2 * Copyright (C) 2010 Samsung Electronics
6 * SPDX-License-Identifier: GPL-2.0+
14 #include <asm/arch/adc.h>
15 #include <asm/arch/pinmux.h>
16 #include <asm/arch/watchdog.h>
18 #include <power/pmic.h>
20 #include <usb/dwc2_udc.h>
21 #include <asm/arch/cpu.h>
22 #include <power/max8998_pmic.h>
24 #include <samsung/misc.h>
25 #include <usb_mass_storage.h>
26 #include <asm/mach-types.h>
28 DECLARE_GLOBAL_DATA_PTR;
30 unsigned int board_rev;
31 static int init_pmic_lcd(void);
33 u32 get_board_rev(void)
38 int exynos_power_init(void)
40 return init_pmic_lcd();
43 static int get_hwrev(void)
45 return board_rev & 0xFF;
48 static unsigned short get_adc_value(int channel)
50 struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
51 unsigned short ret = 0;
53 unsigned int loop = 0;
55 writel(channel & 0xF, &adc->adcmux);
56 writel((1 << 14) | (49 << 6), &adc->adccon);
57 writel(1000 & 0xffff, &adc->adcdly);
58 writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
60 writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
65 reg = readl(&adc->adccon);
66 } while (!(reg & (1 << 15)) && (loop++ < 1000));
68 ret = readl(&adc->adcdat0) & 0xFFF;
73 static int adc_power_control(int on)
79 ret = pmic_get("max8998-pmic", &dev);
81 puts("Failed to get MAX8998!\n");
85 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF1);
91 ret = pmic_reg_write(dev, MAX8998_REG_ONOFF1, reg);
93 puts("MAX8998 LDO setting error\n");
100 static unsigned int get_hw_revision(void)
102 int hwrev, mode0, mode1;
104 adc_power_control(1);
106 mode0 = get_adc_value(1); /* HWREV_MODE0 */
107 mode1 = get_adc_value(2); /* HWREV_MODE1 */
110 * XXX Always set the default hwrev as the latest board
111 * ADC = (voltage) / 3.3 * 4096
115 #define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max))
116 if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
117 hwrev = 0x0; /* 0.01V 0.01V */
118 if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
119 hwrev = 0x1; /* 610mV 0.01V */
120 if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
121 hwrev = 0x2; /* 1.16V 0.01V */
122 if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
123 hwrev = 0x3; /* 1.79V 0.01V */
126 debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
128 adc_power_control(0);
133 static void check_hw_revision(void)
137 hwrev = get_hw_revision();
142 #ifdef CONFIG_USB_GADGET
143 static int s5pc210_phy_control(int on)
149 ret = pmic_get("max8998-pmic", &dev);
151 puts("Failed to get MAX8998!\n");
156 reg = pmic_reg_read(dev, MAX8998_REG_BUCK_ACTIVE_DISCHARGE3);
157 reg |= MAX8998_SAFEOUT1;
158 ret |= pmic_reg_write(dev,
159 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, reg);
161 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF1);
163 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF1, reg);
165 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF2);
167 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF2, reg);
170 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF2);
171 reg &= ~MAX8998_LDO8;
172 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF2, reg);
174 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF1);
175 reg &= ~MAX8998_LDO3;
176 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF1, reg);
178 reg = pmic_reg_read(dev, MAX8998_REG_BUCK_ACTIVE_DISCHARGE3);
179 reg &= ~MAX8998_SAFEOUT1;
180 ret |= pmic_reg_write(dev,
181 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, reg);
185 puts("MAX8998 LDO setting error!\n");
192 struct dwc2_plat_otg_data s5pc210_otg_data = {
193 .phy_control = s5pc210_phy_control,
194 .regs_phy = EXYNOS4_USBPHY_BASE,
195 .regs_otg = EXYNOS4_USBOTG_BASE,
196 .usb_phy_ctrl = EXYNOS4_USBPHY_CONTROL,
197 .usb_flags = PHY0_SLEEP,
201 int board_usb_init(int index, enum usb_init_type init)
203 debug("USB_udc_probe\n");
204 return dwc2_udc_probe(&s5pc210_otg_data);
207 int exynos_early_init_f(void)
214 static int init_pmic_lcd(void)
