xref: /openbmc/u-boot/board/compulab/cm_t54/cm_t54.c (revision e8f80a5a)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Board functions for Compulab CM-T54 board
4  *
5  * Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/
6  *
7  * Author: Dmitry Lifshitz <lifshitz@compulab.co.il>
8  */
9 
10 #include <common.h>
11 #include <environment.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)
set_muxconf_regs(void)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  */
board_init(void)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  */
cm_t54_palmas_regulator_set(u8 vreg,u8 vval,u8 creg,u8 cval)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
mmc_get_env_part(struct mmc * mmc)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 
board_mmc_init(bd_t * bis)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 
ft_board_setup(void * blob,bd_t * bd)124 int ft_board_setup(void *blob, bd_t *bd)
125 {
126 	uint8_t enetaddr[6];
127 
128 	/* MAC addr */
129 	if (eth_env_get_enetaddr("usbethaddr", enetaddr)) {
130 		fdt_find_and_setprop(blob, "/smsc95xx@0", "mac-address",
131 				     enetaddr, 6, 1);
132 	}
133 
134 	return 0;
135 }
136 
generate_mac_addr(uint8_t * enetaddr)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  */
handle_mac_address(void)159 static int handle_mac_address(void)
160 {
161 	uint8_t enetaddr[6];
162 	int ret;
163 
164 	ret = eth_env_get_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_env_set_enetaddr("usbethaddr", enetaddr);
176 }
177 
board_eth_init(bd_t * bis)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 
setup_host_clocks(bool enable)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 
ehci_hcd_init(int index,enum usb_init_type init,struct ehci_hccr ** hccr,struct ehci_hcor ** hcor)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 
ehci_hcd_stop(void)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 
usb_hub_reset_devices(struct usb_hub_device * hub,int port)249 void usb_hub_reset_devices(struct usb_hub_device *hub, 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 
260