src/mainboard/google/foster/bootblock.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <bootblock_common.h>
   5 #include <device/i2c_simple.h>
   6 #include <soc/addressmap.h>
   7 #include <soc/clk_rst.h>
   8 #include <soc/clock.h>
   9 #include <soc/funitcfg.h>
  10 #include <soc/nvidia/tegra/i2c.h>
  11 #include <soc/padconfig.h>
  12 #include <soc/spi.h>    /* FIXME: move back to soc code? */
  13
  14 #include "pmic.h"
  15
  16 static const struct pad_config pmic_pads[] = {
  17         PAD_CFG_SFIO(PWR_I2C_SCL, PINMUX_INPUT_ENABLE, I2CPMU),
  18         PAD_CFG_SFIO(PWR_I2C_SDA, PINMUX_INPUT_ENABLE, I2CPMU),
  19 };
  20
  21 static const struct pad_config spiflash_pads[] = {
  22         /* QSPI fLash: mosi, miso, clk, cs0, hold, wp  */
  23         PAD_CFG_SFIO(QSPI_IO0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
  24         PAD_CFG_SFIO(QSPI_IO1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
  25         PAD_CFG_SFIO(QSPI_SCK, PINMUX_INPUT_ENABLE, QSPI),
  26         PAD_CFG_SFIO(QSPI_CS_N, PINMUX_INPUT_ENABLE, QSPI),
  27         PAD_CFG_SFIO(QSPI_IO2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
  28         PAD_CFG_SFIO(QSPI_IO3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
  29 };
  30
  31 /********************* TPM ************************************/
  32 static const struct pad_config tpm_pads[] = {
  33         PAD_CFG_SFIO(GEN3_I2C_SCL, PINMUX_INPUT_ENABLE, I2C3),
  34         PAD_CFG_SFIO(GEN3_I2C_SDA, PINMUX_INPUT_ENABLE, I2C3),
  35 };
  36
  37 static const struct funit_cfg funits[] = {
  38         /* PMIC on I2C5 (PWR_I2C* pads) at 400kHz. */
  39         FUNIT_CFG(I2C5, PLLP, 400, pmic_pads, ARRAY_SIZE(pmic_pads)),
  40         /* SPI flash at 24MHz on QSPI controller. */
  41         FUNIT_CFG(QSPI, PLLP, 24000, spiflash_pads, ARRAY_SIZE(spiflash_pads)),
  42         /* Foster has no TPM yet. This is for futurn TPM on I2C3  @ 400kHz. */
  43         FUNIT_CFG(I2C3, PLLP, 400, tpm_pads, ARRAY_SIZE(tpm_pads)),
  44 };
  45
  46 static const struct pad_config uart_console_pads[] = {
  47         /* UARTA: tx, rx, rts, cts */
  48         PAD_CFG_SFIO(UART1_TX, PINMUX_PULL_NONE, UARTA),
  49         PAD_CFG_SFIO(UART1_RX, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UARTA),
  50         PAD_CFG_SFIO(UART1_RTS, PINMUX_PULL_UP, UARTA),
  51         PAD_CFG_SFIO(UART1_CTS, PINMUX_PULL_UP, UARTA),
  52 };
  53
  54 void bootblock_mainboard_early_init(void)
  55 {
  56         soc_configure_pads(uart_console_pads, ARRAY_SIZE(uart_console_pads));
  57 }
  58
  59 static void set_clock_sources(void)
  60 {
  61         /* UARTA gets PLLP, deactivate CLK_UART_DIV_OVERRIDE */
  62         write32(CLK_RST_REG(clk_src_uarta), PLLP << CLK_SOURCE_SHIFT);
  63 }
  64
  65 void bootblock_mainboard_init(void)
  66 {
  67         set_clock_sources();
  68
  69         soc_configure_funits(funits, ARRAY_SIZE(funits));
  70
  71         i2c_init(I2CPWR_BUS);
  72         pmic_init(I2CPWR_BUS);
  73
  74         /* Foster has no TPM yet. This is for future TPM. */
  75         i2c_init(I2C3_BUS);
  76 }