From b50a2da03bd95784541b3f9058e452cc38f9ba05 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 16 May 2024 10:15:37 +0530 Subject: usb: cdns3-ti: Add workaround for Errata i2409 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 Signed-off-by: Ravi Gunasekaran Acked-by: Peter Chen Link: https://lore.kernel.org/r/20240516044537.16801-3-r-gunasekaran@ti.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/cdns3/cdns3-ti.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers/usb/cdns3/cdns3-ti.c') 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 #include #include +#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; -- cgit v1.2.3-70-g09d2