--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/dts-v1/;
+
+#include <dt-bindings/gpio/x86-gpio.h>
+
+/include/ "skeleton.dtsi"
+/include/ "keyboard.dtsi"
+/include/ "reset.dtsi"
+/include/ "rtc.dtsi"
+/include/ "tsc_timer.dtsi"
+
+#ifdef CONFIG_CHROMEOS
+#include "chromeos-x86.dtsi"
+#include "flashmap-x86-ro.dtsi"
+#include "flashmap-16mb-rw.dtsi"
+#endif
+
+#include <asm/intel_pinctrl_defs.h>
+#include <asm/arch-apollolake/cpu.h>
+#include <asm/arch-apollolake/gpio.h>
+#include <asm/arch-apollolake/iomap.h>
+#include <asm/arch-apollolake/pm.h>
+
+/ {
+ model = "Google Coral";
+ compatible = "google,coral", "intel,apollolake";
+
+ aliases {
+ cros-ec0 = &cros_ec;
+ fsp = &fsp_s;
+ spi0 = &spi;
+ };
+
+ config {
+ silent_console = <0>;
+ };
+
+ chosen {
+ stdout-path = &serial;
+ };
+
+ cpus {
+ u-boot,dm-pre-reloc;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ u-boot,dm-pre-reloc;
+ device_type = "cpu";
+ compatible = "intel,apl-cpu";
+ reg = <0>;
+ intel,apic-id = <0>;
+ };
+
+ cpu@1 {
+ device_type = "cpu";
+ compatible = "intel,apl-cpu";
+ reg = <1>;
+ intel,apic-id = <2>;
+ };
+
+ cpu@2 {
+ device_type = "cpu";
+ compatible = "intel,apl-cpu";
+ reg = <2>;
+ intel,apic-id = <4>;
+ };
+
+ cpu@3 {
+ device_type = "cpu";
+ compatible = "intel,apl-cpu";
+ reg = <3>;
+ intel,apic-id = <6>;
+ };
+
+ };
+
+ keyboard {
+ intel,duplicate-por;
+ };
+
+ pci {
+ compatible = "pci-x86";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ u-boot,dm-pre-reloc;
+ ranges = <0x02000000 0x0 0xc0000000 0xc0000000 0 0x10000000
+ 0x42000000 0x0 0xb0000000 0xb0000000 0 0x10000000
+ 0x01000000 0x0 0x1000 0x1000 0 0xefff>;
+ u-boot,skip-auto-config-until-reloc;
+
+ host_bridge: host-bridge@0,0 {
+ u-boot,dm-pre-reloc;
+ reg = <0x00000000 0 0 0 0>;
+ compatible = "intel,apl-hostbridge";
+ pciex-region-size = <0x10000000>;
+ /*
+ * Parameters used by the FSP-S binary blob. This is
+ * really unfortunate since these parameters mostly
+ * relate to drivers but we need them in one place. We
+ * could put them in the driver nodes easily, but then
+ * would have to scan each node to find them. So just
+ * dump them here for now.
+ */
+ fsp_s: fsp-s {
+ };
+ };
+
+ punit@0,1 {
+ u-boot,dm-pre-reloc;
+ reg = <0x00000800 0 0 0 0>;
+ compatible = "intel,apl-punit";
+ };
+
+ p2sb: p2sb@d,0 {
+ u-boot,dm-pre-reloc;
+ reg = <0x02006810 0 0 0 0>;
+ compatible = "intel,apl-p2sb";
+ early-regs = <IOMAP_P2SB_BAR 0x100000>;
+
+ n {
+ compatible = "intel,apl-pinctrl";
+ u-boot,dm-pre-reloc;
+ intel,p2sb-port-id = <PID_GPIO_N>;
+ gpio_n: gpio-n {
+ compatible = "intel,gpio";
+ u-boot,dm-pre-reloc;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+
+ nw {
+ u-boot,dm-pre-reloc;
+ compatible = "intel,apl-pinctrl";
+ intel,p2sb-port-id = <PID_GPIO_NW>;
+ #gpio-cells = <2>;
+ gpio_nw: gpio-nw {
+ compatible = "intel,gpio";
+ u-boot,dm-pre-reloc;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+
+ w {
+ u-boot,dm-pre-reloc;
+ compatible = "intel,apl-pinctrl";
+ intel,p2sb-port-id = <PID_GPIO_W>;
+ #gpio-cells = <2>;
+ gpio_w: gpio-w {
+ compatible = "intel,gpio";
+ u-boot,dm-pre-reloc;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+
+ sw {
+ u-boot,dm-pre-reloc;
+ compatible = "intel,apl-pinctrl";
+ intel,p2sb-port-id = <PID_GPIO_SW>;
+ #gpio-cells = <2>;
+ gpio_sw: gpio-sw {
+ compatible = "intel,gpio";
+ u-boot,dm-pre-reloc;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+
+ itss {
+ u-boot,dm-pre-reloc;
+ compatible = "intel,apl-itss";
+ intel,p2sb-port-id = <PID_ITSS>;
+ intel,pmc-routes = <
+ PMC_GPE_SW_31_0 GPIO_GPE_SW_31_0
+ PMC_GPE_SW_63_32 GPIO_GPE_SW_63_32
+ PMC_GPE_NW_31_0 GPIO_GPE_NW_31_0
+ PMC_GPE_NW_63_32 GPIO_GPE_NW_63_32
+ PMC_GPE_NW_95_64 GPIO_GPE_NW_95_64
+ PMC_GPE_N_31_0 GPIO_GPE_N_31_0
+ PMC_GPE_N_63_32 GPIO_GPE_N_63_32
+ PMC_GPE_W_31_0 GPIO_GPE_W_31_0>;
+ };
+ };
+
+ pmc@d,1 {
+ u-boot,dm-pre-reloc;
+ reg = <0x6900 0 0 0 0>;
+
+ /*
+ * Values for BAR0, BAR2 and ACPI_BASE for when PCI
+ * auto-configure is not available
+ */
+ early-regs = <0xfe042000 0x2000
+ 0xfe044000 0x2000
+ IOMAP_ACPI_BASE IOMAP_ACPI_SIZE>;
+ compatible = "intel,apl-pmc";
+ gpe0-dwx-mask = <0xf>;
+ gpe0-dwx-shift-base = <4>;
+
+ /*
+ * GPE configuration
+ * Note that GPE events called out in ASL code rely on
+ * this route, i.e., if this route changes then the
+ * affected GPE * offset bits also need to be changed.
+ * This sets the PMC register GPE_CFG fields.
