[PATCH 5/6] usb: cdns3-ti: notify cdns core that hardware resets across suspend on J7200

[Théo Lebrun]

Use the CDNS3_RESET_ON_RESUME quirk flag to inform the cdns3 core that
our J7200 USB controller will lose power during suspend. It therefore
must be reconfigured when we resume.

Signed-off-by: Théo Lebrun <theo.lebrun at bootlin.com>
---
 drivers/usb/cdns3/cdns3-ti.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/cdns3/cdns3-ti.c b/drivers/usb/cdns3/cdns3-ti.c
index 50b38c4b9c87..c65714c783fb 100644
--- a/drivers/usb/cdns3/cdns3-ti.c
+++ b/drivers/usb/cdns3/cdns3-ti.c
@@ -16,6 +16,7 @@
 #include <linux/of_platform.h>
 #include <linux/pm_runtime.h>
 #include <linux/property.h>
+#include "core.h"
 
 /* USB Wrapper register offsets */
 #define USBSS_PID		0x0
@@ -127,6 +128,7 @@ static int cdns_ti_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *node = pdev->dev.of_node;
+	const struct of_dev_auxdata *auxdata;
 	struct cdns_ti *data;
 	unsigned long rate;
 	int error, i;
@@ -182,7 +184,8 @@ static int cdns_ti_probe(struct platform_device *pdev)
 
 	cdns_ti_init_hw(data);
 
-	error = of_platform_populate(node, NULL, NULL, dev);
+	auxdata = of_device_get_match_data(dev);
+	error = of_platform_populate(node, NULL, auxdata, dev);
 	if (error) {
 		dev_err(dev, "failed to create children: %d\n", error);
 		goto err;
@@ -261,8 +264,20 @@ static void cdns_ti_remove(struct platform_device *pdev)
 	platform_set_drvdata(pdev, NULL);
 }
 
+static struct cdns3_platform_data cdns_ti_j7200_pdata = {
+	.quirks = CDNS3_RESET_ON_RESUME,
+};
+
+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", },
+	{ .compatible = "ti,j7200-usb", .data = cdns_ti_j7200_auxdata, },
 	{ .compatible = "ti,j721e-usb", },
 	{ .compatible = "ti,am64-usb", },
 	{},

-- 
2.41.0