usb: misc: onboard-hub: add support for Cypress HX3 USB 3.0 family

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.

Acked-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
Link: https://lore.kernel.org/r/20230620-hx3-v7-2-f79b4b22a1bf@skidata.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
index 135e187..3da1a46 100644 (file)
--- a/drivers/usb/misc/onboard_usb_hub.c
+++ b/drivers/usb/misc/onboard_usb_hub.c
@@ -350,6 +350,7 @@ static struct platform_driver onboard_hub_driver = {
 
 /************************** USB driver **************************/
 
+#define VENDOR_ID_CYPRESS      0x04b4
 #define VENDOR_ID_GENESYS      0x05e3
 #define VENDOR_ID_MICROCHIP    0x0424
 #define VENDOR_ID_REALTEK      0x0bda
@@ -428,6 +429,8 @@ static void onboard_hub_usbdev_disconnect(struct usb_device *udev)
 }
 
 static const struct usb_device_id onboard_hub_id_table[] = {
+       { 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_GENESYS, 0x0620) }, /* Genesys Logic GL3523 USB 3.1 */

diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h
index 76edde3..4026ba6 100644 (file)
--- a/drivers/usb/misc/onboard_usb_hub.h
+++ b/drivers/usb/misc/onboard_usb_hub.h
@@ -26,6 +26,11 @@ static const struct onboard_hub_pdata ti_tusb8041_data = {
        .num_supplies = 1,
 };
 
+static const struct onboard_hub_pdata cypress_hx3_data = {
+       .reset_us = 10000,
+       .num_supplies = 2,
+};
+
 static const struct onboard_hub_pdata genesys_gl850g_data = {
        .reset_us = 3,
        .num_supplies = 1,
@@ -46,6 +51,8 @@ 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 = "usb5e3,620", .data = &genesys_gl852g_data, },