+ */
+ gpe0-dw = <PMC_GPE_N_31_0
+ PMC_GPE_N_63_32
+ PMC_GPE_SW_31_0>;
+ gpe0-sts = <0x20>;
+ gpe0-en = <0x30>;
+ };
+
+ spi: fast-spi@d,2 {
+ u-boot,dm-pre-reloc;
+ reg = <0x02006a10 0 0 0 0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "intel,fast-spi";
+ early-regs = <IOMAP_SPI_BASE 0x1000>;
+ intel,hardware-seq = <1>;
+
+ fwstore_spi: spi-flash@0 {
+ #size-cells = <1>;
+ #address-cells = <1>;
+ u-boot,dm-pre-reloc;
+ reg = <0>;
+ compatible = "winbond,w25q128fw",
+ "jedec,spi-nor";
+ rw-mrc-cache {
+ label = "rw-mrc-cache";
+ reg = <0x008e0000 0x00010000>;
+ u-boot,dm-pre-reloc;
+ };
+ rw-var-mrc-cache {
+ label = "rw-mrc-cache";
+ reg = <0x008f0000 0x0001000>;
+ u-boot,dm-pre-reloc;
+ };
+ };
+ };
+
+ serial: serial@18,2 {
+ reg = <0x0200c210 0 0 0 0>;
+ u-boot,dm-pre-reloc;
+ compatible = "intel,apl-ns16550";
+ early-regs = <0xde000000 0x20>;
+ reg-shift = <2>;
+ clock-frequency = <1843200>;
+ current-speed = <115200>;
+ };
+
+ pch: pch@1f,0 {
+ reg = <0x0000f800 0 0 0 0>;
+ compatible = "intel,apl-pch";
+ u-boot,dm-pre-reloc;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ lpc {
+ compatible = "intel,apl-lpc";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ u-boot,dm-pre-reloc;
+ cros_ec: cros-ec {
+ u-boot,dm-pre-reloc;
+ compatible = "google,cros-ec-lpc";
+ reg = <0x204 1 0x200 1 0x880 0x80>;
+
+ /*
+ * Describes the flash memory within
+ * the EC
+ */
+ #address-cells = <1>;
+ #size-cells = <1>;
+ flash@8000000 {
+ reg = <0x08000000 0x20000>;
+ erase-value = <0xff>;
+ };
+ };
+ };
+ };
+ };
+
+};
+
+&host_bridge {
+ /*
+ * PL1 override 12000 mW: the energy calculation is wrong with the
+ * current VR solution. Experiments show that SoC TDP max (6W) can be
+ * reached when RAPL PL1 is set to 12W. Set RAPL PL2 to 15W.
+ */
+ tdp-pl-override-mw = <12000 15000>;
+
+ early-pads = <
+ /* These two are for the debug UART */
+ GPIO_46 /* UART2 RX */
+ (PAD_CFG0_MODE_NF1 | PAD_CFG0_LOGICAL_RESET_DEEP)
+ (PAD_CFG1_PULL_NATIVE | PAD_CFG1_IOSSTATE_TX_LAST_RXE)
+
+ GPIO_47 /* UART2 TX */
+ (PAD_CFG0_MODE_NF1 | PAD_CFG0_LOGICAL_RESET_DEEP)
+ (PAD_CFG1_PULL_NATIVE | PAD_CFG1_IOSSTATE_TX_LAST_RXE)
+
+ GPIO_75 /* I2S1_BCLK -- PCH_WP */
+ (PAD_CFG0_MODE_GPIO | PAD_CFG0_LOGICAL_RESET_DEEP)
+ (PAD_CFG1_PULL_UP_20K | PAD_CFG1_IOSSTATE_TXD_RXE)
+
+ /* I2C2 - TPM */
+ GPIO_128 /* LPSS_I2C2_SDA */
+ (PAD_CFG0_MODE_NF1 | PAD_CFG0_LOGICAL_RESET_DEEP)
+ (PAD_CFG1_PULL_UP_2K | PAD_CFG1_IOSSTATE_TX_LAST_RXE)
+ GPIO_129 /* LPSS_I2C2_SCL */
+ (PAD_CFG0_MODE_NF1 | PAD_CFG0_LOGICAL_RESET_DEEP)
+ (PAD_CFG1_PULL_UP_2K | PAD_CFG1_IOSSTATE_TX_LAST_RXE)
+ GPIO_28 /* TPM IRQ */
+ (PAD_CFG0_MODE_GPIO | PAD_CFG0_LOGICAL_RESET_DEEP |
+ PAD_CFG0_TX_DISABLE | PAD_CFG0_ROUTE_IOAPIC |
+ PAD_CFG0_TRIG_LEVEL | PAD_CFG0_RX_POL_INVERT)
+ (PAD_CFG1_PULL_NONE | PAD_CFG1_IOSSTATE_TXD_RXE)
+
+ /*
+ * WLAN_PE_RST - default to deasserted just in case FSP
+ * misbehaves
+ */
+ GPIO_122 /* SIO_SPI_2_RXD */
+ (PAD_CFG0_MODE_GPIO | PAD_CFG0_LOGICAL_RESET_DEEP |
+ PAD_CFG0_RX_DISABLE | 0)
+ (PAD_CFG1_PULL_NONE | PAD_CFG1_IOSSTATE_TX_LAST_RXE)
+
+ /* LPC */
+ PAD_CFG_NF(LPC_ILB_SERIRQ, UP_20K, DEEP, NF1) /* LPC_SERIRQ */
+ PAD_CFG_NF(LPC_CLKOUT0, NONE, DEEP, NF1) /* LPC_CLKOUT0 */
+ PAD_CFG_NF(LPC_CLKOUT1, UP_20K, DEEP, NF1)
+ PAD_CFG_NF(LPC_AD0, UP_20K, DEEP, NF1) /* LPC_AD0 */
+ PAD_CFG_NF(LPC_AD1, UP_20K, DEEP, NF1) /* LPC_AD1 */
+ PAD_CFG_NF(LPC_AD2, UP_20K, DEEP, NF1) /* LPC_AD2 */
+ PAD_CFG_NF(LPC_AD3, UP_20K, DEEP, NF1) /* LPC_AD3 */
+ PAD_CFG_NF(LPC_CLKRUNB, UP_20K, DEEP, NF1) /* LPC_CLKRUN_N */
+ PAD_CFG_NF(LPC_FRAMEB, NATIVE, DEEP, NF1) /* LPC_FRAME_N */
+ >;
+
+ lpddr4-swizzle = /bits/ 8 <
+ /* LP4_PHYS_CH0A */
+
+ /* DQA[0:7] pins of LPDDR4 module */
+ 6 7 5 4 3 1 0 2
+ /* DQA[8:15] pins of LPDDR4 module */
+ 12 10 11 13 14 8 9 15
+ /* DQB[0:7] pins of LPDDR4 module with offset of 16 */
+ 16 22 23 20 18 17 19 21
+ /* DQB[7:15] pins of LPDDR4 module with offset of 16 */
+ 30 28 29 25 24 26 27 31
+
+ /* LP4_PHYS_CH0B */
+ /* DQA[0:7] pins of LPDDR4 module */
+ 7 3 5 2 6 0 1 4
+ /* DQA[8:15] pins of LPDDR4 module */
+ 9 14 12 13 10 11 8 15
+ /* DQB[0:7] pins of LPDDR4 module with offset of 16 */
+ 20 22 23 16 19 17 18 21
+ /* DQB[7:15] pins of LPDDR4 module with offset of 16 */
+ 28 24 26 27 29 30 31 25
+
+ /* LP4_PHYS_CH1A */
+
+ /* DQA[0:7] pins of LPDDR4 module */
+ 2 1 6 7 5 4 3 0
+ /* DQA[8:15] pins of LPDDR4 module */
+ 11 10 8 9 12 15 13 14
+ /* DQB[0:7] pins of LPDDR4 module with offset of 16 */
+ 17 23 19 16 21 22 20 18
+ /* DQB[7:15] pins of LPDDR4 module with offset of 16 */
+ 31 29 26 25 28 27 24 30
+
+ /* LP4_PHYS_CH1B */
+
+ /* DQA[0:7] pins of LPDDR4 module */
+ 4 3 7 5 6 1 0 2
+ /* DQA[8:15] pins of LPDDR4 module */
+ 15 9 8 11 14 13 12 10
+ /* DQB[0:7] pins of LPDDR4 module with offset of 16 */
+ 20 23 22 21 18 19 16 17
+ /* DQB[7:15] pins of LPDDR4 module with offset of 16 */
+ 25 28 30 31 26 27 24 29>;
+};
+
+&fsp_s {
+ u-boot,dm-pre-proper;
+
+ /* Disable unused clkreq of PCIe root ports */
+ pcie-rp-clkreq-pin = /bits/ 8 <0 /* wifi/bt */
+ CLKREQ_DISABLED
+ CLKREQ_DISABLED
+ CLKREQ_DISABLED
+ CLKREQ_DISABLED
+ CLKREQ_DISABLED>;
+
+ /*
+ * GPIO for PERST_0
+ * If the Board has PERST_0 signal, assign the GPIO
+ * If the Board does not have PERST_0, assign GPIO_PRT0_UDEF
+ *
+ * This are not used yet, so comment them out for now.
