xref: /openbmc/u-boot/board/varisys/cyrus/eth.c (revision 5994e8b6)
1 /*
2  * Author Adrian Cox
3  * Based somewhat on board/freescale/corenet_ds/eth_hydra.c
4  *
5  * SPDX-License-Identifier:    GPL-2.0+
6  */
7 
8 #include <common.h>
9 #include <netdev.h>
10 #include <asm/fsl_serdes.h>
11 #include <fm_eth.h>
12 #include <fsl_mdio.h>
13 #include <malloc.h>
14 #include <fdt_support.h>
15 #include <fsl_dtsec.h>
16 
17 #ifdef CONFIG_FMAN_ENET
18 
19 #define FIRST_PORT_ADDR 3
20 #define SECOND_PORT_ADDR 7
21 
22 #ifdef CONFIG_ARCH_P5040
23 #define FIRST_PORT FM1_DTSEC5
24 #define SECOND_PORT FM2_DTSEC5
25 #else
26 #define FIRST_PORT FM1_DTSEC4
27 #define SECOND_PORT FM1_DTSEC5
28 #endif
29 
30 #define IS_VALID_PORT(p)  ((p) == FIRST_PORT || (p) == SECOND_PORT)
31 
32 static void cyrus_phy_tuning(int phy)
33 {
34 	/*
35 	 * Enable RGMII delay on Tx and Rx for CPU port
36 	 */
37 	printf("Tuning PHY @ %d\n", phy);
38 
39 	/* sets address 0x104 or reg 260 for writing */
40 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0xb, 0x8104);
41 	/* Sets RXC/TXC to +0.96ns and TX_CTL/RX_CTL to -0.84ns */
42 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0xc, 0xf0f0);
43 	/* sets address 0x105 or reg 261 for writing */
44 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0xb, 0x8105);
45 	/* writes to address 0x105 , RXD[3..0] to -0. */
46 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0xc, 0x0000);
47 	/* sets address 0x106 or reg 261 for writing */
48 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0xb, 0x8106);
49 	/* writes to address 0x106 , TXD[3..0] to -0.84ns */
50 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0xc, 0x0000);
51 	/* force re-negotiation */
52 	miiphy_write(DEFAULT_FM_MDIO_NAME, phy, 0x0, 0x1340);
53 }
54 #endif
55 
56 int board_eth_init(bd_t *bis)
57 {
58 #ifdef CONFIG_FMAN_ENET
59 	struct fsl_pq_mdio_info dtsec_mdio_info;
60 	unsigned int i;
61 
62 	printf("Initializing Fman\n");
63 
64 
65 	/* Register the real 1G MDIO bus */
66 	dtsec_mdio_info.regs =
67 		(struct tsec_mii_mng *)CONFIG_SYS_FM1_DTSEC1_MDIO_ADDR;
68 	dtsec_mdio_info.name = DEFAULT_FM_MDIO_NAME;
69 
70 	fsl_pq_mdio_init(bis, &dtsec_mdio_info);
71 
72 
73 	fm_info_set_phy_address(FIRST_PORT, FIRST_PORT_ADDR);
74 	fm_info_set_mdio(FIRST_PORT,
75 			miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME));
76 	fm_info_set_phy_address(SECOND_PORT, SECOND_PORT_ADDR);
77 	fm_info_set_mdio(SECOND_PORT,
78 			miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME));
79 
80 	/* Never disable DTSEC1 - it controls MDIO */
81 	for (i = FM1_DTSEC2; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
82 		if (!IS_VALID_PORT(i))
83 			fm_disable_port(i);
84 	}
85 
86 #ifdef CONFIG_ARCH_P5040
87 	for (i = FM2_DTSEC2; i < FM2_DTSEC1 + CONFIG_SYS_NUM_FM2_DTSEC; i++) {
88 		if (!IS_VALID_PORT(i))
89 			fm_disable_port(i);
90 	}
91 #endif
92 
93 	cpu_eth_init(bis);
94 
95 	cyrus_phy_tuning(FIRST_PORT_ADDR);
96 	cyrus_phy_tuning(SECOND_PORT_ADDR);
97 #endif
98 
99 	return pci_eth_init(bis);
100 }
101