220 ret = pmic_get("max8998-pmic", &dev);
222 puts("Failed to get MAX8998 for init_pmic_lcd()!\n");
227 val = 0x02; /* (1800 - 1600) / 100; */
228 ret |= pmic_reg_write(dev, MAX8998_REG_LDO7, val);
231 val = 0xe; /* (3000 - 1600) / 100; */
232 ret |= pmic_reg_write(dev, MAX8998_REG_LDO17, val);
234 /* Disable unneeded regulators */
237 * Buck1 ON, Buck2 OFF, Buck3 ON, Buck4 ON
238 * LDO2 ON, LDO3 OFF, LDO4 OFF, LDO5 ON
241 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF1, val);
244 * LDO6 OFF, LDO7 ON, LDO8 OFF, LDO9 ON,
245 * LDO10 OFF, LDO11 OFF, LDO12 OFF, LDO13 OFF
248 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF2, val);
251 * LDO14 OFF, LDO15 OFF, LGO16 OFF, LDO17 OFF
252 * EPWRHOLD OFF, EBATTMON OFF, ELBCNFG2 OFF, ELBCNFG1 OFF
255 ret |= pmic_reg_write(dev, MAX8998_REG_ONOFF3, val);
258 puts("LCD pmic initialisation error!\n");
265 void exynos_cfg_lcd_gpio(void)
267 unsigned int i, f3_end = 4;
269 for (i = 0; i < 8; i++) {
270 /* set GPF0,1,2[0:7] for RGB Interface and Data lines (32bit) */
271 gpio_cfg_pin(EXYNOS4_GPIO_F00 + i, S5P_GPIO_FUNC(2));
272 gpio_cfg_pin(EXYNOS4_GPIO_F10 + i, S5P_GPIO_FUNC(2));
273 gpio_cfg_pin(EXYNOS4_GPIO_F20 + i, S5P_GPIO_FUNC(2));
274 /* pull-up/down disable */
275 gpio_set_pull(EXYNOS4_GPIO_F00 + i, S5P_GPIO_PULL_NONE);
276 gpio_set_pull(EXYNOS4_GPIO_F10 + i, S5P_GPIO_PULL_NONE);
277 gpio_set_pull(EXYNOS4_GPIO_F20 + i, S5P_GPIO_PULL_NONE);
279 /* drive strength to max (24bit) */
280 gpio_set_drv(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_4X);
281 gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW);
282 gpio_set_drv(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_4X);
283 gpio_set_rate(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_SLOW);
284 gpio_set_drv(EXYNOS4_GPIO_F20 + i, S5P_GPIO_DRV_4X);
285 gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW);
288 for (i = EXYNOS4_GPIO_F30; i < (EXYNOS4_GPIO_F30 + f3_end); i++) {
289 /* set GPF3[0:3] for RGB Interface and Data lines (32bit) */
290 gpio_cfg_pin(i, S5P_GPIO_FUNC(2));
291 /* pull-up/down disable */
292 gpio_set_pull(i, S5P_GPIO_PULL_NONE);
293 /* drive strength to max (24bit) */
294 gpio_set_drv(i, S5P_GPIO_DRV_4X);
295 gpio_set_rate(i, S5P_GPIO_DRV_SLOW);
298 /* gpio pad configuration for LCD reset. */
299 gpio_request(EXYNOS4_GPIO_Y45, "lcd_reset");
300 gpio_cfg_pin(EXYNOS4_GPIO_Y45, S5P_GPIO_OUTPUT);
308 void exynos_reset_lcd(void)
310 gpio_set_value(EXYNOS4_GPIO_Y45, 1);
312 gpio_set_value(EXYNOS4_GPIO_Y45, 0);
314 gpio_set_value(EXYNOS4_GPIO_Y45, 1);
318 void exynos_lcd_power_on(void)
324 ret = pmic_get("max8998-pmic", &dev);
326 puts("Failed to get MAX8998!\n");
330 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF3);
331 reg |= MAX8998_LDO17;
332 ret = pmic_reg_write(dev, MAX8998_REG_ONOFF3, reg);
334 puts("MAX8998 LDO setting error\n");
338 reg = pmic_reg_read(dev, MAX8998_REG_ONOFF2);
340 ret = pmic_reg_write(dev, MAX8998_REG_ONOFF2, reg);
342 puts("MAX8998 LDO setting error\n");
347 void exynos_cfg_ldo(void)
352 void exynos_enable_ldo(unsigned int onoff)
354 ld9040_enable_ldo(onoff);
357 int exynos_init(void)
359 gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
361 switch (get_hwrev()) {
364 * Set the low to enable LDO_EN
365 * But when you use the test board for eMMC booting
366 * you should set it HIGH since it removes the inverter
368 /* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
369 gpio_request(EXYNOS4_GPIO_E36, "ldo_en");
370 gpio_direction_output(EXYNOS4_GPIO_E36, 0);
374 * Default reset state is High and there's no inverter
375 * But set it as HIGH to ensure
377 /* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
378 gpio_request(EXYNOS4_GPIO_E13, "massmemory_en");
379 gpio_direction_output(EXYNOS4_GPIO_E13, 1);
384 printf("HW Revision:\t0x%x\n", board_rev);
390 void exynos_lcd_misc_init(vidinfo_t *vid)
393 get_tizen_logo_info(vid);
397 vid->pclk_name = 1; /* MPLL */
400 setenv("lcdinfo", "lcd=ld9040");