1 /*
2  * Copyright (C) 2017 NXP Semiconductors
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <asm/arch/clock.h>
8 #include <asm/arch/crm_regs.h>
9 #include <asm/arch/imx-regs.h>
10 #include <asm/arch/mx7-pins.h>
11 #include <asm/arch/sys_proto.h>
12 #include <asm/gpio.h>
13 #include <asm/mach-imx/iomux-v3.h>
14 #include <asm/mach-imx/mxc_i2c.h>
15 #include <asm/io.h>
16 #include <common.h>
17 #include <fsl_esdhc.h>
18 #include <i2c.h>
19 #include <miiphy.h>
20 #include <mmc.h>
21 #include <netdev.h>
22 #include <usb.h>
23 #include <power/pmic.h>
24 #include <power/pfuze3000_pmic.h>
25 #include "../../freescale/common/pfuze.h"
26 
27 DECLARE_GLOBAL_DATA_PTR;
28 
29 #define UART_PAD_CTRL  (PAD_CTL_DSE_3P3V_49OHM | \
30 	PAD_CTL_PUS_PU100KOHM | PAD_CTL_HYS)
31 
32 #define USDHC_PAD_CTRL (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
33 	PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU47KOHM)
34 
35 #define ENET_PAD_CTRL  (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
36 #define ENET_PAD_CTRL_MII  (PAD_CTL_DSE_3P3V_32OHM)
37 
38 #define ENET_RX_PAD_CTRL  (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
39 
40 #define I2C_PAD_CTRL    (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
41 	PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU100KOHM)
42 
43 #ifdef CONFIG_SYS_I2C_MXC
44 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
45 /* I2C4 for PMIC */
46 static struct i2c_pads_info i2c_pad_info4 = {
47 	.scl = {
48 		.i2c_mode = MX7D_PAD_SAI1_RX_SYNC__I2C4_SCL | PC,
49 		.gpio_mode = MX7D_PAD_SAI1_RX_SYNC__GPIO6_IO16 | PC,
50 		.gp = IMX_GPIO_NR(6, 16),
51 	},
52 	.sda = {
53 		.i2c_mode = MX7D_PAD_SAI1_RX_BCLK__I2C4_SDA | PC,
54 		.gpio_mode = MX7D_PAD_SAI1_RX_BCLK__GPIO6_IO17 | PC,
55 		.gp = IMX_GPIO_NR(6, 17),
56 	},
57 };
58 #endif
59 
60 int dram_init(void)
61 {
62 	gd->ram_size = PHYS_SDRAM_SIZE;
63 
64 	return 0;
65 }
66 
67 #ifdef CONFIG_POWER
68 #define I2C_PMIC	3
69 int power_init_board(void)
70 {
71 	struct pmic *p;
72 	int ret;
73 	unsigned int reg, rev_id;
74 
75 	ret = power_pfuze3000_init(I2C_PMIC);
76 	if (ret)
77 		return ret;
78 
79 	p = pmic_get("PFUZE3000");
80 	ret = pmic_probe(p);
81 	if (ret)
82 		return ret;
83 
84 	pmic_reg_read(p, PFUZE3000_DEVICEID, &reg);
85 	pmic_reg_read(p, PFUZE3000_REVID, &rev_id);
86 	printf("PMIC:  PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", reg, rev_id);
87 
88 	/* disable Low Power Mode during standby mode */
89 	pmic_reg_read(p, PFUZE3000_LDOGCTL, &reg);
90 	reg |= 0x1;
91 	pmic_reg_write(p, PFUZE3000_LDOGCTL, reg);
92 
93 	/* SW1A/1B mode set to APS/APS */
94 	reg = 0x8;
95 	pmic_reg_write(p, PFUZE3000_SW1AMODE, reg);
96 	pmic_reg_write(p, PFUZE3000_SW1BMODE, reg);
97 
98 	/* SW1A/1B standby voltage set to 1.025V */
99 	reg = 0xd;
100 	pmic_reg_write(p, PFUZE3000_SW1ASTBY, reg);
101 	pmic_reg_write(p, PFUZE3000_SW1BSTBY, reg);
102 
103 	/* decrease SW1B normal voltage to 0.975V */
104 	pmic_reg_read(p, PFUZE3000_SW1BVOLT, &reg);
105 	reg &= ~0x1f;
106 	reg |= PFUZE3000_SW1AB_SETP(975);
107 	pmic_reg_write(p, PFUZE3000_SW1BVOLT, reg);
108 
109 	return 0;
110 }
111 #endif
112 
113 static iomux_v3_cfg_t const wdog_pads[] = {
114 	MX7D_PAD_GPIO1_IO00__WDOG1_WDOG_B | MUX_PAD_CTRL(NO_PAD_CTRL),
115 };
116 
117 static iomux_v3_cfg_t const uart5_pads[] = {
118 	MX7D_PAD_I2C4_SCL__UART5_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
119 	MX7D_PAD_I2C4_SDA__UART5_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
120 };
121 
122 static iomux_v3_cfg_t const usdhc3_emmc_pads[] = {
123 	MX7D_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
124 	MX7D_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
125 	MX7D_PAD_SD3_DATA0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
126 	MX7D_PAD_SD3_DATA1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
127 	MX7D_PAD_SD3_DATA2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
128 	MX7D_PAD_SD3_DATA3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
129 	MX7D_PAD_SD3_DATA4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
130 	MX7D_PAD_SD3_DATA5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
131 	MX7D_PAD_SD3_DATA6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
132 	MX7D_PAD_SD3_DATA7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
133 	MX7D_PAD_GPIO1_IO14__GPIO1_IO14 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
134 };
135 
136 #ifdef CONFIG_FEC_MXC
137 static iomux_v3_cfg_t const fec1_pads[] = {
138 	MX7D_PAD_SD2_CD_B__ENET1_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL_MII),
139 	MX7D_PAD_SD2_WP__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL_MII),
140 	MX7D_PAD_ENET1_RGMII_TXC__ENET1_RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
