summaryrefslogtreecommitdiff
path: root/src/mainboard/google/rush/mainboard.c
blob: 341d373971fc7c4378743aa74475045446ec2eaa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/*
 * This file is part of the coreboot project.
 *
 * Copyright 2014 Google Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <arch/mmu.h>
#include <boot/coreboot_tables.h>
#include <device/device.h>
#include <memrange.h>
#include <soc/addressmap.h>
#include <soc/clk_rst.h>
#include <soc/clock.h>
#include <soc/funitcfg.h>
#include <soc/nvidia/tegra/i2c.h>
#include <soc/nvidia/tegra/usb.h>
#include <soc/padconfig.h>
#include <soc/spi.h>

static const struct pad_config sdmmc3_pad[] = {
	/* MMC3(SDCARD) */
	PAD_CFG_SFIO(SDMMC3_CLK, PINMUX_INPUT_ENABLE, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_CLK_LB_IN, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3),
	PAD_CFG_SFIO(SDMMC3_CLK_LB_OUT, PINMUX_INPUT_ENABLE | PINMUX_PULL_DOWN, SDMMC3),
	/* MMC3 Card Detect pin */
	PAD_CFG_GPIO_INPUT(SDMMC3_CD_N, PINMUX_PULL_UP),
	/* Disable SD card reader power so it can be reset even on warm boot.
	   Payloads must enable power before accessing SD card slots. */
	PAD_CFG_GPIO_OUT0(KB_ROW0, PINMUX_PULL_NONE),
};

static const struct pad_config sdmmc4_pad[] = {
	/* MMC4 (eMMC) */
	PAD_CFG_SFIO(SDMMC4_CLK, PINMUX_INPUT_ENABLE, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT4, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT5, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT6, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
	PAD_CFG_SFIO(SDMMC4_DAT7, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4),
};

static const struct pad_config padcfgs[] = {
	/* We pull the USB VBUS signals up but keep them as inputs since the
	 * voltage source likes to drive them low on overcurrent conditions */
	PAD_CFG_GPIO_INPUT(USB_VBUS_EN0, PINMUX_PULL_UP),
	PAD_CFG_GPIO_INPUT(USB_VBUS_EN1, PINMUX_PULL_UP),
};

static const struct pad_config i2c1_pad[] = {
	/* GEN1 I2C */
	PAD_CFG_SFIO(GEN1_I2C_SCL, PINMUX_INPUT_ENABLE, I2C1),
	PAD_CFG_SFIO(GEN1_I2C_SDA, PINMUX_INPUT_ENABLE, I2C1),
};

static const struct funit_cfg funitcfgs[] = {
	FUNIT_CFG(SDMMC3, PLLP, 48000, sdmmc3_pad, ARRAY_SIZE(sdmmc3_pad)),
	FUNIT_CFG(SDMMC4, PLLP, 48000, sdmmc4_pad, ARRAY_SIZE(sdmmc4_pad)),
	FUNIT_CFG(I2C1, PLLP, 100, i2c1_pad, ARRAY_SIZE(i2c1_pad)),
};

static void setup_ec_spi(void)
{
	struct tegra_spi_channel *spi;

	spi = tegra_spi_init(CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS);
}

static void setup_usb(void)
{
	clock_enable_clear_reset(CLK_L_USBD, CLK_H_USB3, 0, 0, 0, 0);

	usb_setup_utmip((void *)TEGRA_USBD_BASE);
	usb_setup_utmip((void *)TEGRA_USB3_BASE);
}

static const struct pad_config i2s1_pad[] = {
	/* I2S1 */
	PAD_CFG_SFIO(DAP2_SCLK, PINMUX_INPUT_ENABLE, I2S1),
	PAD_CFG_SFIO(DAP2_FS, PINMUX_INPUT_ENABLE, I2S1),
	PAD_CFG_SFIO(DAP2_DOUT, PINMUX_INPUT_ENABLE, I2S1),
	PAD_CFG_SFIO(DAP2_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1),
	/* codec MCLK via EXTPERIPH1 */
	PAD_CFG_SFIO(DAP_MCLK1, PINMUX_PULL_NONE, EXTPERIPH1),
};

static const struct funit_cfg audio_funit[] = {
	/* We need 1.5MHz for I2S1. So we use CLK_M */
	FUNIT_CFG(I2S1, CLK_M, 1500, i2s1_pad, ARRAY_SIZE(i2s1_pad)),
};

/* Audio init: clocks and enables/resets */
static void setup_audio(void)
{
	/*
	 * External peripheral 1: audio codec (max98090) uses 12MHz CLK1
	 * NOTE: We can't use a funits struct/call here because EXTPERIPH1/2/3
	 * don't have BASE regs or CAR RST/ENA bits. Also, the mux setting for
	 * EXTPERIPH1/DAP_MCLK1 is rolled into the I2S1 padcfg.
	 */
	clock_configure_source(extperiph1, CLK_M, 12000);

	soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit));

	clock_external_output(1);	/* For external MAX98090 audio codec. */

	/*
	 * Confirmed by NVIDIA hardware team, we need to take ALL audio devices
	 * connected to AHUB (AUDIO, APBIF, I2S, DAM, AMX, ADX, SPDIF, AFC) out
	 * of reset and clock-enabled, otherwise reading AHUB devices (in our
	 * case, I2S/APBIF/AUDIO<XBAR>) will hang.
	 */
	clock_enable_audio();
}

static void mainboard_init(device_t dev)
{
	soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
	soc_configure_funits(funitcfgs, ARRAY_SIZE(funitcfgs));

	setup_ec_spi();
	setup_usb();

	setup_audio();
	i2c_init(I2C1_BUS);		/* for max98090 codec */
}

static void mainboard_enable(device_t dev)
{
	dev->ops->init = &mainboard_init;
}

struct chip_operations mainboard_ops = {
	.name   = "rush",
	.enable_dev = mainboard_enable,
};