1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2018-2019 Toradex AG
4 */
5 #include <common.h>
6 #include <init.h>
7 #include <asm/global_data.h>
8 #include <linux/delay.h>
9
10 #include <asm/arch/clock.h>
11 #include <asm/arch/crm_regs.h>
12 #include <asm/arch/imx-regs.h>
13 #include <asm/arch-mx6/clock.h>
14 #include <asm/arch-mx6/imx-regs.h>
15 #include <asm/arch-mx6/mx6ull_pins.h>
16 #include <asm/arch/sys_proto.h>
17 #include <asm/gpio.h>
18 #include <asm/mach-imx/boot_mode.h>
19 #include <asm/mach-imx/iomux-v3.h>
20 #include <asm/io.h>
21 #include <dm.h>
22 #include <dm/platform_data/serial_mxc.h>
23 #include <env.h>
24 #include <fdt_support.h>
25 #include <imx_thermal.h>
26 #include <jffs2/load_kernel.h>
27 #include <linux/sizes.h>
28 #include <miiphy.h>
29 #include <mtd_node.h>
30 #include <netdev.h>
31
32 #include "../common/tdx-common.h"
33 #include "../common/tdx-cfg-block.h"
34
35 DECLARE_GLOBAL_DATA_PTR;
36
37 #define LCD_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
38 PAD_CTL_DSE_48ohm)
39
40 #define MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR 0x2290040
41
42 #define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
43
44 #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP)
45
dram_init(void)46 int dram_init(void)
47 {
48 gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
49
50 return 0;
51 }
52
53 #ifdef CONFIG_NAND_MXS
setup_gpmi_nand(void)54 static void setup_gpmi_nand(void)
55 {
56 setup_gpmi_io_clk((3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) |
57 (3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET));
58 }
59 #endif /* CONFIG_NAND_MXS */
60
61 #ifdef CONFIG_DM_VIDEO
62 static iomux_v3_cfg_t const backlight_pads[] = {
63 /* Backlight On */
64 MX6_PAD_JTAG_TMS__GPIO1_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
65 /* Backlight PWM<A> (multiplexed pin) */
66 MX6_PAD_NAND_WP_B__GPIO4_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
67 };
68
69 #define GPIO_BL_ON IMX_GPIO_NR(1, 11)
70 #define GPIO_PWM_A IMX_GPIO_NR(4, 11)
71
setup_lcd(void)72 static int setup_lcd(void)
73 {
74 imx_iomux_v3_setup_multiple_pads(backlight_pads, ARRAY_SIZE(backlight_pads));
75
76 /* Set BL_ON */
77 gpio_request(GPIO_BL_ON, "BL_ON");
78 gpio_direction_output(GPIO_BL_ON, 1);
79
80 /* Set PWM<A> to full brightness (assuming inversed polarity) */
81 gpio_request(GPIO_PWM_A, "PWM<A>");
82 gpio_direction_output(GPIO_PWM_A, 0);
83
84 return 0;
85 }
86 #endif
87
88 #ifdef CONFIG_FEC_MXC
setup_fec(void)89 static int setup_fec(void)
90 {
91 struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
92 int ret;
93
94 /* provide the PHY clock from the i.MX 6 */
95 ret = enable_fec_anatop_clock(1, ENET_50MHZ);
96 if (ret)
97 return ret;
98
99 /* Use 50M anatop REF_CLK and output it on ENET2_TX_CLK */
100 clrsetbits_le32(&iomuxc_regs->gpr[1],
101 IOMUX_GPR1_FEC2_CLOCK_MUX2_SEL_MASK,
102 IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
103
104 /* give new Ethernet PHY power save mode circuitry time to settle */
105 mdelay(300);
106
107 return 0;
108 }
109
board_phy_config(struct phy_device * phydev)110 int board_phy_config(struct phy_device *phydev)
111 {
112 if (phydev->drv->config)
113 phydev->drv->config(phydev);
114 return 0;
115 }
116 #endif /* CONFIG_FEC_MXC */
117
board_init(void)118 int board_init(void)
119 {
120 /* address of boot parameters */
121 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
122
123 #ifdef CONFIG_FEC_MXC
124 setup_fec();
125 #endif
126
127 #ifdef CONFIG_NAND_MXS
128 setup_gpmi_nand();
129 #endif
130 return 0;
131 }
132
133 #ifdef CONFIG_CMD_BMODE
134 /* TODO */
135 static const struct boot_mode board_boot_modes[] = {
136 /* 4 bit bus width */
137 {"nand", MAKE_CFGVAL(0x40, 0x34, 0x00, 0x00)},
138 {"sd1", MAKE_CFGVAL(0x10, 0x10, 0x00, 0x00)},
139 {NULL, 0},
140 };
141 #endif
142
board_late_init(void)143 int board_late_init(void)
144 {
145 #ifdef CONFIG_TDX_CFG_BLOCK
146 /*
147 * If we have a valid config block and it says we are a module with
148 * Wi-Fi/Bluetooth make sure we use the -wifi device tree.
149 */
150 if (tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT_IT ||
151 tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT)
152 env_set("variant", "-wifi");
153 #endif
154
155 /*
156 * Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the
157 * SOC to request for a lower voltage during sleep. This is necessary
158 * because the voltage is changing too slow for the SOC to wake up
159 * properly.
160 */
161 __raw_writel(0x8080, MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR);
162
163 #ifdef CONFIG_CMD_BMODE
164 add_board_boot_modes(board_boot_modes);
165 #endif
166
167 #ifdef CONFIG_CMD_USB_SDP
168 if (is_boot_from_usb()) {
169 printf("Serial Downloader recovery mode, using sdp command\n");
170 env_set("bootdelay", "0");
171 env_set("bootcmd", "sdp 0");
172 }
173 #endif /* CONFIG_CMD_USB_SDP */
174
175 #if defined(CONFIG_DM_VIDEO)
176 setup_lcd();
177 #endif
178
179 return 0;
180 }
181
checkboard(void)182 int checkboard(void)
183 {
184 printf("Model: Toradex Colibri iMX6ULL\n");
185
186 return 0;
187 }
188
189 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
ft_board_setup(void * blob,struct bd_info * bd)190 int ft_board_setup(void *blob, struct bd_info *bd)
191 {
192 #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
193 static struct node_info nodes[] = {
194 { "fsl,imx6ull-gpmi-nand", MTD_DEV_TYPE_NAND, },
195 { "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, },
196 };
197
198 /* Update partition nodes using info from mtdparts env var */
199 puts(" Updating MTD partitions...\n");
200 fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
201 #endif
202
203 return ft_common_board_setup(blob, bd);
204 }
205 #endif
206
207 static struct mxc_serial_plat mxc_serial_plat = {
208 .reg = (struct mxc_uart *)UART1_BASE,
209 .use_dte = 1,
210 };
211
212 U_BOOT_DRVINFO(mxc_serial) = {
213 .name = "serial_mxc",
214 .plat = &mxc_serial_plat,
215 };
216