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[u-boot] / board / samsung / common / exynos5-dt.c
1 /*
2  * Copyright (C) 2012 Samsung Electronics
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <dwc3-uboot.h>
10 #include <fdtdec.h>
11 #include <asm/io.h>
12 #include <errno.h>
13 #include <i2c.h>
14 #include <mmc.h>
15 #include <netdev.h>
16 #include <samsung-usb-phy-uboot.h>
17 #include <spi.h>
18 #include <usb.h>
19 #include <video_bridge.h>
20 #include <asm/gpio.h>
21 #include <asm/arch/cpu.h>
22 #include <asm/arch/dwmmc.h>
23 #include <asm/arch/mmc.h>
24 #include <asm/arch/pinmux.h>
25 #include <asm/arch/power.h>
26 #include <asm/arch/sromc.h>
27 #include <power/pmic.h>
28 #include <power/max77686_pmic.h>
29 #include <power/regulator.h>
30 #include <power/s2mps11.h>
31 #include <power/s5m8767.h>
32 #include <samsung/exynos5-dt-types.h>
33 #include <samsung/misc.h>
34 #include <tmu.h>
35
36 DECLARE_GLOBAL_DATA_PTR;
37
38 static void board_enable_audio_codec(void)
39 {
40         int node, ret;
41         struct gpio_desc en_gpio;
42
43         node = fdtdec_next_compatible(gd->fdt_blob, 0,
44                 COMPAT_SAMSUNG_EXYNOS5_SOUND);
45         if (node <= 0)
46                 return;
47
48         ret = gpio_request_by_name_nodev(gd->fdt_blob, node,
49                                          "codec-enable-gpio", 0, &en_gpio,
50                                          GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
51         if (ret == -FDT_ERR_NOTFOUND)
52                 return;
53
54         /* Turn on the GPIO which connects to the codec's "enable" line. */
55         gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
56
57 #ifdef CONFIG_SOUND_MAX98095
58         /* Enable MAX98095 Codec */
59         gpio_request(EXYNOS5_GPIO_X17, "max98095_enable");
60         gpio_direction_output(EXYNOS5_GPIO_X17, 1);
61         gpio_set_pull(EXYNOS5_GPIO_X17, S5P_GPIO_PULL_NONE);
62 #endif
63 }
64
65 int exynos_init(void)
66 {
67         board_enable_audio_codec();
68
69         return 0;
70 }
71
72 static int exynos_set_regulator(const char *name, uint uv)
73 {
74         struct udevice *dev;
75         int ret;
76
77         ret = regulator_get_by_platname(name, &dev);
78         if (ret) {
79                 debug("%s: Cannot find regulator %s\n", __func__, name);
80                 return ret;
81         }
82         ret = regulator_set_value(dev, uv);
83         if (ret) {
84                 debug("%s: Cannot set regulator %s\n", __func__, name);
85                 return ret;
86         }
87
88         return 0;
89 }
90
91 int exynos_power_init(void)
92 {
93         struct udevice *dev;
94         int ret;
95
96         ret = pmic_get("max77686", &dev);
97         if (!ret) {
98                 /* TODO(sjg@chromium.org): Move into the clock/pmic API */
99                 ret = pmic_clrsetbits(dev, MAX77686_REG_PMIC_32KHZ, 0,
100                                 MAX77686_32KHCP_EN);
101                 if (ret)
102                         return ret;
103                 ret = pmic_clrsetbits(dev, MAX77686_REG_PMIC_BBAT, 0,
104                                 MAX77686_BBCHOSTEN | MAX77686_BBCVS_3_5V);
105                 if (ret)
106                         return ret;
107         } else {
108                 ret = pmic_get("s5m8767-pmic", &dev);
109                 /* TODO(sjg@chromium.org): Use driver model to access clock */
110 #ifdef CONFIG_PMIC_S5M8767
111                 if (!ret)
112                         s5m8767_enable_32khz_cp(dev);
113 #endif
114         }
115         if (ret == -ENODEV)
116                 return 0;
117
118         ret = regulators_enable_boot_on(false);
119         if (ret)
120                 return ret;
121
122         ret = exynos_set_regulator("vdd_mif", 1100000);
123         if (ret)
124                 return ret;
125
126         /*
127          * This would normally be 1.3V, but since we are running slowly 1.1V
128          * is enough. For spring it helps reduce CPU temperature and avoid
129          * hangs with the case open. 1.1V is minimum voltage borderline for
130          * chained bootloaders.
131          */
132         ret = exynos_set_regulator("vdd_arm", 1100000);
133         if (ret)
134                 return ret;
135         ret = exynos_set_regulator("vdd_int", 1012500);
136         if (ret)
137                 return ret;
138         ret = exynos_set_regulator("vdd_g3d", 1200000);
139         if (ret)
140                 return ret;
141
142         return 0;
143 }
144
145 int board_get_revision(void)
146 {
147         return 0;
148 }
149
150 #ifdef CONFIG_USB_DWC3
151 static struct dwc3_device dwc3_device_data = {
152         .maximum_speed = USB_SPEED_SUPER,
153         .base = 0x12400000,
154         .dr_mode = USB_DR_MODE_PERIPHERAL,
155         .index = 0,
156 };
157
158 int usb_gadget_handle_interrupts(void)
159 {
160         dwc3_uboot_handle_interrupt(0);
161         return 0;
162 }
163
164 int board_usb_init(int index, enum usb_init_type init)
165 {
166         struct exynos_usb3_phy *phy = (struct exynos_usb3_phy *)
167                 samsung_get_base_usb3_phy();
168
169         if (!phy) {
170                 error("usb3 phy not supported");
171                 return -ENODEV;
172         }
173
174         set_usbdrd_phy_ctrl(POWER_USB_DRD_PHY_CTRL_EN);
175         exynos5_usb3_phy_init(phy);
176
177         return dwc3_uboot_init(&dwc3_device_data);
178 }
179 #endif
180 #ifdef CONFIG_SET_DFU_ALT_INFO
181 char *get_dfu_alt_system(char *interface, char *devstr)
182 {
183         char *info = "Not supported!";
184
185         if (board_is_odroidxu4())
186                 return info;
187
188         return getenv("dfu_alt_system");
189 }
190
191 char *get_dfu_alt_boot(char *interface, char *devstr)
192 {
193         char *info = "Not supported!";
194         struct mmc *mmc;
195         char *alt_boot;
196         int dev_num;
197
198         if (board_is_odroidxu4())
199                 return info;
200
201         dev_num = simple_strtoul(devstr, NULL, 10);
202
203         mmc = find_mmc_device(dev_num);
204         if (!mmc)
205                 return NULL;
206
207         if (mmc_init(mmc))
208                 return NULL;
209
210         if (IS_SD(mmc))
211                 alt_boot = CONFIG_DFU_ALT_BOOT_SD;
212         else
213                 alt_boot = CONFIG_DFU_ALT_BOOT_EMMC;
214
215         return alt_boot;
216 }
217 #endif