+ *
+ * prt0-gpio = <GPIO_122>;
+ *
+ * GPIO for SD card detect
+ * sdcard-cd-gpio = <GPIO_177>;
+ */
+
+ /*
+ * Order is emmc-tx-data-cntl1, emmc-tx-data-cntl2,
+ * emmc-rx-cmd-data-cntl1, emmc-rx-cmd-data-cntl2
+ *
+ * EMMC TX DATA Delay 1
+ * Refer to EDS-Vol2-22.3
+ * [14:8] steps of delay for HS400, each 125ps
+ * [6:0] steps of delay for SDR104/HS200, each 125ps
+
+ /*
+ * EMMC TX DATA Delay 2
+ * Refer to EDS-Vol2-22.3.
+ * [30:24] steps of delay for SDR50, each 125ps
+ * [22:16] steps of delay for DDR50, each 125ps
+ * [14:8] steps of delay for SDR25/HS50, each 125ps
+ * [6:0] steps of delay for SDR12, each 125ps
+ */
+
+ /*
+ * EMMC RX CMD/DATA Delay 1
+ * Refer to EDS-Vol2-22.3.
+ * [30:24] steps of delay for SDR50, each 125ps
+ * [22:16] steps of delay for DDR50, each 125ps
+ * [14:8] steps of delay for SDR25/HS50, each 125ps
+ * [6:0] steps of delay for SDR12, each 125ps
+ */
+
+ /*
+ * EMMC RX CMD/DATA Delay 2
+ * Refer to EDS-Vol2-22.3.
+ * [17:16] stands for Rx Clock before Output Buffer
+ * [14:8] steps of delay for Auto Tuning Mode, each 125ps
+ * [6:0] steps of delay for HS200, each 125ps
+ */
+ emmc = <0x0c16 0x28162828 0x00181717 0x10008>;
+
+ /* Enable DPTF */
+ dptf-enable;
+
+ /* Enable Audio Clock and Power gating */
+ hdaudio-clk-gate-enable;
+ hdaudio-pwr-gate-enable;
+ hdaudio-bios-config-lockdown;
+
+ /* Enable lpss s0ix */
+ lpss-s0ix-enable;
+
+ /*
+ * TODO(sjg@chromium.org): Move this to the I2C nodes
+ * Intel Common SoC Config
+ *+-------------------+---------------------------+
+ *| Field | Value |
+ *+-------------------+---------------------------+
+ *| I2C0 | Audio |
+ *| I2C2 | TPM |
+ *| I2C3 | Touchscreen |
+ *| I2C4 | Trackpad |
+ *| I2C5 | Digitizer |
+ *+-------------------+---------------------------+
+ *
+ common_soc_config" = "{
+ .i2c[0] = {
+ .speed = I2C_SPEED_FAST,
+ .rise-time-ns = 104,
+ .fall-time-ns = 52,
+ },
+ .i2c[2] = {
+ .early_init = 1,
+ .speed = I2C_SPEED_FAST,
+ .rise-time-ns = 57,
+ .fall-time-ns = 28,
+ },
+ .i2c[3] = {
+ .speed = I2C_SPEED_FAST,
+ .rise-time-ns = 76,
+ .fall-time-ns = 164,
+ },
+ .i2c[4] = {
+ .speed = I2C_SPEED_FAST,
+ .rise-time-ns = 114,
+ .fall-time-ns = 164,
+ .data_hold_time_ns = 350,
+ },
+ .i2c[5] = {
+ .speed = I2C_SPEED_FAST,
+ .rise-time-ns = 152,
+ .fall-time-ns = 30,
+ },
+ }"
+ */
+
+ /* Minimum SLP S3 assertion width 28ms */
+ slp-s3-assertion-width-usecs = <28000>;
+
+ pads = <
+ /* PCIE_WAKE[0:3]_N */
+ PAD_CFG_GPI_SCI_LOW(GPIO_205, UP_20K, DEEP, EDGE_SINGLE) /* WLAN */
+ PAD_CFG_GPI(GPIO_206, UP_20K, DEEP) /* Unused */
+ PAD_CFG_GPI(GPIO_207, UP_20K, DEEP) /* Unused */
+ PAD_CFG_GPI(GPIO_208, UP_20K, DEEP) /* Unused */
+
+ /* EMMC interface */
+ PAD_CFG_NF(GPIO_156, DN_20K, DEEP, NF1) /* EMMC_CLK */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_157, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D0 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_158, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D1 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_159, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D2 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_160, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D3 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_161, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D4 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_162, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D5 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_163, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D6 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_164, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_D7 */
+ PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_165, UP_20K, DEEP, NF1, HIZCRX1, DISPUPD) /* EMMC_CMD */
+ PAD_CFG_NF(GPIO_182, DN_20K, DEEP, NF1) /* EMMC_RCLK */
+
+ /* SDIO -- unused */
+ PAD_CFG_GPI(GPIO_166, UP_20K, DEEP) /* SDIO_CLK */
+ PAD_CFG_GPI(GPIO_167, UP_20K, DEEP) /* SDIO_D0 */
+ /* Configure SDIO to enable power gating */
+ PAD_CFG_NF(GPIO_168, UP_20K, DEEP, NF1) /* SDIO_D1 */
+ PAD_CFG_GPI(GPIO_169, UP_20K, DEEP) /* SDIO_D2 */
+ PAD_CFG_GPI(GPIO_170, UP_20K, DEEP) /* SDIO_D3 */
