Commit 71d9e899 authored by Wayne Chang's avatar Wayne Chang Committed by Greg Kroah-Hartman
Browse files

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



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: default avatarWayne Chang <waynec@nvidia.com>
Signed-off-by: default avatarJon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230111110450.24617-5-jonathanh@nvidia.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1b17df99

drivers/phy/tegra/xusb-tegra186.c

+4 −2
Original line number Diff line number Diff line
@@ -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);

}