| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/mmio.h> |
| #include <boot/coreboot_tables.h> |
| #include <device/device.h> |
| #include <gpio.h> |
| #include <soc/addressmap.h> |
| #include <soc/clk_rst.h> |
| #include <soc/clock.h> |
| #include <soc/mc.h> |
| #include <soc/nvidia/tegra/i2c.h> |
| #include <soc/pmc.h> |
| #include <soc/spi.h> |
| #include <soc/nvidia/tegra/usb.h> |
| #include <symbols.h> |
| #include <vendorcode/google/chromeos/chromeos.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. |
| */ |
| 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_EMC | CLK_H_I2C2 | CLK_H_PMC | |
| CLK_H_MEM | 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 = { |
| .name = "nyan_big", |
| .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); |
| } |