2024-03-07 09:55:37

by Théo Lebrun

[permalink] [raw]
Subject: [PATCH v4 7/9] usb: cdns3-ti: add J7200 support with reset-on-resume behavior

Add ti,j7200-usb compatible. Match data indicates the controller resets
on resume meaning:
- The cdns3-ti wrapper init sequence must be ran at resume.
- Tell the cdns3 core that we reset on resume. This silences a xHCI
warning visible in cases of unexpected resets.

Signed-off-by: Théo Lebrun <[email protected]>
---
drivers/usb/cdns3/cdns3-ti.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/drivers/usb/cdns3/cdns3-ti.c b/drivers/usb/cdns3/cdns3-ti.c
index 29fb24c811b3..648243a27987 100644
--- a/drivers/usb/cdns3/cdns3-ti.c
+++ b/drivers/usb/cdns3/cdns3-ti.c
@@ -17,6 +17,8 @@
#include <linux/pm_runtime.h>
#include <linux/property.h>

+#include "core.h"
+
/* USB Wrapper register offsets */
#define USBSS_PID 0x0
#define USBSS_W1 0x4
@@ -255,7 +257,25 @@ static const struct dev_pm_ops cdns_ti_pm_ops = {
SYSTEM_SLEEP_PM_OPS(cdns_ti_suspend, cdns_ti_resume)
};

+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 cdns_ti_match_data cdns_ti_j7200_match_data = {
+ .reset_on_resume = true,
+ .auxdata = cdns_ti_j7200_auxdata,
+};
+
static const struct of_device_id cdns_ti_of_match[] = {
+ { .compatible = "ti,j7200-usb", .data = &cdns_ti_j7200_match_data, },
{ .compatible = "ti,j721e-usb", },
{ .compatible = "ti,am64-usb", },
{},

--
2.44.0