linux-kernel - [PATCH v2 2/4] usb: misc: onboard-hub: add support for Microchip USB2514B USB 2.0 hub

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Message-ID: <20220726080708.162547-3-fabrice.gasnier@foss.st.com>
Date:   Tue, 26 Jul 2022 10:07:06 +0200
From:   Fabrice Gasnier <fabrice.gasnier@...s.st.com>
To:     <gregkh@...uxfoundation.org>, <robh+dt@...nel.org>,
        <mka@...omium.org>, <alexandre.torgue@...s.st.com>
CC:     <krzysztof.kozlowski+dt@...aro.org>, <arnd@...db.de>,
        <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <amelie.delaunay@...s.st.com>, <fabrice.gasnier@...s.st.com>
Subject: [PATCH v2 2/4] usb: misc: onboard-hub: add support for Microchip USB2514B USB 2.0 hub

Add support for Microchip USB2514B USB 2.0 hub to the onboard usb hub
driver. Adopt the generic usb-device compatible ("usbVID,PID").
Some STM32MP1 boards have this hub on-board, with a supply that needs to
be enabled for proper operation.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
---
Changes in v2:
- Sort vendor ids in alphabetic order as commented by Matthias.
- Sort compatible list in alphanumeric order, e.g. by vendor ids as
  commented by Matthias (but keep PIDs grouped for a HUB chip).
- Update commit message to remove earlier reference on usbVID,PID.
---
 drivers/usb/misc/onboard_usb_hub.c | 2 ++
 drivers/usb/misc/onboard_usb_hub.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
index 6b9b949d17d30..de3627af3c84a 100644
--- a/drivers/usb/misc/onboard_usb_hub.c
+++ b/drivers/usb/misc/onboard_usb_hub.c
@@ -309,6 +309,7 @@ static struct platform_driver onboard_hub_driver = {
 
 /************************** USB driver **************************/
 
+#define VENDOR_ID_MICROCHIP	0x0424
 #define VENDOR_ID_REALTEK	0x0bda
 
 /*
@@ -383,6 +384,7 @@ static void onboard_hub_usbdev_disconnect(struct usb_device *udev)
 }
 
 static const struct usb_device_id onboard_hub_id_table[] = {
+	{ USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2514) }, /* USB2514B USB 2.0 */
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x0411) }, /* RTS5411 USB 3.1 */
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x5411) }, /* RTS5411 USB 2.1 */
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x0414) }, /* RTS5414 USB 3.2 */
diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h
index d3a5b6938582e..3820669eb98ce 100644
--- a/drivers/usb/misc/onboard_usb_hub.h
+++ b/drivers/usb/misc/onboard_usb_hub.h
@@ -7,6 +7,7 @@
 #define _USB_MISC_ONBOARD_USB_HUB_H
 
 static const struct of_device_id onboard_hub_match[] = {
+	{ .compatible = "usb424,2514" },
 	{ .compatible = "usbbda,411" },
 	{ .compatible = "usbbda,5411" },
 	{ .compatible = "usbbda,414" },
-- 
2.25.1