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f19eb154 VK |
1 | /* |
2 | * Copyright (C) 2009 | |
3 | * Marek Vasut <marek.vasut@gmail.com> | |
4 | * | |
5 | * Heavily based on pxa255_idp platform | |
6 | * | |
7 | * SPDX-License-Identifier: GPL-2.0+ | |
8 | */ | |
9 | ||
10 | #include <common.h> | |
11 | #include <command.h> | |
12 | #include <serial.h> | |
13 | #include <asm/arch/hardware.h> | |
14 | #include <asm/arch/pxa.h> | |
15 | #include <asm/arch/regs-mmc.h> | |
16 | #include <spi.h> | |
17 | #include <asm/io.h> | |
18 | ||
19 | DECLARE_GLOBAL_DATA_PTR; | |
20 | ||
21 | #ifdef CONFIG_CMD_SPI | |
22 | void lcd_start(void); | |
23 | #else | |
24 | inline void lcd_start(void) {}; | |
25 | #endif | |
26 | ||
27 | /* | |
28 | * Miscelaneous platform dependent initialisations | |
29 | */ | |
30 | int board_init(void) | |
31 | { | |
32 | /* We have RAM, disable cache */ | |
33 | dcache_disable(); | |
34 | icache_disable(); | |
35 | ||
36 | /* arch number of Z2 */ | |
37 | gd->bd->bi_arch_number = MACH_TYPE_ZIPIT2; | |
38 | ||
39 | /* adress of boot parameters */ | |
40 | gd->bd->bi_boot_params = 0xa0000100; | |
41 | ||
42 | /* Enable LCD */ | |
43 | lcd_start(); | |
44 | ||
45 | return 0; | |
46 | } | |
47 | ||
48 | int dram_init(void) | |
49 | { | |
50 | pxa2xx_dram_init(); | |
51 | gd->ram_size = PHYS_SDRAM_1_SIZE; | |
52 | return 0; | |
53 | } | |
54 | ||
55 | void dram_init_banksize(void) | |
56 | { | |
57 | gd->bd->bi_dram[0].start = PHYS_SDRAM_1; | |
58 | gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; | |
59 | } | |
60 | ||
61 | #ifdef CONFIG_CMD_MMC | |
62 | int board_mmc_init(bd_t *bis) | |
63 | { | |
64 | pxa_mmc_register(0); | |
65 | return 0; | |
66 | } | |
67 | #endif | |
68 | ||
69 | #ifdef CONFIG_CMD_SPI | |
70 | ||
71 | struct { | |
72 | unsigned char reg; | |
73 | unsigned short data; | |
74 | unsigned char mdelay; | |
75 | } lcd_data[] = { | |
76 | { 0x07, 0x0000, 0 }, | |
77 | { 0x13, 0x0000, 10 }, | |
78 | { 0x11, 0x3004, 0 }, | |
79 | { 0x14, 0x200F, 0 }, | |
80 | { 0x10, 0x1a20, 0 }, | |
81 | { 0x13, 0x0040, 50 }, | |
82 | { 0x13, 0x0060, 0 }, | |
83 | { 0x13, 0x0070, 200 }, | |
84 | { 0x01, 0x0127, 0 }, | |
85 | { 0x02, 0x0700, 0 }, | |
86 | { 0x03, 0x1030, 0 }, | |
87 | { 0x08, 0x0208, 0 }, | |
88 | { 0x0B, 0x0620, 0 }, | |
89 | { 0x0C, 0x0110, 0 }, | |
90 | { 0x30, 0x0120, 0 }, | |
91 | { 0x31, 0x0127, 0 }, | |
92 | { 0x32, 0x0000, 0 }, | |
93 | { 0x33, 0x0503, 0 }, | |
94 | { 0x34, 0x0727, 0 }, | |
95 | { 0x35, 0x0124, 0 }, | |
96 | { 0x36, 0x0706, 0 }, | |
97 | { 0x37, 0x0701, 0 }, | |
98 | { 0x38, 0x0F00, 0 }, | |
99 | { 0x39, 0x0F00, 0 }, | |
100 | { 0x40, 0x0000, 0 }, | |
101 | { 0x41, 0x0000, 0 }, | |
102 | { 0x42, 0x013f, 0 }, | |
103 | { 0x43, 0x0000, 0 }, | |
