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[u-boot] / board / compulab / cm_t54 / cm_t54.c
1 /*
2  * Board functions for Compulab CM-T54 board
3  *
4  * Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/
5  *
6  * Author: Dmitry Lifshitz <lifshitz@compulab.co.il>
7  *
8  * SPDX-License-Identifier:     GPL-2.0+
9  */
10
11 #include <common.h>
12 #include <fdt_support.h>
13 #include <usb.h>
14 #include <mmc.h>
15 #include <palmas.h>
16 #include <spl.h>
17
18 #include <asm/gpio.h>
19 #include <asm/arch/sys_proto.h>
20 #include <asm/arch/mmc_host_def.h>
21 #include <asm/arch/clock.h>
22 #include <asm/arch/ehci.h>
23 #include <asm/ehci-omap.h>
24
25 #include "../common/eeprom.h"
26
27 #define DIE_ID_REG_BASE         (OMAP54XX_L4_CORE_BASE + 0x2000)
28 #define DIE_ID_REG_OFFSET       0x200
29
30 DECLARE_GLOBAL_DATA_PTR;
31
32 #if !defined(CONFIG_SPL_BUILD)
33 inline void set_muxconf_regs(void){};
34 #endif
35
36 const struct omap_sysinfo sysinfo = {
37         "Board: CM-T54\n"
38 };
39
40 /*
41  * Routine: board_init
42  * Description: hardware init.
43  */
44 int board_init(void)
45 {
46         gd->bd->bi_boot_params = (CONFIG_SYS_SDRAM_BASE + 0x100);
47
48         return 0;
49 }
50
51 /*
52  * Routine: cm_t54_palmas_regulator_set
53  * Description:  select voltage and turn on/off Palmas PMIC regulator.
54  */
55 static int cm_t54_palmas_regulator_set(u8 vreg, u8 vval, u8 creg, u8 cval)
56 {
57         int err;
58
59         /* Setup voltage */
60         err = palmas_i2c_write_u8(TWL603X_CHIP_P1, vreg, vval);
61         if (err) {
62                 printf("cm_t54: could not set regulator 0x%02x voltage : %d\n",
63                        vreg, err);
64                 return err;
65         }
66
67         /* Turn on/off regulator */
68         err = palmas_i2c_write_u8(TWL603X_CHIP_P1, creg, cval);
69         if (err) {
70                 printf("cm_t54: could not turn on/off regulator 0x%02x : %d\n",
71                        creg, err);
72                 return err;
73         }
74
75         return 0;
76 }
77
78 /*
79  * Routine: mmc_get_env_part
80  * Description:  setup environment storage device partition.
81  */
82 #ifdef CONFIG_SYS_MMC_ENV_PART
83 uint mmc_get_env_part(struct mmc *mmc)
84 {
85         u32 bootmode = gd->arch.omap_boot_mode;
86         uint bootpart = CONFIG_SYS_MMC_ENV_PART;
87
88         /*
89          * If booted from eMMC boot partition then force eMMC
90          * FIRST boot partition to be env storage
91          */
92         if (bootmode == BOOT_DEVICE_MMC2)
93                 bootpart = 1;
94
95         return bootpart;
96 }
97 #endif
98
99 #if defined(CONFIG_MMC)
100 #define SB_T54_CD_GPIO 228
101 #define SB_T54_WP_GPIO 229
102
103 int board_mmc_init(bd_t *bis)
104 {
105         int ret0, ret1;
106
107         ret0 = omap_mmc_init(0, 0, 0, SB_T54_CD_GPIO, SB_T54_WP_GPIO);
108         if (ret0)
109                 printf("cm_t54: failed to initialize mmc0\n");
110
111         ret1 = omap_mmc_init(1, 0, 0, -1, -1);
112         if (ret1)
113                 printf("cm_t54: failed to initialize mmc1\n");
114
115         if (ret0 && ret1)
116                 return -1;
117
118         return 0;
119 }
120 #endif
121
122 #ifdef CONFIG_USB_HOST_ETHER
123
124 int ft_board_setup(void *blob, bd_t *bd)
125 {
126         uint8_t enetaddr[6];
127
128         /* MAC addr */
129         if (eth_getenv_enetaddr("usbethaddr", enetaddr)) {
130                 fdt_find_and_setprop(blob, "/smsc95xx@0", "mac-address",
131                                      enetaddr, 6, 1);
132         }
133
134         return 0;
135 }
136
137 static void generate_mac_addr(uint8_t *enetaddr)
138 {
139         int reg;
140
141         reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
142
143         /*
144          * create a fake MAC address from the processor ID code.
