1 /*
2  * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
3  *
4  * Authors: Igor Grinberg <grinberg@compulab.co.il>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <common.h>
10 #include <status_led.h>
11 #include <net.h>
12 #include <netdev.h>
13 #include <usb.h>
14 #include <mmc.h>
15 #include <linux/compiler.h>
16 #include <linux/usb/musb.h>
17 
18 #include <asm/io.h>
19 #include <asm/arch/mem.h>
20 #include <asm/arch/am35x_def.h>
21 #include <asm/arch/mmc_host_def.h>
22 #include <asm/arch/sys_proto.h>
23 #include <asm/arch/musb.h>
24 #include <asm/omap_musb.h>
25 #include <asm/ehci-omap.h>
26 
27 #include "../common/common.h"
28 #include "../common/eeprom.h"
29 
30 DECLARE_GLOBAL_DATA_PTR;
31 
32 const omap3_sysinfo sysinfo = {
33 	DDR_DISCRETE,
34 	"CM-T3517 board",
35 	"NAND 128/512M",
36 };
37 
38 #ifdef CONFIG_USB_MUSB_AM35X
39 static struct musb_hdrc_config cm_t3517_musb_config = {
40 	.multipoint     = 1,
41 	.dyn_fifo       = 1,
42 	.num_eps        = 16,
43 	.ram_bits       = 12,
44 };
45 
46 static struct omap_musb_board_data cm_t3517_musb_board_data = {
47 	.set_phy_power		= am35x_musb_phy_power,
48 	.clear_irq		= am35x_musb_clear_irq,
49 	.reset			= am35x_musb_reset,
50 };
51 
52 static struct musb_hdrc_platform_data cm_t3517_musb_pdata = {
53 #if defined(CONFIG_USB_MUSB_HOST)
54 	.mode           = MUSB_HOST,
55 #elif defined(CONFIG_USB_MUSB_GADGET)
56 	.mode		= MUSB_PERIPHERAL,
57 #else
58 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
59 #endif
60 	.config         = &cm_t3517_musb_config,
61 	.power          = 250,
62 	.platform_ops	= &am35x_ops,
63 	.board_data	= &cm_t3517_musb_board_data,
64 };
65 
66 static void cm_t3517_musb_init(void)
67 {
68 	/*
69 	 * Set up USB clock/mode in the DEVCONF2 register.
70 	 * USB2.0 PHY reference clock is 13 MHz
71 	 */
72 	clrsetbits_le32(&am35x_scm_general_regs->devconf2,
73 			CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
74 			CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
75 			CONF2_VBDTCTEN | CONF2_DATPOL);
76 
77 	if (musb_register(&cm_t3517_musb_pdata, &cm_t3517_musb_board_data,
78 			  (void *)AM35XX_IPSS_USBOTGSS_BASE))
79 		printf("Failed initializing AM35x MUSB!\n");
80 }
81 #else
82 static inline void am3517_evm_musb_init(void) {}
83 #endif
84 
85 int board_init(void)
86 {
87 	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
88 
89 	/* boot param addr */
90 	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
91 
92 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
93 	status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
94 #endif
95 
96 	cm_t3517_musb_init();
97 
98 	return 0;
99 }
100 
101 /*
102  * Routine: get_board_rev
103  * Description: read system revision
104  */
105 u32 get_board_rev(void)
106 {
107 	return cl_eeprom_get_board_rev(CONFIG_SYS_I2C_EEPROM_BUS);
108 };
109 
110 int misc_init_r(void)
111 {
112 	cl_print_pcb_info();
113 	omap_die_id_display();
114 
115 	return 0;
116 }
117 
118 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
119 #define SB_T35_CD_GPIO 144
120 #define SB_T35_WP_GPIO 59
121 
122 int board_mmc_init(bd_t *bis)
123 {
124 	return omap_mmc_init(0, 0, 0, SB_T35_CD_GPIO, SB_T35_WP_GPIO);