+ PAD_CFG_GPI(GPIO_171, UP_20K, DEEP) /* SDIO_CMD */
+
+ /* SDCARD */
+ /* Pull down clock by 20K */
+ PAD_CFG_NF(GPIO_172, DN_20K, DEEP, NF1) /* SDCARD_CLK */
+ PAD_CFG_NF(GPIO_173, UP_20K, DEEP, NF1) /* SDCARD_D0 */
+ PAD_CFG_NF(GPIO_174, UP_20K, DEEP, NF1) /* SDCARD_D1 */
+ PAD_CFG_NF(GPIO_175, UP_20K, DEEP, NF1) /* SDCARD_D2 */
+ PAD_CFG_NF(GPIO_176, UP_20K, DEEP, NF1) /* SDCARD_D3 */
+ /* Card detect is active LOW with external pull up */
+ PAD_CFG_NF(GPIO_177, NONE, DEEP, NF1) /* SDCARD_CD_N */
+ PAD_CFG_NF(GPIO_178, UP_20K, DEEP, NF1) /* SDCARD_CMD */
+ /* CLK feedback, internal signal, needs 20K pull down */
+ PAD_CFG_NF(GPIO_179, DN_20K, DEEP, NF1) /* SDCARD_CLK_FB */
+ /* No h/w write proect for uSD cards, pull down by 20K */
+ PAD_CFG_NF(GPIO_186, DN_20K, DEEP, NF1) /* SDCARD_LVL_WP */
+ /* EN_SD_SOCKET_PWR_L for SD slot power control. Default on */
+ PAD_CFG_GPO(GPIO_183, 0, DEEP) /* SDIO_PWR_DOWN_N */
+
+ /* SMBus -- unused */
+ PAD_CFG_GPI(SMB_ALERTB, UP_20K, DEEP) /* SMB_ALERT _N */
+ PAD_CFG_GPI(SMB_CLK, UP_20K, DEEP) /* SMB_CLK */
+ PAD_CFG_GPI(SMB_DATA, UP_20K, DEEP) /* SMB_DATA */
+
+ /* LPC */
+ PAD_CFG_NF(LPC_ILB_SERIRQ, UP_20K, DEEP, NF1) /* LPC_SERIRQ */
+ PAD_CFG_NF(LPC_CLKOUT0, NONE, DEEP, NF1) /* LPC_CLKOUT0 */
+ PAD_CFG_NF(LPC_CLKOUT1, UP_20K, DEEP, NF1)
+ PAD_CFG_NF(LPC_AD0, UP_20K, DEEP, NF1) /* LPC_AD0 */
+ PAD_CFG_NF(LPC_AD1, UP_20K, DEEP, NF1) /* LPC_AD1 */
+ PAD_CFG_NF(LPC_AD2, UP_20K, DEEP, NF1) /* LPC_AD2 */
+ PAD_CFG_NF(LPC_AD3, UP_20K, DEEP, NF1) /* LPC_AD3 */
+ PAD_CFG_NF(LPC_CLKRUNB, UP_20K, DEEP, NF1) /* LPC_CLKRUN_N */
+ PAD_CFG_NF(LPC_FRAMEB, NATIVE, DEEP, NF1) /* LPC_FRAME_N */
+
+ /* I2C0 - Audio */
+ PAD_CFG_NF(GPIO_124, UP_2K, DEEP, NF1) /* LPSS_I2C0_SDA */
+ PAD_CFG_NF(GPIO_125, UP_2K, DEEP, NF1) /* LPSS_I2C0_SCL */
+
+ /* I2C1 - NFC with external pulls */
+ PAD_CFG_NF(GPIO_126, NONE, DEEP, NF1) /* LPSS_I2C1_SDA */
+ PAD_CFG_NF(GPIO_127, NONE, DEEP, NF1) /* LPSS_I2C1_SCL */
+
+ /* I2C2 - TPM */
+ PAD_CFG_NF(GPIO_128, UP_2K, DEEP, NF1) /* LPSS_I2C2_SDA */
+ PAD_CFG_NF(GPIO_129, UP_2K, DEEP, NF1) /* LPSS_I2C2_SCL */
+
+ /* I2C3 - touch */
+ PAD_CFG_NF(GPIO_130, UP_2K, DEEP, NF1) /* LPSS_I2C3_SDA */
+ PAD_CFG_NF(GPIO_131, UP_2K, DEEP, NF1) /* LPSS_I2C3_SCL */
+
+ /* I2C4 - trackpad */
+ /* LPSS_I2C4_SDA */
+ PAD_CFG_NF_IOSSTATE(GPIO_132, UP_2K, DEEP, NF1, HIZCRX1)
+ /* LPSS_I2C4_SCL */
+ PAD_CFG_NF_IOSSTATE(GPIO_133, UP_2K, DEEP, NF1, HIZCRX1)
+
+ /* I2C5 -- pen with external pulls */
+ PAD_CFG_NF(GPIO_134, NONE, DEEP, NF1) /* LPSS_I2C5_SDA */
+ PAD_CFG_NF(GPIO_135, NONE, DEEP, NF1) /* LPSS_I2C5_SCL */
+
+ /* I2C6-7 -- unused */
+ PAD_CFG_GPI(GPIO_136, UP_20K, DEEP) /* LPSS_I2C6_SDA */
+ PAD_CFG_GPI(GPIO_137, UP_20K, DEEP) /* LPSS_I2C6_SCL */
+ PAD_CFG_GPI(GPIO_138, UP_20K, DEEP) /* LPSS_I2C7_SDA */
+ PAD_CFG_GPI(GPIO_139, UP_20K, DEEP) /* LPSS_I2C7_SCL */
+
+ /* Audio Amp - I2S6 */
+ PAD_CFG_NF(GPIO_146, NATIVE, DEEP, NF2) /* ISH_GPIO_0 - I2S6_BCLK */
+ PAD_CFG_NF(GPIO_147, NATIVE, DEEP, NF2) /* ISH_GPIO_1 - I2S6_WS_SYNC */
+ PAD_CFG_GPI(GPIO_148, UP_20K, DEEP) /* ISH_GPIO_2 - unused */
+ PAD_CFG_NF(GPIO_149, NATIVE, DEEP, NF2) /* ISH_GPIO_3 - I2S6_SDO */
+
+ /* NFC Reset */
+ PAD_CFG_GPO(GPIO_150, 1, DEEP) /* ISH_GPIO_4 */
+
+ PAD_CFG_GPI(GPIO_151, UP_20K, DEEP) /* ISH_GPIO_5 - unused */
+
+ /* Touch enable */
+ PAD_CFG_GPO(GPIO_152, 1, DEEP) /* ISH_GPIO_6 */
+
+ PAD_CFG_GPI(GPIO_153, UP_20K, DEEP) /* ISH_GPIO_7 - unused */
+ PAD_CFG_GPI(GPIO_154, UP_20K, DEEP) /* ISH_GPIO_8 - unused */
+ PAD_CFG_GPI(GPIO_155, UP_20K, DEEP) /* ISH_GPIO_9 - unused */
+
+ /* PCIE_CLKREQ[0:3]_N */
+ PAD_CFG_NF(GPIO_209, NONE, DEEP, NF1) /* WLAN with external pull */
+ PAD_CFG_GPI(GPIO_210, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_211, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_212, UP_20K, DEEP) /* unused */
+
+ /* OSC_CLK_OUT_[0:4] -- unused */
+ PAD_CFG_GPI(OSC_CLK_OUT_0, UP_20K, DEEP)
+ PAD_CFG_GPI(OSC_CLK_OUT_1, UP_20K, DEEP)
+ PAD_CFG_GPI(OSC_CLK_OUT_2, UP_20K, DEEP)
+ PAD_CFG_GPI(OSC_CLK_OUT_3, UP_20K, DEEP)
+ PAD_CFG_GPI(OSC_CLK_OUT_4, UP_20K, DEEP)
+
+ /* PMU Signals */
+ PAD_CFG_GPI(PMU_AC_PRESENT, UP_20K, DEEP) /* PMU_AC_PRESENT - unused */
