From e5f9124404d0c11fd19d1431901bcf76c535e241 Mon Sep 17 00:00:00 2001 From: Wayne Chang Date: Wed, 11 Jan 2023 11:04:48 +0000 Subject: 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: Wayne Chang Signed-off-by: Jon Hunter Link: https://lore.kernel.org/r/20230111110450.24617-5-jonathanh@nvidia.com Signed-off-by: Vinod Koul --- drivers/phy/tegra/xusb-tegra186.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/phy/tegra') diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c index 6a8bd87cfdbd..c00d14f27ab4 100644 --- a/drivers/phy/tegra/xusb-tegra186.c +++ b/drivers/phy/tegra/xusb-tegra186.c @@ -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); } -- cgit v1.2.3