]> git.kernelconcepts.de Git - karo-tx-uboot.git/blob - board/compulab/cm_t335/cm_t335.c
cm_t335: add cm_t335 board support
[karo-tx-uboot.git] / board / compulab / cm_t335 / cm_t335.c
1 /*
2  * Board functions for Compulab CM-T335 board
3  *
4  * Copyright (C) 2013, Compulab Ltd - http://compulab.co.il/
5  *
6  * Author: Ilya Ledvich <ilya@compulab.co.il>
7  *
8  * SPDX-License-Identifier:     GPL-2.0+
9  */
10
11 #include <common.h>
12 #include <errno.h>
13 #include <miiphy.h>
14 #include <cpsw.h>
15
16 #include <asm/arch/sys_proto.h>
17 #include <asm/arch/hardware_am33xx.h>
18 #include <asm/io.h>
19 #include <asm/gpio.h>
20
21 #include "../common/eeprom.h"
22
23 DECLARE_GLOBAL_DATA_PTR;
24
25 /*
26  * Basic board specific setup.  Pinmux has been handled already.
27  */
28 int board_init(void)
29 {
30         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
31
32         gpmc_init();
33
34         return 0;
35 }
36
37 #if defined (CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)
38 static void cpsw_control(int enabled)
39 {
40         /* VTP can be added here */
41         return;
42 }
43
44 static struct cpsw_slave_data cpsw_slave = {
45         .slave_reg_ofs  = 0x208,
46         .sliver_reg_ofs = 0xd80,
47         .phy_id         = 0,
48         .phy_if         = PHY_INTERFACE_MODE_RGMII,
49 };
50
51 static struct cpsw_platform_data cpsw_data = {
52         .mdio_base              = CPSW_MDIO_BASE,
53         .cpsw_base              = CPSW_BASE,
54         .mdio_div               = 0xff,
55         .channels               = 8,
56         .cpdma_reg_ofs          = 0x800,
57         .slaves                 = 1,
58         .slave_data             = &cpsw_slave,
59         .ale_reg_ofs            = 0xd00,
60         .ale_entries            = 1024,
61         .host_port_reg_ofs      = 0x108,
62         .hw_stats_reg_ofs       = 0x900,
63         .bd_ram_ofs             = 0x2000,
64         .mac_control            = (1 << 5),
65         .control                = cpsw_control,
66         .host_port_num          = 0,
67         .version                = CPSW_CTRL_VERSION_2,
68 };
69
70 /* PHY reset GPIO */
71 #define GPIO_PHY_RST            GPIO_PIN(3, 7)
72
73 static void board_phy_init(void)
74 {
75         gpio_request(GPIO_PHY_RST, "phy_rst");
76         gpio_direction_output(GPIO_PHY_RST, 0);
77         mdelay(2);
78         gpio_set_value(GPIO_PHY_RST, 1);
79         mdelay(2);
80 }
81
82 static void get_efuse_mac_addr(uchar *enetaddr)
83 {
84         uint32_t mac_hi, mac_lo;
85         struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
86
87         mac_lo = readl(&cdev->macid0l);
88         mac_hi = readl(&cdev->macid0h);
89         enetaddr[0] = mac_hi & 0xFF;
90         enetaddr[1] = (mac_hi & 0xFF00) >> 8;
91         enetaddr[2] = (mac_hi & 0xFF0000) >> 16;
92         enetaddr[3] = (mac_hi & 0xFF000000) >> 24;
93         enetaddr[4] = mac_lo & 0xFF;
94         enetaddr[5] = (mac_lo & 0xFF00) >> 8;
95 }
96
97 /*
98  * Routine: handle_mac_address
99  * Description: prepare MAC address for on-board Ethernet.
100  */
101 static int handle_mac_address(void)
102 {
103         uchar enetaddr[6];
104         int rv;
105
106         rv = eth_getenv_enetaddr("ethaddr", enetaddr);
107         if (rv)
108                 return 0;
109
110         rv = cl_eeprom_read_mac_addr(enetaddr);
111         if (rv)
112                 get_efuse_mac_addr(enetaddr);
113
114         if (!is_valid_ether_addr(enetaddr))
115                 return -1;
116
117         return eth_setenv_enetaddr("ethaddr", enetaddr);
118 }
119
120 #define AR8051_PHY_DEBUG_ADDR_REG       0x1d
121 #define AR8051_PHY_DEBUG_DATA_REG       0x1e
122 #define AR8051_DEBUG_RGMII_CLK_DLY_REG  0x5
123 #define AR8051_RGMII_TX_CLK_DLY         0x100
124
125 int board_eth_init(bd_t *bis)
126 {
127         int rv, n = 0;
128         const char *devname;
129         struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
130
131         rv = handle_mac_address();
132         if (rv)
133                 printf("No MAC address found!\n");
134
135         writel(RGMII_MODE_ENABLE | RGMII_INT_DELAY, &cdev->miisel);
136
137         board_phy_init();
138
139         rv = cpsw_register(&cpsw_data);
140         if (rv < 0)
141                 printf("Error %d registering CPSW switch\n", rv);
142         else
143                 n += rv;
144
145         /*
146          * CPSW RGMII Internal Delay Mode is not supported in all PVT
147          * operating points.  So we must set the TX clock delay feature
148          * in the AR8051 PHY.  Since we only support a single ethernet
149          * device, we only do this for the first instance.
150          */
151         devname = miiphy_get_current_dev();
152
153         miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_ADDR_REG,
154                      AR8051_DEBUG_RGMII_CLK_DLY_REG);
155         miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_DATA_REG,
156                      AR8051_RGMII_TX_CLK_DLY);
157         return n;
158 }
159 #endif /* CONFIG_DRIVER_TI_CPSW && !CONFIG_SPL_BUILD */