+ PAD_CFG_NF(PMU_BATLOW_B, UP_20K, DEEP, NF1) /* PMU_BATLOW_N */
+ PAD_CFG_NF(PMU_PLTRST_B, NONE, DEEP, NF1) /* PMU_PLTRST_N */
+ PAD_CFG_NF(PMU_PWRBTN_B, UP_20K, DEEP, NF1) /* PMU_PWRBTN_N */
+ PAD_CFG_NF(PMU_RESETBUTTON_B, NONE, DEEP, NF1) /* PMU_RSTBTN_N */
+ PAD_CFG_NF_IOSSTATE(PMU_SLP_S0_B, NONE, DEEP, NF1, IGNORE) /* PMU_SLP_S0_N */
+ PAD_CFG_NF(PMU_SLP_S3_B, NONE, DEEP, NF1) /* PMU_SLP_S3_N */
+ PAD_CFG_NF(PMU_SLP_S4_B, NONE, DEEP, NF1) /* PMU_SLP_S4_N */
+ PAD_CFG_NF(PMU_SUSCLK, NONE, DEEP, NF1) /* PMU_SUSCLK */
+ PAD_CFG_GPO(PMU_WAKE_B, 1, DEEP) /* EN_PP3300_EMMC */
+ PAD_CFG_NF(SUS_STAT_B, NONE, DEEP, NF1) /* SUS_STAT_N */
+ PAD_CFG_NF(SUSPWRDNACK, NONE, DEEP, NF1) /* SUSPWRDNACK */
+
+ /* DDI[0:1] SDA and SCL -- unused */
+ PAD_CFG_GPI(GPIO_187, UP_20K, DEEP) /* HV_DDI0_DDC_SDA */
+ PAD_CFG_GPI(GPIO_188, UP_20K, DEEP) /* HV_DDI0_DDC_SCL */
+ PAD_CFG_GPI(GPIO_189, UP_20K, DEEP) /* HV_DDI1_DDC_SDA */
+ PAD_CFG_GPI(GPIO_190, UP_20K, DEEP) /* HV_DDI1_DDC_SCL */
+
+ /* MIPI I2C -- unused */
+ PAD_CFG_GPI(GPIO_191, UP_20K, DEEP) /* MIPI_I2C_SDA */
+ PAD_CFG_GPI(GPIO_192, UP_20K, DEEP) /* MIPI_I2C_SCL */
+
+ /* Panel 0 control */
+ PAD_CFG_NF(GPIO_193, NATIVE, DEEP, NF1) /* PNL0_VDDEN */
+ PAD_CFG_NF(GPIO_194, NATIVE, DEEP, NF1) /* PNL0_BKLTEN */
+ PAD_CFG_NF(GPIO_195, NATIVE, DEEP, NF1) /* PNL0_BKLTCTL */
+
+ /* Panel 1 control -- unused */
+ PAD_CFG_NF(GPIO_196, NATIVE, DEEP, NF1) /* PNL1_VDDEN */
+ PAD_CFG_NF(GPIO_197, NATIVE, DEEP, NF1) /* PNL1_BKLTEN */
+ PAD_CFG_NF(GPIO_198, NATIVE, DEEP, NF1) /* PNL1_BKLTCTL */
+
+ /* Hot plug detect */
+ PAD_CFG_NF(GPIO_199, UP_20K, DEEP, NF2) /* HV_DDI1_HPD */
+ PAD_CFG_NF(GPIO_200, UP_20K, DEEP, NF2) /* HV_DDI0_HPD */
+
+ /* MDSI signals -- unused */
+ PAD_CFG_GPI(GPIO_201, UP_20K, DEEP) /* MDSI_A_TE */
+ PAD_CFG_GPI(GPIO_202, UP_20K, DEEP) /* MDSI_A_TE */
+
+ /* USB overcurrent pins */
+ PAD_CFG_NF(GPIO_203, UP_20K, DEEP, NF1) /* USB_OC0_N */
+ PAD_CFG_NF(GPIO_204, UP_20K, DEEP, NF1) /* USB_OC1_N */
+
+ /* PMC SPI -- almost entirely unused */
+ PAD_CFG_GPI(PMC_SPI_FS0, UP_20K, DEEP)
+ PAD_CFG_NF(PMC_SPI_FS1, UP_20K, DEEP, NF2) /* HV_DDI2_HPD -- EDP HPD */
+ PAD_CFG_GPI(PMC_SPI_FS2, UP_20K, DEEP)
+ PAD_CFG_GPI(PMC_SPI_RXD, UP_20K, DEEP)
+ PAD_CFG_GPI(PMC_SPI_TXD, UP_20K, DEEP)
+ PAD_CFG_GPI(PMC_SPI_CLK, UP_20K, DEEP)
+
+ /* PMIC Signals Unused signals related to an old PMIC interface */
+ PAD_CFG_NF_IOSSTATE(PMIC_RESET_B, NATIVE, DEEP, NF1, IGNORE) /* PMIC_RESET_B */
+ PAD_CFG_GPI(GPIO_213, NONE, DEEP) /* unused external pull */
+ PAD_CFG_GPI(GPIO_214, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_215, UP_20K, DEEP) /* unused */
+ PAD_CFG_NF(PMIC_THERMTRIP_B, UP_20K, DEEP, NF1) /* THERMTRIP_N */
+ PAD_CFG_GPI(PMIC_STDBY, UP_20K, DEEP) /* unused */
+ PAD_CFG_NF(PROCHOT_B, UP_20K, DEEP, NF1) /* PROCHOT_N */
+ PAD_CFG_NF(PMIC_I2C_SCL, UP_1K, DEEP, NF1) /* PMIC_I2C_SCL */
+ PAD_CFG_NF(PMIC_I2C_SDA, UP_1K, DEEP, NF1) /* PMIC_I2C_SDA */
+
+ /* I2S1 -- largely unused */
+ PAD_CFG_GPI(GPIO_74, UP_20K, DEEP) /* I2S1_MCLK */
+ PAD_CFG_GPI(GPIO_75, UP_20K, DEEP) /* I2S1_BCLK -- PCH_WP */
+ PAD_CFG_GPO(GPIO_76, 0, DEEP) /* I2S1_WS_SYNC -- SPK_PA_EN */
+ PAD_CFG_GPI(GPIO_77, UP_20K, DEEP) /* I2S1_SDI */
+ PAD_CFG_GPO(GPIO_78, 1, DEEP) /* I2S1_SDO -- EN_PP3300_DX_LTE_SOC */
+
+ /* DMIC or I2S4 */
+ /* AVS_DMIC_CLK_A1 */
+ PAD_CFG_NF_IOSSTATE(GPIO_79, NATIVE, DEEP, NF1, IGNORE)
+ PAD_CFG_NF(GPIO_80, NATIVE, DEEP, NF1) /* AVS_DMIC_CLK_B1 */
+ PAD_CFG_NF(GPIO_81, NATIVE, DEEP, NF1) /* AVS_DMIC_DATA_1 */
+ PAD_CFG_GPI(GPIO_82, DN_20K, DEEP) /* unused -- strap */
+ PAD_CFG_NF(GPIO_83, NATIVE, DEEP, NF1) /* AVS_DMIC_DATA_2 */
+
+ /* I2S2 -- Headset amp */
+ PAD_CFG_NF(GPIO_84, NATIVE, DEEP, NF1) /* AVS_I2S2_MCLK */
+ PAD_CFG_NF(GPIO_85, NATIVE, DEEP, NF1) /* AVS_I2S2_BCLK */
+ PAD_CFG_NF(GPIO_86, NATIVE, DEEP, NF1) /* AVS_I2S2_SW_SYNC */
+ PAD_CFG_NF(GPIO_87, NATIVE, DEEP, NF1) /* AVS_I2S2_SDI */
+ PAD_CFG_NF(GPIO_88, NATIVE, DEEP, NF1) /* AVS_I2S2_SDO */
+
+ /* I2S3 -- largely unused */
+ PAD_CFG_GPI(GPIO_89, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_90, UP_20K, DEEP) /* GPS_HOST_WAKE */
+ PAD_CFG_GPO(GPIO_91, 1, DEEP) /* GPS_EN */
+ PAD_CFG_GPI(GPIO_92, DN_20K, DEEP) /* unused -- strap */
