[PATCH V2 2/2] phy: tegra: xusb: Disable periodic tracking on Tegra234

Wayne Chang waynec at nvidia.com
Mon May 19 02:09:29 PDT 2025


From: Haotien Hsu <haotienh at nvidia.com>

Periodic calibration updates (~10µs) may overlap with transfers when
PCIe NVMe SSD, LPDDR, and USB2 devices operate simultaneously, causing
crosstalk on Tegra234 devices. Hence disable periodic calibration updates
and make this a one-time calibration.

Fixes: d8163a32ca95 ("phy: tegra: xusb: Add Tegra234 support")
Cc: stable at vger.kernel.org
Signed-off-by: Haotien Hsu <haotienh at nvidia.com>
Signed-off-by: Wayne Chang <waynec at nvidia.com>
---
V1->V2: Rebased the commit
 drivers/phy/tegra/xusb-tegra186.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c
index 683692f0ec3c..ba668c77457f 100644
--- a/drivers/phy/tegra/xusb-tegra186.c
+++ b/drivers/phy/tegra/xusb-tegra186.c
@@ -1711,7 +1711,7 @@ const struct tegra_xusb_padctl_soc tegra234_xusb_padctl_soc = {
 	.num_supplies = ARRAY_SIZE(tegra194_xusb_padctl_supply_names),
 	.supports_gen2 = true,
 	.poll_trk_completed = true,
-	.trk_hw_mode = true,
+	.trk_hw_mode = false,
 	.trk_update_on_idle = true,
 	.supports_lp_cfg_en = true,
 };
-- 
2.25.1




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