1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2015 Technexion Ltd.
4  *
5  * Author: Richard Hu <richard.hu@technexion.com>
6  */
7 
8 #include <asm/arch/clock.h>
9 #include <asm/arch/iomux.h>
10 #include <asm/arch/imx-regs.h>
11 #include <asm/arch/crm_regs.h>
12 #include <asm/arch/mx6-pins.h>
13 #include <asm/arch/sys_proto.h>
14 #include <asm/gpio.h>
15 #include <asm/mach-imx/iomux-v3.h>
16 #include <asm/io.h>
17 #include <common.h>
18 #include <miiphy.h>
19 #include <netdev.h>
20 #include <linux/sizes.h>
21 #include <usb.h>
22 #include <power/pmic.h>
23 #include <power/pfuze3000_pmic.h>
24 #include "../../freescale/common/pfuze.h"
25 
26 DECLARE_GLOBAL_DATA_PTR;
27 
28 #define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |		\
29 	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |		\
30 	PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
31 
32 #define OTG_ID_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |		\
33 	PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW |		\
34 	PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
35 
36 #define MDIO_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE |     \
37 	PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST | PAD_CTL_ODE)
38 
39 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE |     \
40 	PAD_CTL_SPEED_HIGH   |                                   \
41 	PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST)
42 
43 #define ENET_CLK_PAD_CTRL  (PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST)
44 
45 #define RMII_PHY_RESET IMX_GPIO_NR(1, 28)
46 
47 static iomux_v3_cfg_t const fec_pads[] = {
48 	MX6_PAD_ENET1_TX_EN__ENET2_MDC		| MUX_PAD_CTRL(MDIO_PAD_CTRL),
49 	MX6_PAD_ENET1_TX_DATA1__ENET2_MDIO	| MUX_PAD_CTRL(MDIO_PAD_CTRL),
50 	MX6_PAD_ENET2_TX_DATA0__ENET2_TDATA00	| MUX_PAD_CTRL(ENET_PAD_CTRL),
51 	MX6_PAD_ENET2_TX_DATA1__ENET2_TDATA01	| MUX_PAD_CTRL(ENET_PAD_CTRL),
52 	MX6_PAD_ENET2_TX_CLK__ENET2_REF_CLK2	| MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
53 	MX6_PAD_ENET2_TX_EN__ENET2_TX_EN	| MUX_PAD_CTRL(ENET_PAD_CTRL),
54 	MX6_PAD_ENET2_RX_DATA0__ENET2_RDATA00	| MUX_PAD_CTRL(ENET_PAD_CTRL),
55 	MX6_PAD_ENET2_RX_DATA1__ENET2_RDATA01	| MUX_PAD_CTRL(ENET_PAD_CTRL),
56 	MX6_PAD_ENET2_RX_EN__ENET2_RX_EN	| MUX_PAD_CTRL(ENET_PAD_CTRL),
57 	MX6_PAD_ENET2_RX_ER__ENET2_RX_ER	| MUX_PAD_CTRL(ENET_PAD_CTRL),
58 	MX6_PAD_UART4_TX_DATA__GPIO1_IO28	| MUX_PAD_CTRL(NO_PAD_CTRL),
59 };
60 
61 static void setup_iomux_fec(void)
62 {
63 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
64 }
65 
66 int board_eth_init(bd_t *bis)
67 {
68 	setup_iomux_fec();
69 
70 	gpio_request(RMII_PHY_RESET, "enet_phy_reset");
71 	gpio_direction_output(RMII_PHY_RESET, 0);
72 	/*
73 	 * According to KSZ8081MNX-RNB manual:
74 	 * For warm reset, the reset (RST#) pin should be asserted low for a
75 	 * minimum of 500μs.  The strap-in pin values are read and updated
76 	 * at the de-assertion of reset.
77 	 */
78 	udelay(500);
79 
80 	gpio_direction_output(RMII_PHY_RESET, 1);
81 	/*
82 	 * According to KSZ8081MNX-RNB manual:
83 	 * After the de-assertion of reset, wait a minimum of 100μs before
84 	 * starting programming on the MIIM (MDC/MDIO) interface.