104 | { 0x44, 0x013f, 0 }, | |
105 | { 0x45, 0x0000, 0 }, | |
106 | { 0x46, 0xef00, 0 }, | |
107 | { 0x47, 0x013f, 0 }, | |
108 | { 0x48, 0x0000, 0 }, | |
109 | { 0x07, 0x0015, 30 }, | |
110 | { 0x07, 0x0017, 0 }, | |
111 | { 0x20, 0x0000, 0 }, | |
112 | { 0x21, 0x0000, 0 }, | |
113 | { 0x22, 0x0000, 0 }, | |
114 | }; | |
115 | ||
116 | void zipitz2_spi_sda(int set) | |
117 | { | |
118 | /* GPIO 13 */ | |
119 | if (set) | |
120 | writel((1 << 13), GPSR0); | |
121 | else | |
122 | writel((1 << 13), GPCR0); | |
123 | } | |
124 | ||
125 | void zipitz2_spi_scl(int set) | |
126 | { | |
127 | /* GPIO 22 */ | |
128 | if (set) | |
129 | writel((1 << 22), GPCR0); | |
130 | else | |
131 | writel((1 << 22), GPSR0); | |
132 | } | |
133 | ||
134 | unsigned char zipitz2_spi_read(void) | |
135 | { | |
136 | /* GPIO 40 */ | |
137 | return !!(readl(GPLR1) & (1 << 8)); | |
138 | } | |
139 | ||
140 | int spi_cs_is_valid(unsigned int bus, unsigned int cs) | |
141 | { | |
142 | /* Always valid */ | |
143 | return 1; | |
144 | } | |
145 | ||
146 | void spi_cs_activate(struct spi_slave *slave) | |
147 | { | |
148 | /* GPIO 88 low */ | |
149 | writel((1 << 24), GPCR2); | |
150 | } | |
151 | ||
152 | void spi_cs_deactivate(struct spi_slave *slave) | |
153 | { | |
154 | /* GPIO 88 high */ | |
155 | writel((1 << 24), GPSR2); | |
156 | } | |
157 | ||
158 | void lcd_start(void) | |
159 | { | |
160 | int i; | |
161 | unsigned char reg[3] = { 0x74, 0x00, 0 }; | |
162 | unsigned char data[3] = { 0x76, 0, 0 }; | |
163 | unsigned char dummy[3] = { 0, 0, 0 }; | |
164 | ||
165 | /* PWM2 AF */ | |
166 | writel(readl(GAFR0_L) | 0x00800000, GAFR0_L); | |
167 | /* Enable clock to all PWM */ | |
168 | writel(readl(CKEN) | 0x3, CKEN); | |
169 | /* Configure PWM2 */ | |
170 | writel(0x4f, PWM_CTRL2); | |
171 | writel(0x2ff, PWM_PWDUTY2); | |
172 | writel(792, PWM_PERVAL2); | |
173 | ||
174 | /* Toggle the reset pin to reset the LCD */ | |
175 | writel((1 << 19), GPSR0); | |
176 | udelay(100000); | |
177 | writel((1 << 19), GPCR0); | |
178 | udelay(20000); | |
179 | writel((1 << 19), GPSR0); | |
180 | udelay(20000); | |
181 | ||
182 | /* Program the LCD init sequence */ | |
183 | for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) { | |
184 | reg[0] = 0x74; | |
185 | reg[1] = 0x0; | |
186 | reg[2] = lcd_data[i].reg; | |
187 | spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END); | |
188 | ||
189 | data[0] = 0x76; | |
190 | data[1] = lcd_data[i].data >> 8; | |
191 | data[2] = lcd_data[i].data & 0xff; | |
192 | spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END); | |
193 | ||
194 | if (lcd_data[i].mdelay) | |
195 | udelay(lcd_data[i].mdelay * 1000); | |
196 | } | |
197 | ||
198 | writel((1 << 11), GPSR0); | |
199 | } | |
200 | #endif |