141 	MX7D_PAD_ENET1_RGMII_TD0__ENET1_RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
142 	MX7D_PAD_ENET1_RGMII_TD1__ENET1_RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
143 	MX7D_PAD_ENET1_RGMII_TD2__ENET1_RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
144 	MX7D_PAD_ENET1_RGMII_TD3__ENET1_RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
145 	MX7D_PAD_ENET1_RGMII_TX_CTL__ENET1_RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
146 	MX7D_PAD_ENET1_RGMII_RXC__ENET1_RGMII_RXC | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
147 	MX7D_PAD_ENET1_RGMII_RD0__ENET1_RGMII_RD0 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
148 	MX7D_PAD_ENET1_RGMII_RD1__ENET1_RGMII_RD1 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
149 	MX7D_PAD_ENET1_RGMII_RD2__ENET1_RGMII_RD2 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
150 	MX7D_PAD_ENET1_RGMII_RD3__ENET1_RGMII_RD3 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
151 	MX7D_PAD_ENET1_RGMII_RX_CTL__ENET1_RGMII_RX_CTL | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
152 	MX7D_PAD_SD3_STROBE__GPIO6_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
153 	MX7D_PAD_SD3_RESET_B__GPIO6_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
154 };
155 
156 #define FEC1_RST_GPIO	IMX_GPIO_NR(6, 11)
157 
158 static void setup_iomux_fec(void)
159 {
160 	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
161 
162 	gpio_direction_output(FEC1_RST_GPIO, 0);
163 	udelay(500);
164 	gpio_set_value(FEC1_RST_GPIO, 1);
165 }
166 
167 int board_eth_init(bd_t *bis)
168 {
169 	setup_iomux_fec();
170 
171 	return fecmxc_initialize_multi(bis, 0,
172 		CONFIG_FEC_MXC_PHYADDR, IMX_FEC_BASE);
173 }
174 
175 static int setup_fec(void)
176 {
177 	struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs
178 		= (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
179 
180 	/* Use 125M anatop REF_CLK1 for ENET1, clear gpr1[13], gpr1[17] */
181 	clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
182 			(IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK |
183 			IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK), 0);
184 
185 	return set_clk_enet(ENET_125MHz);
186 }
187 
188 int board_phy_config(struct phy_device *phydev)
189 {
190 	unsigned short val;
191 
192 	/* To enable AR8035 ouput a 125MHz clk from CLK_25M */
193 	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
194 	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
195 	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
196 
197 	val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
198 	val &= 0xffe7;
199 	val |= 0x18;
200 	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
201 
202 	/* introduce tx clock delay */
203 	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
204 	val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
205 	val |= 0x0100;
206 	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
207 
208 	if (phydev->drv->config)
209 		phydev->drv->config(phydev);
210 
211 	return 0;
212 }
213 #endif
214 
215 static void setup_iomux_uart(void)
216 {
217 	imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads));
218 }
219 
220 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
221 	{USDHC3_BASE_ADDR},
222 };
223 
224 int board_mmc_getcd(struct mmc *mmc)
225 {
226 	/* Assume uSDHC3 emmc is always present */
227 	return 1;
228 }
229 
230 int board_mmc_init(bd_t *bis)
231 {
232 	imx_iomux_v3_setup_multiple_pads(
233 			usdhc3_emmc_pads, ARRAY_SIZE(usdhc3_emmc_pads));
234 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
235 
236 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
237 }
238 
239 int board_early_init_f(void)
240 {
241 	setup_iomux_uart();
242 
243 #ifdef CONFIG_SYS_I2C_MXC
244 	setup_i2c(3, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info4);
245 #endif
246 
247 	return 0;
248 }
249 
250 int board_init(void)
251 {
252 	/* address of boot parameters */
253 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
254 
255 #ifdef CONFIG_FEC_MXC
256 	setup_fec();
257 #endif
258 
259 	return 0;
260 }
261 
262 int board_late_init(void)
263 {
264 	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
265 
266 	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
267 
268 	set_wdog_reset(wdog);
269 
270 	/*
271 	 * Do not assert internal WDOG_RESET_B_DEB(controlled by bit 4),
272 	 * since we use PMIC_PWRON to reset the board.
273 	 */
274 	clrsetbits_le16(&wdog->wcr, 0, 0x10);
275 
276 	return 0;
277 }
278 
279 int checkboard(void)
280 {
281 	puts("Board: i.MX7D PICOSOM\n");
282 
283 	return 0;
284 }
285 
286 int board_usb_phy_mode(int port)
287 {
288 	return USB_INIT_DEVICE;
289 }
290