchip_usb424_data, },
 	{ .compatible = "usb451,8140", .data = &ti_tusb8041_data, },
 	{ .compatible = "usb451,8142", .data = &ti_tusb8041_data, },
+	{ .compatible = "usb4b4,6504", .data = &cypress_hx3_data, },
+	{ .compatible = "usb4b4,6506", .data = &cypress_hx3_data, },
 	{ .compatible = "usb5e3,608", .data = &genesys_gl850g_data, },
 	{ .compatible = "usb5e3,610", .data = &genesys_gl852g_data, },
 	{ .compatible = "usbbda,411", .data = &realtek_rts5411_data, },

-- 
2.34.1

