1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2012, Stefano Babic <sbabic@denx.de>
4 *
5 * Based on flea3.c and mx35pdk.c
6 */
7
8 #include <common.h>
9 #include <asm/io.h>
10 #include <linux/errno.h>
11 #include <asm/arch/imx-regs.h>
12 #include <asm/arch/crm_regs.h>
13 #include <asm/arch/clock.h>
14 #include <asm/arch/iomux-mx35.h>
15 #include <i2c.h>
16 #include <power/pmic.h>
17 #include <fsl_pmic.h>
18 #include <mc13892.h>
19 #include <mmc.h>
20 #include <fsl_esdhc_imx.h>
21 #include <linux/types.h>
22 #include <asm/gpio.h>
23 #include <asm/arch/sys_proto.h>
24 #include <netdev.h>
25 #include <spl.h>
26
27 #define CCM_CCMR_CONFIG 0x003F4208
28
29 #define ESDCTL_DDR2_CONFIG 0x007FFC3F
30
31 /* For MMC */
32 #define GPIO_MMC_CD 7
33 #define GPIO_MMC_WP 8
34
35 DECLARE_GLOBAL_DATA_PTR;
36
dram_init(void)37 int dram_init(void)
38 {
39 gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
40 PHYS_SDRAM_1_SIZE);
41
42 return 0;
43 }
44
board_setup_sdram(void)45 static void board_setup_sdram(void)
46 {
47 struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
48
49 /* Initialize with default values both CSD0/1 */
50 writel(0x2000, &esdc->esdctl0);
51 writel(0x2000, &esdc->esdctl1);
52
53 mx3_setup_sdram_bank(CSD0_BASE_ADDR, ESDCTL_DDR2_CONFIG,
54 13, 10, 2, 0x8080);
55 }
56
setup_iomux_fec(void)57 static void setup_iomux_fec(void)
58 {
59 static const iomux_v3_cfg_t fec_pads[] = {
60 MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
61 MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
62 MX35_PAD_FEC_RX_DV__FEC_RX_DV,
63 MX35_PAD_FEC_COL__FEC_COL,
64 MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
65 MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
66 MX35_PAD_FEC_TX_EN__FEC_TX_EN,
67 MX35_PAD_FEC_MDC__FEC_MDC,
68 MX35_PAD_FEC_MDIO__FEC_MDIO,
69 MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
70 MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
71 MX35_PAD_FEC_CRS__FEC_CRS,
72 MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
73 MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
74 MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
75 MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
76 MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
77 MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
78 };
79
80 /* setup pins for FEC */
81 imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
82 }
83
woodburn_init(void)84 int woodburn_init(void)
85 {
86 struct ccm_regs *ccm =
87 (struct ccm_regs *)IMX_CCM_BASE;
88
89 /* initialize PLL and clock configuration */
90 writel(CCM_CCMR_CONFIG, &ccm->ccmr);
91
92 /* Set-up RAM */
93 board_setup_sdram();
94
95 /* enable clocks */
96 writel(readl(&ccm->cgr0) |
97 MXC_CCM_CGR0_EMI_MASK |
98 MXC_CCM_CGR0_EDIO_MASK |
99 MXC_CCM_CGR0_EPIT1_MASK,
100 &ccm->cgr0);
101
102 writel(readl(&ccm->cgr1) |
103 MXC_CCM_CGR1_FEC_MASK |
104 MXC_CCM_CGR1_GPIO1_MASK |
105 MXC_CCM_CGR1_GPIO2_MASK |
106 MXC_CCM_CGR1_GPIO3_MASK |
107 MXC_CCM_CGR1_I2C1_MASK |
108 MXC_CCM_CGR1_I2C2_MASK |
109 MXC_CCM_CGR1_I2C3_MASK,
110 &ccm->cgr1);
111
112 /* Set-up NAND */
113 __raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
114
115 /* Set pinmux for the required peripherals */
116 setup_iomux_fec();
117
118 /* setup GPIO1_4 FEC_ENABLE signal */
119 imx_iomux_v3_setup_pad(MX35_PAD_SCKR__GPIO1_4);
120 gpio_direction_output(4, 1);
121 imx_iomux_v3_setup_pad(MX35_PAD_HCKT__GPIO1_9);
