/* SPDX-License-Identifier: GPL-2.0-only */ #include <device/mmio.h> #include <device/device.h> #include <boot/coreboot_tables.h> #include <gpio.h> #include <soc/addressmap.h> #include <soc/clock.h> #include <soc/clk_rst.h> #include <soc/mc.h> #include <soc/nvidia/tegra/i2c.h> #include <soc/nvidia/tegra/usb.h> #include <soc/pmc.h> #include <soc/spi.h> #include <symbols.h> static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE; static void set_clock_sources(void) { /* * The max98090 codec and the temperature sensor are on I2C1. These * can both run at 400 KHz, but the kernel sets the bus to 100 KHz. */ clock_configure_i2c_scl_freq(i2c1, PLLP, 100); /* * MMC3 and MMC4: Set base clock frequency for SD Clock to Tegra MMC's * maximum speed (48MHz) so we can change SDCLK by second stage divisor * in payloads, without touching base clock. */ clock_configure_source(sdmmc3, PLLP, 48000); clock_configure_source(sdmmc4, PLLP, 48000); /* External peripheral 1: audio codec (max98090) using 12MHz CLK1. * Note the source id of CLK_M for EXTPERIPH1 is 3. */ clock_configure_irregular_source(extperiph1, CLK_M, 12000, 3); /* * We need 1.5MHz. So, we use CLK_M. CLK_DIVIDER macro returns a divisor * (0xe) a little bit off from the ideal value (0xd) but it's good * enough for beeps. The source id of CLK_M for I2S is 6. */ clock_configure_irregular_source(i2s1, CLK_M, 1500, 6); /* Note source id of PLLP for HOST1x is 4. */ clock_configure_irregular_source(host1x, PLLP, 408000, 4); /* Use PLLD_OUT0 as clock source for disp1 */ clrsetbits32(&clk_rst->clk_src_disp1, CLK_SOURCE_MASK | CLK_DIVISOR_MASK, 2 /*PLLD_OUT0 */ << CLK_SOURCE_SHIFT); } static void setup_pinmux(void) { // I2C1 clock. pinmux_set_config(PINMUX_GEN1_I2C_SCL_INDEX, PINMUX_GEN1_I2C_SCL_FUNC_I2C1 | PINMUX_INPUT_ENABLE); // I2C1 data. pinmux_set_config(PINMUX_GEN1_I2C_SDA_INDEX, PINMUX_GEN1_I2C_SDA_FUNC_I2C1 | PINMUX_INPUT_ENABLE); // I2C2 clock. pinmux_set_config(PINMUX_GEN2_I2C_SCL_INDEX, PINMUX_GEN2_I2C_SCL_FUNC_I2C2 | PINMUX_INPUT_ENABLE | PINMUX_OPEN_DRAIN); // I2C2 data. pinmux_set_config(PINMUX_GEN2_I2C_SDA_INDEX, PINMUX_GEN2_I2C_SDA_FUNC_I2C2 | PINMUX_INPUT_ENABLE | PINMUX_OPEN_DRAIN); // I2C4 (DDC) clock. pinmux_set_config(PINMUX_DDC_SCL_INDEX, PINMUX_DDC_SCL_FUNC_I2C4 | PINMUX_INPUT_ENABLE); // I2C4 (DDC) data. pinmux_set_config(PINMUX_DDC_SDA_INDEX, PINMUX_DDC_SDA_FUNC_I2C4 | PINMUX_INPUT_ENABLE); // TODO(hungte) Revice pinmux setup, make nice little SoC functions for // every single logical thing instead of dumping a wall of code below. uint32_t pin_up = PINMUX_PULL_UP | PINMUX_INPUT_ENABLE, pin_down = PINMUX_PULL_DOWN | PINMUX_INPUT_ENABLE, pin_none = PINMUX_PULL_NONE | PINMUX_INPUT_ENABLE; // MMC3 (sdcard reader) pinmux_set_config(PINMUX_SDMMC3_CLK_INDEX, PINMUX_SDMMC3_CLK_FUNC_SDMMC3 | pin_none); pinmux_set_config(PINMUX_SDMMC3_CMD_INDEX, PINMUX_SDMMC3_CMD_FUNC_SDMMC3 | pin_up); pinmux_set_config(PINMUX_SDMMC3_DAT0_INDEX, PINMUX_SDMMC3_DAT0_FUNC_SDMMC3 | pin_up); pinmux_set_config(PINMUX_SDMMC3_DAT1_INDEX, PINMUX_SDMMC3_DAT1_FUNC_SDMMC3 | pin_up); pinmux_set_config(PINMUX_SDMMC3_DAT2_INDEX, PINMUX_SDMMC3_DAT2_FUNC_SDMMC3 | pin_up); pinmux_set_config(PINMUX_SDMMC3_DAT3_INDEX, PINMUX_SDMMC3_DAT3_FUNC_SDMMC3 | pin_up); pinmux_set_config(PINMUX_SDMMC3_CLK_LB_IN_INDEX, PINMUX_SDMMC3_CLK_LB_IN_FUNC_SDMMC3 | pin_up); pinmux_set_config(PINMUX_SDMMC3_CLK_LB_OUT_INDEX, PINMUX_SDMMC3_CLK_LB_OUT_FUNC_SDMMC3 | pin_down); // MMC3 Card Detect pin. gpio_input_pullup(GPIO(V2)); // Disable SD card reader power so it can be reset even on warm boot. // Payloads must enable power before accessing SD card slots. gpio_output(GPIO(R0), 0); // MMC4 (eMMC) pinmux_set_config(PINMUX_SDMMC4_CLK_INDEX, PINMUX_SDMMC4_CLK_FUNC_SDMMC4 | pin_none); pinmux_set_config(PINMUX_SDMMC4_CMD_INDEX, PINMUX_SDMMC4_CMD_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT0_INDEX, PINMUX_SDMMC4_DAT0_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT1_INDEX, PINMUX_SDMMC4_DAT1_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT2_INDEX, PINMUX_SDMMC4_DAT2_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT3_INDEX, PINMUX_SDMMC4_DAT3_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT4_INDEX, PINMUX_SDMMC4_DAT4_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT5_INDEX, PINMUX_SDMMC4_DAT5_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT6_INDEX, PINMUX_SDMMC4_DAT6_FUNC_SDMMC4 | pin_up); pinmux_set_config(PINMUX_SDMMC4_DAT7_INDEX, PINMUX_SDMMC4_DAT7_FUNC_SDMMC4 | pin_up); /* We pull the USB VBUS signals up but keep them as inputs since the * voltage source likes to drive them low on overcurrent conditions */ gpio_input_pullup(GPIO(N4)); /* USB VBUS EN0 */ gpio_input_pullup(GPIO(N5)); /* USB VBUS EN1 */ /* Clock output 1 (for external peripheral) */ pinmux_set_config(PINMUX_DAP_MCLK1_INDEX, PINMUX_DAP_MCLK1_FUNC_EXTPERIPH1 | PINMUX_PULL_NONE); /* I2S1 */ pinmux_set_config(PINMUX_DAP2_DIN_INDEX, PINMUX_DAP2_DIN_FUNC_I2S1 | PINMUX_INPUT_ENABLE); pinmux_set_config(PINMUX_DAP2_DOUT_INDEX, PINMUX_DAP2_DOUT_FUNC_I2S1 | PINMUX_INPUT_ENABLE); pinmux_set_config(PINMUX_DAP2_FS_INDEX, PINMUX_DAP2_FS_FUNC_I2S1 | PINMUX_INPUT_ENABLE); pinmux_set_config(PINMUX_DAP2_SCLK_INDEX, PINMUX_DAP2_SCLK_FUNC_I2S1 | PINMUX_INPUT_ENABLE); /* PWM1 */ pinmux_set_config(PINMUX_GPIO_PH1_INDEX, PINMUX_GPIO_PH1_FUNC_PWM1 | PINMUX_PULL_NONE); /* DP HPD */ pinmux_set_config(PINMUX_DP_HPD_INDEX, PINMUX_DP_HPD_FUNC_DP | PINMUX_INPUT_ENABLE); } static void setup_kernel_info(void) { // Setup required information for Linux kernel. // pmc.odmdata: [18:19]: console type, [15:17]: UART id. // TODO(hungte) This should be done by filling BCT values, or derived // from CONFIG_CONSOLE_SERIAL_UART[A-E]. Right now we simply copy the // value defined in BCT. struct tegra_pmc_regs *pmc = (void*)TEGRA_PMC_BASE; write32(&pmc->odmdata, 0x80080000); // Not strictly info, but kernel graphics driver needs this region locked down struct tegra_mc_regs *mc = (void *)TEGRA_MC_BASE; write32(&mc->video_protect_bom, 0); write32(&mc->video_protect_size_mb, 0); write32(&mc->video_protect_reg_ctrl, 1); } static void setup_ec_spi(void) { tegra_spi_init(CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS); } static void mainboard_init(struct device *dev) { set_clock_sources(); clock_external_output(1); /* For external MAX98090 audio codec. */ /* * Confirmed by NVIDIA hardware team, we need to take ALL audio devices * conntected 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. * * Note that CLK_H_MEM (MC) and CLK_H_EMC should be already either * initialized by BootROM, or in romstage SDRAM initialization. */ clock_enable_clear_reset(CLK_L_GPIO | CLK_L_I2C1 | CLK_L_SDMMC4 | CLK_L_I2S0 | CLK_L_I2S1 | CLK_L_I2S2 | CLK_L_SPDIF | CLK_L_USBD | CLK_L_DISP1 | CLK_L_HOST1X | CLK_L_PWM, CLK_H_I2C2 | CLK_H_PMC | CLK_H_USB3, CLK_U_CSITE | CLK_U_SDMMC3, CLK_V_I2C4 | CLK_V_EXTPERIPH1 | CLK_V_APBIF | CLK_V_AUDIO | CLK_V_I2S3 | CLK_V_I2S4 | CLK_V_DAM0 | CLK_V_DAM1 | CLK_V_DAM2, CLK_W_DVFS | CLK_W_AMX0 | CLK_W_ADX0, CLK_X_DPAUX | CLK_X_SOR0 | CLK_X_AMX1 | CLK_X_ADX1 | CLK_X_AFC0 | CLK_X_AFC1 | CLK_X_AFC2 | CLK_X_AFC3 | CLK_X_AFC4 | CLK_X_AFC5); usb_setup_utmip((void*)TEGRA_USBD_BASE); /* USB2 is the camera, we don't need it in firmware */ usb_setup_utmip((void*)TEGRA_USB3_BASE); setup_pinmux(); i2c_init(0); i2c_init(1); i2c_init(3); setup_kernel_info(); clock_init_arm_generic_timer(); setup_ec_spi(); } static void mainboard_enable(struct device *dev) { dev->ops->init = &mainboard_init; } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, }; void lb_board(struct lb_header *header) { struct lb_range *dma; dma = (struct lb_range *)lb_new_record(header); dma->tag = LB_TAG_DMA; dma->size = sizeof(*dma); dma->range_start = (uintptr_t)_dma_coherent; dma->range_size = REGION_SIZE(dma_coherent); }