+
+ /* Fast SPI */
+ PAD_CFG_NF_IOSSTATE(GPIO_97, NATIVE, DEEP, NF1, IGNORE) /* FST_SPI_CS0_B */
+ PAD_CFG_GPI(GPIO_98, UP_20K, DEEP) /* FST_SPI_CS1_B -- unused */
+ PAD_CFG_NF_IOSSTATE(GPIO_99, NATIVE, DEEP, NF1, IGNORE) /* FST_SPI_MOSI_IO0 */
+ PAD_CFG_NF_IOSSTATE(GPIO_100, NATIVE, DEEP, NF1, IGNORE) /* FST_SPI_MISO_IO1 */
+ PAD_CFG_GPI(GPIO_101, NONE, DEEP) /* FST_IO2 -- MEM_CONFIG0 */
+ PAD_CFG_GPI(GPIO_102, NONE, DEEP) /* FST_IO3 -- MEM_CONFIG1 */
+ PAD_CFG_NF_IOSSTATE(GPIO_103, NATIVE, DEEP, NF1, IGNORE) /* FST_SPI_CLK */
+ PAD_CFG_NF_IOSSTATE(FST_SPI_CLK_FB, NATIVE, DEEP, NF1, IGNORE) /* FST_SPI_CLK_FB */
+ PAD_CFG_NF_IOSSTATE(GPIO_106, NATIVE, DEEP, NF3, IGNORE) /* FST_SPI_CS2_N */
+
+ /* SIO_SPI_0 - Used for FP */
+ PAD_CFG_NF(GPIO_104, NATIVE, DEEP, NF1) /* SIO_SPI_0_CLK */
+ PAD_CFG_NF(GPIO_105, NATIVE, DEEP, NF1) /* SIO_SPI_0_FS0 */
+ PAD_CFG_NF(GPIO_109, NATIVE, DEEP, NF1) /* SIO_SPI_0_RXD */
+ PAD_CFG_NF(GPIO_110, NATIVE, DEEP, NF1) /* SIO_SPI_0_TXD */
+
+ /* SIO_SPI_1 -- largely unused */
+ PAD_CFG_GPI(GPIO_111, UP_20K, DEEP) /* SIO_SPI_1_CLK */
+ PAD_CFG_GPI(GPIO_112, UP_20K, DEEP) /* SIO_SPI_1_FS0 */
+ PAD_CFG_GPI(GPIO_113, UP_20K, DEEP) /* SIO_SPI_1_FS1 */
+ /* Headset interrupt */
+ PAD_CFG_GPI_APIC_LOW(GPIO_116, NONE, DEEP) /* SIO_SPI_1_RXD */
+ PAD_CFG_GPI(GPIO_117, UP_20K, DEEP) /* SIO_SPI_1_TXD */
+
+ /* SIO_SPI_2 -- unused */
+ PAD_CFG_GPI(GPIO_118, UP_20K, DEEP) /* SIO_SPI_2_CLK */
+ PAD_CFG_GPI(GPIO_119, UP_20K, DEEP) /* SIO_SPI_2_FS0 */
+ PAD_CFG_GPI(GPIO_120, UP_20K, DEEP) /* SIO_SPI_2_FS1 */
+ PAD_CFG_GPI(GPIO_121, UP_20K, DEEP) /* SIO_SPI_2_FS2 */
+ /* WLAN_PE_RST - default to deasserted */
+ PAD_CFG_GPO(GPIO_122, 0, DEEP) /* SIO_SPI_2_RXD */
+ PAD_CFG_GPI(GPIO_123, UP_20K, DEEP) /* SIO_SPI_2_TXD */
+
+ /* Debug tracing */
+ PAD_CFG_GPI(GPIO_0, UP_20K, DEEP)
+ PAD_CFG_GPI(GPIO_1, UP_20K, DEEP)
+ PAD_CFG_GPI(GPIO_2, UP_20K, DEEP)
+ PAD_CFG_GPI_SCI_HIGH(GPIO_3, DN_20K, DEEP, LEVEL) /* FP_INT */
+ PAD_CFG_GPI(GPIO_4, UP_20K, DEEP)
+ PAD_CFG_GPI(GPIO_5, UP_20K, DEEP)
+ PAD_CFG_GPI(GPIO_6, UP_20K, DEEP)
+ PAD_CFG_GPI(GPIO_7, UP_20K, DEEP)
+ PAD_CFG_GPI(GPIO_8, UP_20K, DEEP)
+
+ PAD_CFG_GPI_APIC_LOW(GPIO_9, NONE, DEEP) /* dTPM IRQ */
+ PAD_CFG_GPI(GPIO_10, DN_20K, DEEP) /* Board phase enforcement */
+ PAD_CFG_GPI_SCI_LOW(GPIO_11, NONE, DEEP, EDGE_SINGLE) /* EC SCI */
+ PAD_CFG_GPI(GPIO_12, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI_APIC_LOW(GPIO_13, NONE, DEEP) /* PEN_INT_ODL */
+ PAD_CFG_GPI_APIC_HIGH(GPIO_14, DN_20K, DEEP) /* FP_INT */
+ PAD_CFG_GPI_SCI_LOW(GPIO_15, NONE, DEEP, EDGE_SINGLE) /* TRACKPAD_INT_1V8_ODL */
+ PAD_CFG_GPI(GPIO_16, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_17, UP_20K, DEEP) /* 1 vs 4 DMIC config */
+ PAD_CFG_GPI_APIC_LOW(GPIO_18, NONE, DEEP) /* Trackpad IRQ */
+ PAD_CFG_GPI(GPIO_19, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI_APIC_LOW(GPIO_20, UP_20K, DEEP) /* NFC IRQ */
+ PAD_CFG_GPI_APIC_LOW(GPIO_21, NONE, DEEP) /* Touch IRQ */
+ PAD_CFG_GPI_SCI_LOW(GPIO_22, NONE, DEEP, EDGE_SINGLE) /* EC wake */
+ PAD_CFG_GPI(GPIO_23, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_24, NONE, DEEP) /* PEN_PDCT_ODL */
+ PAD_CFG_GPI(GPIO_25, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_26, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI(GPIO_27, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPI_APIC_LOW(GPIO_28, NONE, DEEP) /* TPM IRQ */
+ PAD_CFG_GPO(GPIO_29, 1, DEEP) /* FP reset */
+ PAD_CFG_GPI_APIC_LOW(GPIO_30, NONE, DEEP) /* KB IRQ */
+ PAD_CFG_GPO(GPIO_31, 0, DEEP) /* NFC FW DL */
+ PAD_CFG_NF(GPIO_32, NONE, DEEP, NF5) /* SUS_CLK2 */
+ PAD_CFG_GPI_APIC_LOW(GPIO_33, NONE, DEEP) /* PMIC IRQ */
+ PAD_CFG_GPI(GPIO_34, UP_20K, DEEP) /* unused */
+ PAD_CFG_GPO(GPIO_35, 0, DEEP) /* PEN_RESET - active high */
+ PAD_CFG_GPO(GPIO_36, 0, DEEP) /* touch reset */
+ PAD_CFG_GPI(GPIO_37, UP_20K, DEEP) /* unused */
+
+ /* LPSS_UART[0:2] */
+ PAD_CFG_GPI(GPIO_38, NONE, DEEP) /* LPSS_UART0_RXD - MEM_CONFIG2*/
+ /* Next 2 are straps */
+ PAD_CFG_GPI(GPIO_39, DN_20K, DEEP) /* LPSS_UART0_TXD - unused */
+ PAD_CFG_GPI(GPIO_40, DN_20K, DEEP) /* LPSS_UART0_RTS - unused */
+ PAD_CFG_GPI(GPIO_41, NONE, DEEP) /* LPSS_UART0_CTS - EC_IN_RW */
