linux-kernel - [PATCH 2/2] usb: misc: onboard_usb_hub: Add support for TI TUSB8020B

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Message-ID: <20240227090228.22156-2-macpaul.lin@mediatek.com>
Date: Tue, 27 Feb 2024 17:02:28 +0800
From: Macpaul Lin <macpaul.lin@...iatek.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Rob Herring
	<robh+dt@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
	Matthias Kaehlcke <mka@...omium.org>, Matthias Brugger
	<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, <linux-usb@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>
CC: Bear Wang <bear.wang@...iatek.com>, Pablo Sun <pablo.sun@...iatek.com>,
	Macpaul Lin <macpaul.lin@...iatek.com>, Macpaul Lin <macpaul@...il.com>,
	Chunfeng Yun <chunfeng.yun@...iatek.com>, Yow-shin Liou
	<yow-shin.liou@...iatek.com>, MediaTek Chromebook Upstream
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, Chen-Yu Tsai
	<wenst@...omium.org>
Subject: [PATCH 2/2] usb: misc: onboard_usb_hub: Add support for TI TUSB8020B

The TI TUSB8020B is a 2-port USB 3.0 hub. Add support for
this hub in the driver in order to bring up reset, and supply
dependencies.

Power-up: Issue a GPIO reset (GRSTz) 3ms after VDD and VDD33 stabilize.

Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
---
 drivers/usb/misc/onboard_usb_hub.c | 2 ++
 drivers/usb/misc/onboard_usb_hub.h | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c
index 1e169c97f45e..e19c11a64923 100644
--- a/drivers/usb/misc/onboard_usb_hub.c
+++ b/drivers/usb/misc/onboard_usb_hub.c
@@ -457,6 +457,8 @@ static const struct usb_device_id onboard_hub_id_table[] = {
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x5411) }, /* RTS5411 USB 2.1 */
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x0414) }, /* RTS5414 USB 3.2 */
 	{ USB_DEVICE(VENDOR_ID_REALTEK, 0x5414) }, /* RTS5414 USB 2.1 */
+	{ USB_DEVICE(VENDOR_ID_TI, 0x8025) }, /* TI USB8020B 3.0 */
+	{ USB_DEVICE(VENDOR_ID_TI, 0x8027) }, /* TI USB8020B 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_VIA, 0x0817) }, /* VIA VL817 3.1 */
diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h
index 373192afd022..874473e60132 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 realtek_rts5411_data = {
 	.num_supplies = 1,
 };
 
+static const struct onboard_hub_pdata ti_tusb8020b_data = {
+	.reset_us = 3000,
+	.num_supplies = 1,
+};
+
 static const struct onboard_hub_pdata ti_tusb8041_data = {
 	.reset_us = 3000,
 	.num_supplies = 1,
@@ -70,6 +75,8 @@ static const struct of_device_id onboard_hub_match[] = {
 	{ .compatible = "usb424,2744", .data = &microchip_usb5744_data, },
 	{ .compatible = "usb424,5733", .data = &microchip_usb5734_data, },
 	{ .compatible = "usb424,5744", .data = &microchip_usb5744_data, },
+	{ .compatible = "usb451,8025", .data = &ti_tusb8020b_data, },
+	{ .compatible = "usb451,8027", .data = &ti_tusb8020b_data, },
 	{ .compatible = "usb451,8140", .data = &ti_tusb8041_data, },
 	{ .compatible = "usb451,8142", .data = &ti_tusb8041_data, },
 	{ .compatible = "usb4b4,6504", .data = &cypress_hx3_data, },
-- 
2.18.0