usb/dwc3/samsung_usb_phy.c

1 // SPDX-License-Identifier: GPL-2.0
3  * samsung_usb_phy.c - DesignWare USB3 (DWC3) PHY handling file
12 #include <asm/arch/xhci-exynos.h>
19 	writel(0x0, &phy->phy_reg0);  in exynos5_usb3_phy_init()
21 	clrbits_le32(&phy->phy_param0,  in exynos5_usb3_phy_init()
24 			/* Set Loss-of-Signal Detector sensitivity */  in exynos5_usb3_phy_init()
26 	setbits_le32(&phy->phy_param0, PHYPARAM0_REF_LOSLEVEL);  in exynos5_usb3_phy_init()
29 	writel(0x0, &phy->phy_resume);  in exynos5_usb3_phy_init()
35 	setbits_le32(&phy->link_system,  in exynos5_usb3_phy_init()
39 	/* Set Tx De-Emphasis level */  in exynos5_usb3_phy_init()
40 	clrbits_le32(&phy->phy_param1, PHYPARAM1_PCS_TXDEEMPH_MASK);  in exynos5_usb3_phy_init()
41 	setbits_le32(&phy->phy_param1, PHYPARAM1_PCS_TXDEEMPH);  in exynos5_usb3_phy_init()
43 	setbits_le32(&phy->phy_batchg, PHYBATCHG_UTMI_CLKSEL);  in exynos5_usb3_phy_init()
46 	clrbits_le32(&phy->phy_test,  in exynos5_usb3_phy_init()
51 	writel(PHYUTMI_OTGDISABLE, &phy->phy_utmi);  in exynos5_usb3_phy_init()
65 		/* Enable spread spectrum */  in exynos5_usb3_phy_init()
70 	writel(reg, &phy->phy_clk_rst);  in exynos5_usb3_phy_init()
76 	writel(reg, &phy->phy_clk_rst);  in exynos5_usb3_phy_init()