linux-kernel - [PATCH 2/2] usb: misc: onboard_usb_hub: Add support for Cypress CY7C6563x

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Message-ID: <20231123134728.709533-2-frieder@fris.de>
Date:   Thu, 23 Nov 2023 14:47:21 +0100
From:   Frieder Schrempf <frieder@...s.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        Matthias Kaehlcke <mka@...omium.org>
Cc:     Frieder Schrempf <frieder.schrempf@...tron.de>,
        Anand Moon <linux.amoon@...il.com>,
        Benjamin Bara <benjamin.bara@...data.com>,
        Icenowy Zheng <uwu@...nowy.me>,
        Javier Carrasco <javier.carrasco@...fvision.net>,
        Rob Herring <robh@...nel.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Subject: [PATCH 2/2] usb: misc: onboard_usb_hub: Add support for Cypress CY7C6563x

From: Frieder Schrempf <frieder.schrempf@...tron.de>

The Cypress CY7C6563x is a 2/4-port USB 2.0 hub. Add support for
this hub in the driver in order to bring up reset, supply or clock
dependencies.

There is no reset pulse width given in the datasheet so we expect
a minimal value of 1us to be enough. This hasn't been tested though
due to lack of hardware which has the reset connected to a GPIO.

Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
 drivers/usb/misc/onboard_usb_hub.c | 1 +
 drivers/usb/misc/onboard_usb_hub.h | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
index e710e3c82ba9b..e2e011036d359 100644
--- a/drivers/usb/misc/onboard_usb_hub.c
+++ b/drivers/usb/misc/onboard_usb_hub.c
@@ -440,6 +440,7 @@ 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_CYPRESS, 0x6570) }, /* CY7C6563x 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 c4e24a7b92904..67b2cc1e15e67 100644
--- a/drivers/usb/misc/onboard_usb_hub.h
+++ b/drivers/usb/misc/onboard_usb_hub.h
@@ -31,6 +31,11 @@ static const struct onboard_hub_pdata cypress_hx3_data = {
 	.num_supplies = 2,
 };
 
+static const struct onboard_hub_pdata cypress_hx2vl_data = {
+	.reset_us = 1,
+	.num_supplies = 1,
+};
+
 static const struct onboard_hub_pdata genesys_gl850g_data = {
 	.reset_us = 3,
 	.num_supplies = 1,
@@ -54,6 +59,7 @@ static const struct of_device_id onboard_hub_match[] = {
 	{ .compatible = "usb451,8142", .data = &ti_tusb8041_data, },
 	{ .compatible = "usb4b4,6504", .data = &cypress_hx3_data, },
 	{ .compatible = "usb4b4,6506", .data = &cypress_hx3_data, },
+	{ .compatible = "usb4b4,6570", .data = &cypress_hx2vl_data, },
 	{ .compatible = "usb5e3,608", .data = &genesys_gl850g_data, },
 	{ .compatible = "usb5e3,610", .data = &genesys_gl852g_data, },
 	{ .compatible = "usb5e3,620", .data = &genesys_gl852g_data, },
-- 
2.42.1