src/mainboard/google/foster/mainboard.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <arch/mmu.h>
   4 #include <device/device.h>
   5 #include <soc/addressmap.h>
   6 #include <soc/clk_rst.h>
   7 #include <soc/clock.h>
   8 #include <soc/funitcfg.h>
   9 #include <soc/nvidia/tegra/i2c.h>
  10 #include <soc/padconfig.h>
  11 #include <soc/spi.h>
  12 #include <soc/nvidia/tegra/dc.h>
  13 #include <soc/display.h>
  14
  15
  16 static const struct pad_config sdmmc1_pad[] = {
  17         /* MMC1(SDCARD) */
  18         PAD_CFG_SFIO(SDMMC1_CLK, PINMUX_INPUT_ENABLE, SDMMC1),
  19         PAD_CFG_SFIO(SDMMC1_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
  20         PAD_CFG_SFIO(SDMMC1_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
  21         PAD_CFG_SFIO(SDMMC1_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
  22         PAD_CFG_SFIO(SDMMC1_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
  23         PAD_CFG_SFIO(SDMMC1_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
  24         /* MMC1 Card Detect pin */
  25         PAD_CFG_GPIO_INPUT(GPIO_PZ1, PINMUX_PULL_UP),
  26         /* Disable SD card reader power so it can be reset even on warm boot.
  27            Payloads must enable power before accessing SD card slots. */
  28         PAD_CFG_GPIO_OUT0(GPIO_PZ4, PINMUX_PULL_NONE),
  29 };
  30
  31 static const struct pad_config audio_codec_pads[] = {
  32         /* GPIO_X1_AUD(BB3) is AUDIO_LDO_EN (->CODEC RESET_N pin) */
  33         PAD_CFG_GPIO_OUT1(GPIO_X1_AUD, PINMUX_PULL_DOWN),
  34 };
  35
  36 static const struct pad_config padcfgs[] = {
  37         /* We pull the USB VBUS signals up but keep them as inputs since the
  38          * voltage source likes to drive them low on overcurrent conditions */
  39         PAD_CFG_GPIO_INPUT(USB_VBUS_EN1, PINMUX_PULL_NONE | PINMUX_PARKED |
  40                            PINMUX_INPUT_ENABLE | PINMUX_LPDR | PINMUX_IO_HV),
  41
  42         /* Add backlight vdd/enable/pwm/dp hpd pad cfgs here */
  43 };
  44
  45 static const struct pad_config i2c1_pad[] = {
  46         /* GEN1 I2C */
  47         PAD_CFG_SFIO(GEN1_I2C_SCL, PINMUX_INPUT_ENABLE, I2C1),
  48         PAD_CFG_SFIO(GEN1_I2C_SDA, PINMUX_INPUT_ENABLE, I2C1),
  49 };
  50
  51 static const struct pad_config i2s1_pad[] = {
  52         /* I2S1 */
  53         PAD_CFG_SFIO(DAP1_SCLK, PINMUX_INPUT_ENABLE, I2S1),
  54         PAD_CFG_SFIO(DAP1_FS, PINMUX_INPUT_ENABLE, I2S1),
  55         PAD_CFG_SFIO(DAP1_DOUT, PINMUX_INPUT_ENABLE, I2S1),
  56         PAD_CFG_SFIO(DAP1_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1),
  57         /* codec MCLK via AUD SFIO */
  58         PAD_CFG_SFIO(AUD_MCLK, PINMUX_PULL_NONE, AUD),
  59 };
  60
  61 static const struct funit_cfg audio_funit[] = {
  62         /* We need 1.5MHz for I2S1. So we use CLK_M */
  63         FUNIT_CFG(I2S1, CLK_M, 1500, i2s1_pad, ARRAY_SIZE(i2s1_pad)),
  64 };
  65
  66 static const struct funit_cfg funitcfgs[] = {
  67         FUNIT_CFG(SDMMC1, PLLP, 48000, sdmmc1_pad, ARRAY_SIZE(sdmmc1_pad)),
  68         FUNIT_CFG(SDMMC4, PLLP, 48000, NULL, 0),
  69         FUNIT_CFG(I2C1, PLLP, 100, i2c1_pad, ARRAY_SIZE(i2c1_pad)),
  70         FUNIT_CFG(I2C6, PLLP, 400, audio_codec_pads, ARRAY_SIZE(audio_codec_pads)),
  71         FUNIT_CFG_USB(USBD),
  72 };
  73
  74 /* Audio init: clocks and enables/resets */
  75 static void setup_audio(void)
  76 {
  77         /* Audio codec (ES755) uses OSC freq (via AUD_MCLK), s/b 38.4MHz */
  78         soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit));
  79
  80         /*
  81          * As per NVIDIA hardware team, we need to take ALL audio devices
  82          * connected to AHUB (AUDIO, APB2APE, I2S, SPDIF, etc.) out of reset
  83          * and clock-enabled, otherwise reading AHUB devices (in our case,
  84          * I2S/APBIF/AUDIO<XBAR>) will hang.
  85          */
  86         soc_configure_ape();
  87         clock_enable_audio();
  88 }
  89
  90 static void mainboard_init(struct device *dev)
  91 {
  92         soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
  93         soc_configure_funits(funitcfgs, ARRAY_SIZE(funitcfgs));
  94
  95         i2c_init(I2C1_BUS);
  96         setup_audio();
  97 }
  98
  99 static void mainboard_enable(struct device *dev)
 100 {
 101         dev->ops->init = &mainboard_init;
 102 }
 103
 104 struct chip_operations mainboard_ops = {
 105         .enable_dev = mainboard_enable,
 106 };