125 }
126 #endif
127 
128 #ifdef CONFIG_DRIVER_TI_EMAC
129 #define CONTROL_EFUSE_EMAC_LSB  0x48002380
130 #define CONTROL_EFUSE_EMAC_MSB  0x48002384
131 
132 static int am3517_get_efuse_enetaddr(u8 *enetaddr)
133 {
134 	u32 lsb = __raw_readl(CONTROL_EFUSE_EMAC_LSB);
135 	u32 msb = __raw_readl(CONTROL_EFUSE_EMAC_MSB);
136 
137 	enetaddr[0] = (u8)((msb >> 16) & 0xff);
138 	enetaddr[1] = (u8)((msb >> 8)  & 0xff);
139 	enetaddr[2] = (u8)(msb & 0xff);
140 	enetaddr[3] = (u8)((lsb >> 16) & 0xff);
141 	enetaddr[4] = (u8)((lsb >> 8)  & 0xff);
142 	enetaddr[5] = (u8)(lsb & 0xff);
143 
144 	return is_valid_ethaddr(enetaddr);
145 }
146 
147 static inline int cm_t3517_init_emac(bd_t *bis)
148 {
149 	int ret = cpu_eth_init(bis);
150 
151 	if (ret > 0)
152 		return ret;
153 
154 	printf("Failed initializing EMAC! ");
155 	return 0;
156 }
157 #else /* !CONFIG_DRIVER_TI_EMAC */
158 static inline int am3517_get_efuse_enetaddr(u8 *enetaddr) { return 1; }
159 static inline int cm_t3517_init_emac(bd_t *bis) { return 0; }
160 #endif /* CONFIG_DRIVER_TI_EMAC */
161 
162 /*
163  * Routine: handle_mac_address
164  * Description: prepare MAC address for on-board Ethernet.
165  */
166 static int cm_t3517_handle_mac_address(void)
167 {
168 	unsigned char enetaddr[6];
169 	int ret;
170 
171 	ret = eth_getenv_enetaddr("ethaddr", enetaddr);
172 	if (ret)
173 		return 0;
174 
175 	ret = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
176 	if (ret) {
177 		ret = am3517_get_efuse_enetaddr(enetaddr);
178 		if (ret)
179 			return ret;
180 	}
181 
182 	if (!is_valid_ethaddr(enetaddr))
183 		return -1;
184 
185 	return eth_setenv_enetaddr("ethaddr", enetaddr);
186 }
187 
188 #define SB_T35_ETH_RST_GPIO 164
189 
190 /*
191  * Routine: board_eth_init
192  * Description: initialize module and base-board Ethernet chips
193  */
194 int board_eth_init(bd_t *bis)
195 {
196 	int rc = 0, rc1 = 0;
197 
198 	rc1 = cm_t3517_handle_mac_address();
199 	if (rc1)
200 		printf("No MAC address found! ");
201 
202 	rc1 = cm_t3517_init_emac(bis);
203 	if (rc1 > 0)
204 		rc++;
205 
206 	rc1 = cl_omap3_smc911x_init(0, 4, CONFIG_SMC911X_BASE,
207 				    NULL, SB_T35_ETH_RST_GPIO);
208 	if (rc1 > 0)
209 		rc++;
210 
211 	return rc;
212 }
213 
214 #ifdef CONFIG_USB_EHCI_OMAP
215 static struct omap_usbhs_board_data cm_t3517_usbhs_bdata = {
216 	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
217 	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
218 	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
219 };
220 
221 #define CM_T3517_USB_HUB_RESET_GPIO	152
222 #define SB_T35_USB_HUB_RESET_GPIO	98
223 
224 int ehci_hcd_init(int index, enum usb_init_type init,
225 			struct ehci_hccr **hccr, struct ehci_hcor **hcor)
226 {
227 	cl_usb_hub_init(CM_T3517_USB_HUB_RESET_GPIO, "cm-t3517 hub rst");
228 	cl_usb_hub_init(SB_T35_USB_HUB_RESET_GPIO, "sb-t35 hub rst");
229 
230 	return omap_ehci_hcd_init(index, &cm_t3517_usbhs_bdata, hccr, hcor);
231 }
232 
233 int ehci_hcd_stop(void)
234 {
235 	cl_usb_hub_deinit(CM_T3517_USB_HUB_RESET_GPIO);
236 	cl_usb_hub_deinit(SB_T35_USB_HUB_RESET_GPIO);
237 
238 	return omap_ehci_hcd_stop();
239 }
240 #endif /* CONFIG_USB_EHCI_OMAP */
241