1 /*
2  * Copyright 2015 Broadcom Corporation.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <config.h>
8 #include <common.h>
9 #include <asm/io.h>
10 #include <asm/arch/sysmap.h>
11 
12 #include <usb/s3c_udc.h>
13 #include "bcm_udc_otg.h"
14 
15 void otg_phy_init(struct s3c_udc *dev)
16 {
17 	/* set Phy to driving mode */
18 	wfld_clear(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
19 		   HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK);
20 
21 	udelay(100);
22 
23 	/* clear Soft Disconnect */
24 	wfld_clear(HSOTG_BASE_ADDR + HSOTG_DCTL_OFFSET,
25 		   HSOTG_DCTL_SFTDISCON_MASK);
26 
27 	/* invoke Reset (active low) */
28 	wfld_clear(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
29 		   HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK);
30 
31 	/* Reset needs to be asserted for 2ms */
32 	udelay(2000);
33 
34 	/* release Reset */
35 	wfld_set(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
36 		 HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK,
37 		 HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK);
38 }
39 
40 void otg_phy_off(struct s3c_udc *dev)
41 {
42 	/* Soft Disconnect */
43 	wfld_set(HSOTG_BASE_ADDR + HSOTG_DCTL_OFFSET,
44 		 HSOTG_DCTL_SFTDISCON_MASK,
45 		 HSOTG_DCTL_SFTDISCON_MASK);
46 
47 	/* set Phy to non-driving (reset) mode */
48 	wfld_set(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
49 		 HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK,
50 		 HSOTG_CTRL_PHY_P1CTL_NON_DRIVING_MASK);
51 }
52