145          * first byte is 0x02 to signify locally administered.
146          */
147         enetaddr[0] = 0x02;
148         enetaddr[1] = readl(reg + 0x10) & 0xff;
149         enetaddr[2] = readl(reg + 0xC) & 0xff;
150         enetaddr[3] = readl(reg + 0x8) & 0xff;
151         enetaddr[4] = readl(reg) & 0xff;
152         enetaddr[5] = (readl(reg) >> 8) & 0xff;
153 }
154
155 /*
156  * Routine: handle_mac_address
157  * Description: prepare MAC address for on-board Ethernet.
158  */
159 static int handle_mac_address(void)
160 {
161         uint8_t enetaddr[6];
162         int ret;
163
164         ret = eth_getenv_enetaddr("usbethaddr", enetaddr);
165         if (ret)
166                 return 0;
167
168         ret = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
169         if (ret || !is_valid_ethaddr(enetaddr))
170                 generate_mac_addr(enetaddr);
171
172         if (!is_valid_ethaddr(enetaddr))
173                 return -1;
174
175         return eth_setenv_enetaddr("usbethaddr", enetaddr);
176 }
177
178 int board_eth_init(bd_t *bis)
179 {
180         return handle_mac_address();
181 }
182 #endif
183
184 #ifdef CONFIG_USB_EHCI_HCD
185 static struct omap_usbhs_board_data usbhs_bdata = {
186         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
187         .port_mode[1] = OMAP_EHCI_PORT_MODE_HSIC,
188         .port_mode[2] = OMAP_EHCI_PORT_MODE_HSIC,
189 };
190
191 static void setup_host_clocks(bool enable)
192 {
193         int usbhost_clk = OPTFCLKEN_HSIC60M_P3_CLK |
194                           OPTFCLKEN_HSIC480M_P3_CLK |
195                           OPTFCLKEN_HSIC60M_P2_CLK |
196                           OPTFCLKEN_HSIC480M_P2_CLK |
197                           OPTFCLKEN_UTMI_P3_CLK |
198                           OPTFCLKEN_UTMI_P2_CLK;
199
200         int usbtll_clk = OPTFCLKEN_USB_CH1_CLK_ENABLE |
201                          OPTFCLKEN_USB_CH2_CLK_ENABLE;
202
203         int usbhub_clk = CKOBUFFER_CLK_ENABLE_MASK;
204
205         if (enable) {
206                 /* Enable port 2 and 3 clocks*/
207                 setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
208                 /* Enable port 2 and 3 usb host ports tll clocks*/
209                 setbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
210                 /* Request FREF_XTAL_CLK clock for HSIC USB Hub */
211                 setbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
212         } else {
213                 clrbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
214                 clrbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
215                 clrbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
216         }
217 }
218
219 int ehci_hcd_init(int index, enum usb_init_type init,
220                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
221 {
222         int ret;
223
224         /* VCC_3V3_ETH */
225         cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_3V3, SMPS9_CTRL,
226                                     SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO);
227
228         setup_host_clocks(true);
229
230         ret = omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
231         if (ret < 0)
232                 printf("cm_t54: Failed to initialize ehci : %d\n", ret);
233
234         return ret;
235 }
236
237 int ehci_hcd_stop(void)
238 {
239         int ret = omap_ehci_hcd_stop();
240
241         setup_host_clocks(false);
242
243         cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_OFF,
244                                     SMPS9_CTRL, SMPS_MODE_SLP_AUTO);
245
246         return ret;
247 }
248
249 void usb_hub_reset_devices(int port)
250 {
251         /* The LAN9730 needs to be reset after the port power has been set. */
252         if (port == 3) {
253                 gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 0);
254                 udelay(10);
255                 gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 1);
256         }
257 }
258 #endif
259