From: Wayne Chang <waynec@nvidia.com>
To: <waynec@nvidia.com>, <jckuo@nvidia.com>, <vkoul@kernel.org>,
<kishon@kernel.org>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>
Cc: <linux-phy@lists.infradead.org>, <linux-tegra@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, Haotien Hsu <haotienh@nvidia.com>,
<stable@vger.kernel.org>
Subject: [PATCH 2/2] phy: tegra: xusb: Disable periodic tracking on Tegra234
Date: Wed, 7 May 2025 10:48:20 +0800 [thread overview]
Message-ID: <20250507024820.1648733-3-waynec@nvidia.com> (raw)
In-Reply-To: <20250507024820.1648733-1-waynec@nvidia.com>
From: Haotien Hsu <haotienh@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@vger.kernel.org
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
---
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 dd0aaf305e90..414f4eabfe9d 100644
--- a/drivers/phy/tegra/xusb-tegra186.c
+++ b/drivers/phy/tegra/xusb-tegra186.c
@@ -1703,7 +1703,7 @@ 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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prev parent reply other threads:[~2025-05-07 2:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-07 2:48 [PATCH 0/2] Disable periodic tracking on Tegra234 Wayne Chang
2025-05-07 2:48 ` [PATCH 1/2] phy: tegra: xusb: Decouple CYA_TRK_CODE_UPDATE_ON_IDLE from trk_hw_mode Wayne Chang
2025-05-07 9:39 ` Jon Hunter
2025-05-07 2:48 ` Wayne Chang [this message]
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