+ PAD_CFG_NF(GPIO_42, NATIVE, DEEP, NF1) /* LPSS_UART1_RXD */
+ PAD_CFG_NF(GPIO_43, NATIVE, DEEP, NF1) /* LPSS_UART1_TXD */
+ PAD_CFG_GPO(GPIO_44, 1, DEEP) /* GPS_RST_ODL */
+ PAD_CFG_GPI(GPIO_45, NONE, DEEP) /* LPSS_UART1_CTS - MEM_CONFIG3 */
+ PAD_CFG_NF(GPIO_46, NATIVE, DEEP, NF1) /* LPSS_UART2_RXD */
+ PAD_CFG_NF_IOSSTATE(GPIO_47, NATIVE, DEEP, NF1, TX1_RX_DCR_X0) /* UART2 TX */
+ PAD_CFG_GPI(GPIO_48, UP_20K, DEEP) /* LPSS_UART2_RTS - unused */
+ PAD_CFG_GPI_SMI_LOW(GPIO_49, NONE, DEEP, EDGE_SINGLE) /* LPSS_UART2_CTS - EC_SMI_L */
+
+ /* Camera interface -- completely unused */
+ PAD_CFG_GPI(GPIO_62, UP_20K, DEEP) /* GP_CAMERASB00 */
+ PAD_CFG_GPI(GPIO_63, UP_20K, DEEP) /* GP_CAMERASB01 */
+ PAD_CFG_GPI(GPIO_64, UP_20K, DEEP) /* GP_CAMERASB02 */
+ PAD_CFG_GPI(GPIO_65, UP_20K, DEEP) /* GP_CAMERASB03 */
+ PAD_CFG_GPI(GPIO_66, UP_20K, DEEP) /* GP_CAMERASB04 */
+ PAD_CFG_GPI(GPIO_67, UP_20K, DEEP) /* GP_CAMERASB05 */
+ PAD_CFG_GPI(GPIO_68, UP_20K, DEEP) /* GP_CAMERASB06 */
+ PAD_CFG_GPI(GPIO_69, UP_20K, DEEP) /* GP_CAMERASB07 */
+ PAD_CFG_GPI(GPIO_70, UP_20K, DEEP) /* GP_CAMERASB08 */
+ PAD_CFG_GPI(GPIO_71, UP_20K, DEEP) /* GP_CAMERASB09 */
+ PAD_CFG_GPI(GPIO_72, UP_20K, DEEP) /* GP_CAMERASB10 */
+ PAD_CFG_GPI(GPIO_73, UP_20K, DEEP) /* GP_CAMERASB11 */
+ >;
+};
--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0+
+.. sectionauthor:: Simon Glass <sjg@chromium.org>
+
+Chromebook Coral
+================
+
+Coral is a Chromebook (or really about 20 different Chromebooks) which use the
+Intel Apollo Lake platform (APL). The 'reef' Chromebooks use the same APL SoC so
+should also work. Some later ones based on Glacier Lake (GLK) need various
+changes in GPIOs, etc. but are very similar.
+
+It is hoped that this port can enable ports to embedded APL boards which are
+starting to appear.
+
+Note that booting U-Boot on APL is already supported by coreboot and
+Slim Bootloader. This documentation refers to a 'bare metal' port.
+
+
+Boot flow - TPL
+---------------
+
+Apollo Lake boots via an IFWI (Integrated Firmware Image). TPL is placed in
+this, in the IBBL entry.
+
+On boot, an on-chip microcontroller called the CSE (Converged Security Engine)
+sets up some SDRAM at ffff8000 and loads the TPL image to that address. The
+SRAM extends up to the top of 32-bit address space, but the last 2KB is the
+start16 region, so the TPL image must be 30KB at most, and CONFIG_TPL_TEXT_BASE
+must be ffff8000. Actually the start16 region is small and it could probably
+move from f800 to fe00, providing another 1.5KB, but TPL is only about 19KB so
+there is no need to change it at present. The size limit is enforced by
+CONFIG_TPL_SIZE_LIMIT to avoid producing images that won't boot.
+
+TPL (running from start.S) first sets up CAR (Cache-as-RAM) which provides
+larger area of RAM for use while booting. CAR is mapped at CONFIG_SYS_CAR_ADDR
+(fef00000) and is 768KB in size. It then sets up the stack in the botttom 64KB
+of this space (i.e. below fef10000). This means that the stack and early
+malloc() region in TPL can be 64KB at most.
+
+TPL operates without CONFIG_TPL_PCI enabled so PCI config access must use the
+x86-specific functions pci_x86_write_config(), etc. SPL creates a simple-bus
+device so that PCI devices are bound by driver model. Then arch_cpu_init_tpl()
+is called to early init on various devices. This includes placing PCI devices
+at hard-coded addresses in the memory map. PCI auto-config is not used.
+
+Most of the 16KB ROM is mapped into the very top of memory, except for the
+Intel descriptor (first 4KB) and the space for SRAM as above.
+
+TPL does not set up a bloblist since at present it does not have anything to
+pass to SPL.
+
+Once TPL is done it loads SPL from ROM using either the memory-mapped SPI or by
+using the Intel fast SPI driver. SPL is loaded into CAR, at the address given
+by CONFIG_SPL_TEXT_BASE, which is normally fef10000.
+
+Note that booting using the SPI driver results in an TPL image that is about
+26KB in size instead of 19KB. Also boot speed is worse by about 340ms. If you
+really want to use the driver, enable CONFIG_APL_SPI_FLASH_BOOT and set
+BOOT_FROM_FAST_SPI_FLASH to true[2].
