This is a note to let you know that I've just added the patch titled
usb: cdns3-ti: Add workaround for Errata i2409
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-cdns3-ti-add-workaround-for-errata-i2409.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a96162733b435b84e52cca4849a6a449b1ee1748
Author: Roger Quadros <rogerq@xxxxxxxxxx>
Date: Sun Jul 28 12:06:40 2024 -0400
usb: cdns3-ti: Add workaround for Errata i2409
[ Upstream commit b50a2da03bd95784541b3f9058e452cc38f9ba05 ]
TI USB2 PHY is known to have a lockup issue on very short
suspend intervals. Enable the Suspend Residency quirk flag to
workaround this as described in Errata i2409 [1].
[1] - https://www.ti.com/lit/er/sprz457h/sprz457h.pdf
Signed-off-by: Roger Quadros <rogerq@xxxxxxxxxx>
Signed-off-by: Ravi Gunasekaran <r-gunasekaran@xxxxxx>
Acked-by: Peter Chen <peter.chen@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240516044537.16801-3-r-gunasekaran@xxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/cdns3/cdns3-ti.c b/drivers/usb/cdns3/cdns3-ti.c
index 5945c4b1e11f..cfabc12ee0e3 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
@@ -85,6 +86,18 @@ static inline void cdns_ti_writel(struct cdns_ti *data, u32 offset, u32 value)
writel(value, data->usbss + offset);
}
+static struct cdns3_platform_data cdns_ti_pdata = {
+ .quirks = CDNS3_DRD_SUSPEND_RESIDENCY_ENABLE, /* Errata i2409 */
+};
+
+static const struct of_dev_auxdata cdns_ti_auxdata[] = {
+ {
+ .compatible = "cdns,usb3",
+ .platform_data = &cdns_ti_pdata,
+ },
+ {},
+};
+
static int cdns_ti_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -176,7 +189,7 @@ static int cdns_ti_probe(struct platform_device *pdev)
reg |= USBSS_W1_PWRUP_RST;
cdns_ti_writel(data, USBSS_W1, reg);
- error = of_platform_populate(node, NULL, NULL, dev);
+ error = of_platform_populate(node, NULL, cdns_ti_auxdata, dev);
if (error) {
dev_err(dev, "failed to create children: %d\n", error);
goto err;
