linux-kernel - [PATCH v5 07/12] usb: cdns3-ti: add J7200 support with reset-on-resume behavior

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Message-Id: <20240726-s2r-cdns-v5-7-8664bfb032ac@bootlin.com>
Date: Fri, 26 Jul 2024 20:17:55 +0200
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Roger Quadros <rogerq@...nel.org>, 
 Peter Chen <peter.chen@...nel.org>, Pawel Laszczak <pawell@...ence.com>, 
 Mathias Nyman <mathias.nyman@...el.com>, Nishanth Menon <nm@...com>, 
 Vignesh Raghavendra <vigneshr@...com>, Tero Kristo <kristo@...nel.org>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 Kevin Hilman <khilman@...nel.org>, 
 Grégory Clement <gregory.clement@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH v5 07/12] usb: cdns3-ti: add J7200 support with
 reset-on-resume behavior

Add ti,j7200-usb compatible. Match data indicates the controller resets
on resume which tells that to the cdns3 core. This in turn silences a
xHCI warning visible in cases of unexpected resets.

We also inherit the errata quirk CDNS3_DRD_SUSPEND_RESIDENCY_ENABLE from
the default `cdns_ti_auxdata` configuration.

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
 drivers/usb/cdns3/cdns3-ti.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/usb/cdns3/cdns3-ti.c b/drivers/usb/cdns3/cdns3-ti.c
index 159814dfc856..65b8b6f4c654 100644
--- a/drivers/usb/cdns3/cdns3-ti.c
+++ b/drivers/usb/cdns3/cdns3-ti.c
@@ -258,7 +258,21 @@ static const struct of_dev_auxdata cdns_ti_auxdata[] = {
 	{},
 };
 
+static struct cdns3_platform_data cdns_ti_j7200_pdata = {
+	.quirks = CDNS3_RESET_ON_RESUME |
+		  CDNS3_DRD_SUSPEND_RESIDENCY_ENABLE,   /* Errata i2409 */
+};
+
+static const struct of_dev_auxdata cdns_ti_j7200_auxdata[] = {
+	{
+		.compatible = "cdns,usb3",
+		.platform_data = &cdns_ti_j7200_pdata,
+	},
+	{},
+};
+
 static const struct of_device_id cdns_ti_of_match[] = {
+	{ .compatible = "ti,j7200-usb", .data = cdns_ti_j7200_auxdata },
 	{ .compatible = "ti,j721e-usb", .data = cdns_ti_auxdata },
 	{ .compatible = "ti,am64-usb", .data = cdns_ti_auxdata },
 	{},

-- 
2.45.2