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phy: tegra: xusb: Disable trk clk when not in use

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Pad tracking is a one-time calibration for Tegra186 and Tegra194.
Clk should be disabled after calibration.

Disable clk after calibration.
While at it add 100us delay for HW recording the calibration value.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230111110450.24617-5-jonathanh@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wayne Chang 2023-01-11 11:04:48 +00:00 committed by Greg Kroah-Hartman
parent 1b17df9973
commit 71d9e89958
1 changed files with 4 additions and 2 deletions
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6
drivers/phy/tegra/xusb-tegra186.c
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@ -609,6 +609,10 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl)
value &= ~USB2_PD_TRK;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);
udelay(100);
clk_disable_unprepare(priv->usb2_trk_clk);
mutex_unlock(&padctl->lock);
}
@ -633,8 +637,6 @@ static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl)
value |= USB2_PD_TRK;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);
clk_disable_unprepare(priv->usb2_trk_clk);
mutex_unlock(&padctl->lock);
}