+
+
+Boot flow - SPL
+---------------
+
+SPL (running from start_from_tpl.S) continues to use the same stack as TPL.
+It calls arch_cpu_init_spl() to set up a few devices, then init_dram() loads
+the FSP-M binary into CAR and runs to, to set up SDRAM. The address of the
+output 'HOB' list (Hand-off-block) is stored into gd->arch.hob_list for parsing.
+There is a 2GB chunk of SDRAM starting at 0 and the rest is at 4GB.
+
+PCI auto-config is not used in SPL either, but CONFIG_SPL_PCI is defined, so
+proper PCI access is available and normal dm_pci_read_config() calls can be
+used. However PCI auto-config is not used so the same static memory mapping set
+up by TPL is still active.
+
+SPL on x86 always runs with CONFIG_SPL_SEPARATE_BSS=y and BSS is at 120000
+(see u-boot-spl.lds). This works because SPL doesn't access BSS until after
+board_init_r(), as per the rules, and DRAM is available then.
+
+SPL sets up a bloblist and passes the SPL hand-off information to U-Boot proper.
+This includes a pointer to the HOB list as well as DRAM information. See
+struct arch_spl_handoff. The bloblist address is set by CONFIG_BLOBLIST_ADDR,
+normally 100000.
+
+SPL uses SPI flash to update the MRC caches in ROM. This speeds up subsequent
+boots. Be warned that SPL can take 30 seconds without this cache! This is a
+known issue with Intel SoCs with modern DRAM and apparently cannot be improved.
+The MRC caches are used to work around this.
+
+Once SPL is finished it loads U-Boot into SDRAM at CONFIG_SYS_TEXT_BASE, which
+is normally 1110000. Note that CAR is still active.
+
+
+Boot flow - U-Boot pre-relocation
+---------------------------------
+
+U-Boot (running from start_from_spl.S) starts running in RAM and uses the same
+stack as SPL. It does various init activities before relocation. Notably
+arch_cpu_init_dm() sets up the pin muxing for the chip using a very large table
+in the device tree.
+
+PCI auto-config is not used before relocation, but CONFIG_PCI of course is
+defined, so proper PCI access is available. The same static memory mapping set
+up by TPL is still active until relocation.
+
+As per usual, U-Boot allocates memory at the top of available RAM (a bit below
+2GB in this case) and copies things there ready to relocate itself. Notably
+reserve_arch() does not reserve space for the HOB list returned by FSP-M since
+this is already located in RAM.
+
+U-Boot then shuts down CAR and jumps to its relocated version.
+
+
+Boot flow - U-Boot post-relocation
+---------------------------------
+
+U-Boot starts up normally, running near the top of RAM. After driver model is
+running, arch_fsp_init_r() is called which loads and runs the FSP-S binary.
+This updates the HOB list to include graphics information, used by the fsp_video
+driver.
+
+PCI autoconfig is done and a few devices are probed to complete init. Most
+others are started only when they are used.
+
+Note that FSP-S is supposed to run after CAR has been shut down, which happens
+immediately before U-Boot starts up in its relocated position. Therefore we
+cannot run FSP-S before relocation. On the other hand we must run it before
+PCI auto-config is done, since FSP-S may show or hide devices. The first device
+that probes PCI after relocation is the serial port, in initr_serial(), so FSP-S
+must run before that. A corollary is that loading FSP-S must be done without
+using the SPI driver, to avoid probing PCI and causing an autoconfig, so
+memory-mapped reading is always used for FSP-S.
+
+It would be possible to tear down CAR in SPL instead of U-Boot. The SPL handoff
+information could make sure it does not include any pointers into CAR (in fact
+it doesn't). But tearing down CAR in U-Boot allows the initial state used by TPL
+and SPL to be read by U-Boot, which seems useful. It also matches how older
+platforms start up (those that don't use SPL).
+
+
+Performance
+-----------
+
+Bootstage is used through all phases of U-Boot to keep accurate timimgs for
+boot. Use 'bootstage report' in U-Boot to see the report, e.g.:
+
+Timer summary in microseconds (16 records):
+ Mark Elapsed Stage
+ 0 0 reset
+ 155,325 155,325 TPL
+ 204,014 48,689 end TPL
+ 204,385 371 SPL
+ 738,633 534,248 end SPL
+ 739,161 528 board_init_f
+ 842,764 103,603 board_init_r
+ 1,166,233 323,469 main_loop
+ 1,166,283 50 id=175
+
+Accumulated time:
+ 62 fast_spi
+ 202 dm_r
+ 7,779 dm_spl
+ 15,555 dm_f
+ 208,357 fsp-m
+ 239,847 fsp-s
+ 292,143 mmap_spi
+
+CPU performance is about 3500 DMIPS:
+
+=> dhry
+1000000 iterations in 161 ms: 6211180/s, 3535 DMIPS
+
+
+Partial memory map
+------------------
+
+ffffffff Top of ROM (and last byte of 32-bit address space)
+ffff8000 TPL loaded here (from IFWI)
+ff000000 Bottom of ROM
+fefc000 Top of CAR region
+fef96000 Stack for FSP-M
+fef40000 59000 FSP-M
+fef11000 SPL loaded here
+fef10000 CONFIG_BLOBLIST_ADDR
+fef10000 Stack top in TPL, SPL and U-Boot before relocation
+fef00000 1000 CONFIG_BOOTSTAGE_STASH_ADDR
+fef00000 Base of CAR region
+
+ f0000 CONFIG_ROM_TABLE_ADDR
+ 120000 BSS (defined in u-boot-spl.lds)
+ 200000 FSP-S (which is run after U-Boot is relocated)
+ 1110000 CONFIG_SYS_TEXT_BASE
+
+
+Supported peripherals
+---------------------
+
+- UART
+- SPI flash
+- Video
+- MMC (dev 0) and micro-SD (dev 1)
+- Chrome OS EC
+- Keyboard
+- USB
+
+
+To do
+-----
+
+- Finish peripherals
+ - left-side USB
+ - USB-C
+ - Cr50 (security chip: a basic driver is running but not included here)
+ - I2C (driver exists but not enabled in device tree)
+ - Sound (Intel I2S support exists, but need da7219 driver)
+ - RTC (driver exists but not enabled in device tree)
+ - Various minor features supported by LPC, etc.
+- Booting Chrome OS, e.g. with verified boot
+- Integrate with Chrome OS vboot
+- Improvements to booting from coreboot (i.e. as a coreboot target)
+- Use FSP-T binary instead of our own CAR implementation
+- Use the official FSP package instead of the coreboot one
+- Enable all CPU cores
+- Suspend / resume
+- ACPI
+
+
+Credits
+-------
+
+This is a spare-time project conducted slowly over a long period of time.
+
+Much of the code for this port came from Coreboot, an open-source firmware
+project similar to U-Boot's SPL in terms of features.
+
+Also see [2] for information about the boot flow used by coreboot. It is
+similar, but has an extra postcar stage. U-Boot doesn't need this since it
+supports relocating itself in memory.
+
+
+[2] Intel PDF https://www.coreboot.org/images/2/23/Apollolake_SoC.pdf
projects / oweals / u-boot.git / commitdiff