122 gpio_direction_output(9, 1);
123
124 return 0;
125 }
126
127 #if defined(CONFIG_SPL_BUILD)
board_init_f(ulong dummy)128 void board_init_f(ulong dummy)
129 {
130 /* Set the stack pointer. */
131 asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK));
132
133 /* Initialize MUX and SDRAM */
134 woodburn_init();
135
136 /* Clear the BSS. */
137 memset(__bss_start, 0, __bss_end - __bss_start);
138
139 preloader_console_init();
140 timer_init();
141
142 board_init_r(NULL, 0);
143 }
144
spl_board_init(void)145 void spl_board_init(void)
146 {
147 }
148
149 #endif
150
151
152 /* Booting from NOR in external mode */
board_early_init_f(void)153 int board_early_init_f(void)
154 {
155 return woodburn_init();
156 }
157
158
board_init(void)159 int board_init(void)
160 {
161 struct pmic *p;
162 u32 val;
163 int ret;
164
165 /* address of boot parameters */
166 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
167
168 ret = pmic_init(I2C_PMIC);
169 if (ret)
170 return ret;
171
172 p = pmic_get("FSL_PMIC");
173
174 /*
175 * Set switchers in Auto in NORMAL mode & STANDBY mode
176 * Setup the switcher mode for SW1 & SW2
177 */
178 pmic_reg_read(p, REG_SW_4, &val);
179 val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
180 (SWMODE_MASK << SWMODE2_SHIFT)));
181 val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
182 (SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
183 /* Set SWILIMB */
184 val |= (1 << 22);
185 pmic_reg_write(p, REG_SW_4, val);
186
187 /* Setup the switcher mode for SW3 & SW4 */
188 pmic_reg_read(p, REG_SW_5, &val);
189 val &= ~((SWMODE_MASK << SWMODE4_SHIFT) |
190 (SWMODE_MASK << SWMODE3_SHIFT));
191 val |= (SWMODE_AUTO_AUTO << SWMODE4_SHIFT) |
192 (SWMODE_AUTO_AUTO << SWMODE3_SHIFT);
193 pmic_reg_write(p, REG_SW_5, val);
194
195 /* Set VGEN1 to 3.15V */
196 pmic_reg_read(p, REG_SETTING_0, &val);
197 val &= ~(VGEN1_MASK);
198 val |= VGEN1_3_15;
199 pmic_reg_write(p, REG_SETTING_0, val);
200
201 pmic_reg_read(p, REG_MODE_0, &val);
202 val |= VGEN1EN;
203 pmic_reg_write(p, REG_MODE_0, val);
204 udelay(2000);
205
206 return 0;
207 }
208
209 #if defined(CONFIG_FSL_ESDHC_IMX)
210 struct fsl_esdhc_cfg esdhc_cfg = {MMC_SDHC1_BASE_ADDR};
211
board_mmc_init(bd_t * bis)212 int board_mmc_init(bd_t *bis)
213 {
214 static const iomux_v3_cfg_t sdhc1_pads[] = {
215 MX35_PAD_SD1_CMD__ESDHC1_CMD,
216 MX35_PAD_SD1_CLK__ESDHC1_CLK,
217 MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
218 MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
219 MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
220 MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
221 };
222
223 /* configure pins for SDHC1 only */
224 imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
225
226 /* MMC Card Detect on GPIO1_7 */
227 imx_iomux_v3_setup_pad(MX35_PAD_SCKT__GPIO1_7);
228 gpio_direction_input(GPIO_MMC_CD);
229
230 /* MMC Write Protection on GPIO1_8 */
231 imx_iomux_v3_setup_pad(MX35_PAD_FST__GPIO1_8);
232 gpio_direction_input(GPIO_MMC_WP);
233
234 esdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK);
235
236 return fsl_esdhc_initialize(bis, &esdhc_cfg);
237 }
238
board_mmc_getcd(struct mmc * mmc)239 int board_mmc_getcd(struct mmc *mmc)
240 {
241 return !gpio_get_value(GPIO_MMC_CD);
242 }
243 #endif
244
get_board_rev(void)245 u32 get_board_rev(void)
246 {
247 int rev = 0;
248
249 return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
250 }
251