1 /*
2 * Copyright (c) 2021-2023 HPMicro
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 */
7
8 /*---------------------------------------------------------------------
9 * Includes
10 *---------------------------------------------------------------------
11 */
12 #include "hpm_enet_drv.h"
13 #include "hpm_rtl8201_regs.h"
14 #include "hpm_rtl8201.h"
15 #include "board.h"
16
17 /*---------------------------------------------------------------------
18 * Internal API
19 *---------------------------------------------------------------------
20 */
rtl8201_check_id(ENET_Type * ptr)21 static bool rtl8201_check_id(ENET_Type *ptr)
22 {
23 uint16_t id1, id2;
24
25 id1 = enet_read_phy(ptr, RTL8201_ADDR, RTL8201_PHYID1);
26 id2 = enet_read_phy(ptr, RTL8201_ADDR, RTL8201_PHYID2);
27
28 if (RTL8201_PHYID1_OUI_MSB_GET(id1) == RTL8201_ID1 && RTL8201_PHYID2_OUI_LSB_GET(id2) == RTL8201_ID2) {
29 return true;
30 } else {
31 return false;
32 }
33 }
34
35 /*---------------------------------------------------------------------
36 * API
37 *---------------------------------------------------------------------
38 */
rtl8201_reset(ENET_Type * ptr)39 void rtl8201_reset(ENET_Type *ptr)
40 {
41 uint16_t data;
42
43 /* PHY reset */
44 enet_write_phy(ptr, RTL8201_ADDR, RTL8201_BMCR, RTL8201_BMCR_RESET_SET(1));
45
46 /* wait until the reset is completed */
47 do {
48 data = enet_read_phy(ptr, RTL8201_ADDR, RTL8201_BMCR);
49 } while (RTL8201_BMCR_RESET_GET(data));
50 }
51
rtl8201_basic_mode_default_config(ENET_Type * ptr,rtl8201_config_t * config)52 void rtl8201_basic_mode_default_config(ENET_Type *ptr, rtl8201_config_t *config)
53 {
54 (void)ptr;
55
56 config->loopback = 0; /* Disable PCS loopback mode */
57 #if defined(__DISABLE_AUTO_NEGO) && (__DISABLE_AUTO_NEGO)
58 config->auto_negotiation = false; /* Disable Auto-Negotiation */
59 config->speed = enet_phy_port_speed_100mbps;
60 config->duplex = enet_phy_duplex_full;
61 #else
62 config->auto_negotiation = 1; /* Enable Auto-Negotiation */
63 #endif
64 config->txc_input = true; /* Set TXC as input mode */
65 }
66
rtl8201_basic_mode_init(ENET_Type * ptr,rtl8201_config_t * config)67 bool rtl8201_basic_mode_init(ENET_Type *ptr, rtl8201_config_t *config)
68 {
69 uint16_t data = 0;
70
71 data |= RTL8201_BMCR_RESET_SET(0) /* Normal operation */
72 | RTL8201_BMCR_LOOPBACK_SET(config->loopback) /* configure PCS loopback mode */
73 | RTL8201_BMCR_ANE_SET(config->auto_negotiation) /* configure Auto-Negotiation */
74 | RTL8201_BMCR_PWD_SET(0) /* Normal operation */
75 | RTL8201_BMCR_ISOLATE_SET(0) /* Normal operation */
76 | RTL8201_BMCR_RESTART_AN_SET(0) /* Normal operation (ignored when Auto-Negotiation is disabled) */
77 | RTL8201_BMCR_COLLISION_TEST_SET(0); /* Normal operation */
78
79 if (config->auto_negotiation == 0) {
80 data |= RTL8201_BMCR_SPEED0_SET(config->speed); /* Set port speed */
81 data |= RTL8201_BMCR_DUPLEX_SET(config->duplex); /* Set duplex mode */
82 }
83
84 /* check the id of rtl8201 */
85 if (rtl8201_check_id(ptr) == false) {
86 return false;
87 }
88
89 enet_write_phy(ptr, RTL8201_ADDR, RTL8201_BMCR, data);
90
91 /* select page 7 */
92 enet_write_phy(ptr, RTL8201_ADDR, RTL8201_PAGESEL, 7);
93
94 /* set txc direction */
95 data = enet_read_phy(ptr, RTL8201_ADDR, RTL8201_RMSR_P7);
96 data &= ~RTL8201_RMSR_P7_RG_RMII_CLKDIR_MASK;
97 data |= RTL8201_RMSR_P7_RG_RMII_CLKDIR_SET(config->txc_input);
98 enet_write_phy(ptr, RTL8201_ADDR, RTL8201_RMSR_P7, data);
99
100 return true;
101 }
102
rtl8201_get_phy_status(ENET_Type * ptr,enet_phy_status_t * status)103 void rtl8201_get_phy_status(ENET_Type *ptr, enet_phy_status_t *status)
104 {
105 uint16_t data;
106
107 data = enet_read_phy(ptr, RTL8201_ADDR, RTL8201_BMSR);
108 status->enet_phy_link = RTL8201_BMSR_LINK_STATUS_GET(data);
109
110 data = enet_read_phy(ptr, RTL8201_ADDR, RTL8201_BMCR);
111 status->enet_phy_speed = RTL8201_BMCR_SPEED0_GET(data) == 0 ? enet_phy_port_speed_10mbps : enet_phy_port_speed_100mbps;
112 status->enet_phy_duplex = RTL8201_BMCR_DUPLEX_GET(data);
113 }
114