85 	 */
86 	udelay(100);
87 
88 	return fecmxc_initialize(bis);
89 }
90 
91 static int setup_fec(void)
92 {
93 	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
94 	int ret;
95 
96 	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
97 			IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
98 
99 	ret = enable_fec_anatop_clock(1, ENET_50MHZ);
100 	if (ret)
101 		return ret;
102 
103 	enable_enet_clk(1);
104 
105 	return 0;
106 }
107 
108 int board_phy_config(struct phy_device *phydev)
109 {
110 	phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
111 
112 	if (phydev->drv->config)
113 		phydev->drv->config(phydev);
114 
115 	return 0;
116 }
117 
118 int dram_init(void)
119 {
120 	gd->ram_size = imx_ddr_size();
121 
122 	return 0;
123 }
124 
125 static iomux_v3_cfg_t const uart6_pads[] = {
126 	MX6_PAD_CSI_MCLK__UART6_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
127 	MX6_PAD_CSI_PIXCLK__UART6_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
128 };
129 
130 #define USB_OTHERREGS_OFFSET	0x800
131 #define UCTRL_PWR_POL		(1 << 9)
132 
133 static iomux_v3_cfg_t const usb_otg_pad[] = {
134 	MX6_PAD_GPIO1_IO00__ANATOP_OTG1_ID | MUX_PAD_CTRL(OTG_ID_PAD_CTRL),
135 };
136 
137 static void setup_iomux_uart(void)
138 {
139 	imx_iomux_v3_setup_multiple_pads(uart6_pads, ARRAY_SIZE(uart6_pads));
140 }
141 
142 static void setup_usb(void)
143 {
144 	imx_iomux_v3_setup_multiple_pads(usb_otg_pad, ARRAY_SIZE(usb_otg_pad));
145 }
146 
147 int board_early_init_f(void)
148 {
149 	setup_iomux_uart();
150 
151 	return 0;
152 }
153 
154 #ifdef CONFIG_DM_PMIC
155 int power_init_board(void)
156 {
157 	struct udevice *dev;
158 	int ret, dev_id, rev_id;
159 
160 	ret = pmic_get("pfuze3000", &dev);
161 	if (ret == -ENODEV)
162 		return 0;
163 	if (ret != 0)
164 		return ret;
165 
166 	dev_id = pmic_reg_read(dev, PFUZE3000_DEVICEID);
167 	rev_id = pmic_reg_read(dev, PFUZE3000_REVID);
168 	printf("PMIC: PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", dev_id, rev_id);
169 
170 	/* disable Low Power Mode during standby mode */
171 	pmic_reg_write(dev, PFUZE3000_LDOGCTL, 0x1);
172 
173 	/* SW1B step ramp up time from 2us to 4us/25mV */
174 	pmic_reg_write(dev, PFUZE3000_SW1BCONF, 0x40);
175 
176 	/* SW1B mode to APS/PFM */
177 	pmic_reg_write(dev, PFUZE3000_SW1BMODE, 0xc);
178 
179 	/* SW1B standby voltage set to 0.975V */
180 	pmic_reg_write(dev, PFUZE3000_SW1BSTBY, 0xb);
181 
182 	return 0;
183 }
184 #endif
185 
186 int board_usb_phy_mode(int port)
187 {
188 	if (port == 1)
189 		return USB_INIT_HOST;
190 	else
191 		return USB_INIT_DEVICE;
192 }
193 
194 int board_ehci_hcd_init(int port)
195 {
196 	u32 *usbnc_usb_ctrl;
197 
198 	if (port > 1)
199 		return -EINVAL;
200 
201 	usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
202 				 port * 4);
203 
204 	/* Set Power polarity */
205 	setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);
206 
207 	return 0;
208 }
209 
210 int board_init(void)
211 {
212 	/* Address of boot parameters */
213 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
214 
215 	setup_fec();
216 	setup_usb();
217 
218 	return 0;
219 }
220 
221 int checkboard(void)
222 {
223 	puts("Board: PICO-IMX6UL-EMMC\n");
224 
225 	return 0;
226 }
227