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Diffstat (limited to 'src/mainboard/google/foster/mainboard.c')
-rw-r--r--src/mainboard/google/foster/mainboard.c129
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diff --git a/src/mainboard/google/foster/mainboard.c b/src/mainboard/google/foster/mainboard.c
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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ * Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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.
+ */
+
+#include <arch/io.h>
+#include <arch/mmu.h>
+#include <boot/coreboot_tables.h>
+#include <delay.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/padconfig.h>
+#include <soc/spi.h>
+#include <soc/nvidia/tegra/dc.h>
+#include <soc/display.h>
+
+#include <vendorcode/google/chromeos/chromeos.h>
+
+static const struct pad_config sdmmc1_pad[] = {
+ /* MMC1(SDCARD) */
+ PAD_CFG_SFIO(SDMMC1_CLK, PINMUX_INPUT_ENABLE, SDMMC1),
+ PAD_CFG_SFIO(SDMMC1_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+ PAD_CFG_SFIO(SDMMC1_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+ PAD_CFG_SFIO(SDMMC1_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+ PAD_CFG_SFIO(SDMMC1_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+ PAD_CFG_SFIO(SDMMC1_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+ /* MMC1 Card Detect pin */
+ PAD_CFG_GPIO_INPUT(GPIO_PZ1, 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(GPIO_PZ4, PINMUX_PULL_NONE),
+};
+
+static const struct pad_config audio_codec_pads[] = {
+ /* GPIO_X1_AUD(BB3) is AUDIO_LDO_EN (->CODEC RESET_N pin) */
+ PAD_CFG_GPIO_OUT1(GPIO_X1_AUD, PINMUX_PULL_DOWN),
+};
+
+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_EN1, PINMUX_PULL_NONE | PINMUX_PARKED |
+ PINMUX_INPUT_ENABLE | PINMUX_LPDR | PINMUX_IO_HV),
+
+ /* Add backlight vdd/enable/pwm/dp hpd pad cfgs here */
+};
+
+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 pad_config i2s1_pad[] = {
+ /* I2S1 */
+ PAD_CFG_SFIO(DAP1_SCLK, PINMUX_INPUT_ENABLE, I2S1),
+ PAD_CFG_SFIO(DAP1_FS, PINMUX_INPUT_ENABLE, I2S1),
+ PAD_CFG_SFIO(DAP1_DOUT, PINMUX_INPUT_ENABLE, I2S1),
+ PAD_CFG_SFIO(DAP1_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1),
+ /* codec MCLK via AUD SFIO */
+ PAD_CFG_SFIO(AUD_MCLK, PINMUX_PULL_NONE, AUD),
+};
+
+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)),
+};
+
+static const struct funit_cfg funitcfgs[] = {
+ FUNIT_CFG(SDMMC1, PLLP, 48000, sdmmc1_pad, ARRAY_SIZE(sdmmc1_pad)),
+ FUNIT_CFG(SDMMC4, PLLP, 48000, NULL, 0),
+ FUNIT_CFG(I2C1, PLLP, 100, i2c1_pad, ARRAY_SIZE(i2c1_pad)),
+ FUNIT_CFG_USB(USBD),
+};
+
+/* Audio init: clocks and enables/resets */
+static void setup_audio(void)
+{
+ /* Audio codec (ES755) uses OSC freq (via AUD_MCLK), s/b 38.4MHz */
+ soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit));
+
+ /*
+ * As per NVIDIA hardware team, we need to take ALL audio devices
+ * connected to AHUB (AUDIO, APB2APE, I2S, SPDIF, etc.) out of reset
+ * and clock-enabled, otherwise reading AHUB devices (in our case,
+ * I2S/APBIF/AUDIO<XBAR>) will hang.
+ */
+ soc_configure_ape();
+ clock_enable_audio();
+}
+
+static void mainboard_init(device_t dev)
+{
+ soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
+ soc_configure_funits(funitcfgs, ARRAY_SIZE(funitcfgs));
+
+ i2c_init(I2C1_BUS);
+ setup_audio();
+}
+
+static void mainboard_enable(device_t dev)
+{
+ dev->ops->init = &mainboard_init;
+}
+
+struct chip_operations mainboard_ops = {
+ .name = "foster",
+ .enable_dev = mainboard_enable,
+};