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