arm64: dts: rockchip: add Gru/Kevin DTS

Kevin is part of a family of boards called Gru. As best as possible, the
properties shared by the Gru family are placed in rk3399-gru.dtsi, while
Kevin-specific bits are in rk3399-gru-kevin.dts. This does not add full
support for the base Gru board.

Working and tested (to some extent):
 * EC support -- including keyboard, battery, PWM, and probably more
 * UART / console
 * Thermal
 * Touchscreen
 * Touchpad
 * Digitizer (regulator still WIP)
 * PCIe / Wifi
 * Bluetooth / Webcam
 * SD card
 * eMMC
 * USB2 on TypeC
   - This works much of the time, but USB3 devices may or may not detect
     properly. Waiting on proper extcon support for USB3 over TypeC.
   - Depends on XHCI/DWC3 fixes for ARM64 that still haven't landed
 * Backlight

Not working:
 * CPUFreq -- relies on special OVP support for our PWM regulator
   circuits
 * EC / extcon support -- and with it, USB3/TypeC/DP
 * DRM -- won't even build on ARM64, so all display, eDP, etc. is not
   enabled

Not tested:
 * Audio

Signed-off-by: Brian Norris <briannorris@chromium.org>
[shared gru/kevin parts on a gru device]
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
[with a bit of reordering]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

3 files changed, 1267 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 3a862894ea44..b82f7b61ab6f 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-orion-r68-meta.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-px5-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-r88.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-evb.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-kevin.dtb
 
 always          := $(dtb-y)
 subdir-y        := $(dts-dirs)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
new file mode 100644
index 000000000000..fd24071320be
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
@@ -0,0 +1,302 @@
+/*
+ * Google Gru-Kevin Rev 6+ board device tree source
+ *
+ * Copyright 2016-2017 Google, Inc
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *  Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+#include "rk3399-gru.dtsi"
+#include <include/dt-bindings/input/linux-event-codes.h>
+
+/*
+ * Kevin-specific things
+ *
+ * Things in this section should use names from Kevin schematic since no
+ * equivalent exists in Gru schematic.  If referring to signals that exist
+ * in Gru we use the Gru names, though.  Confusing enough for you?
+ */
+/ {
+        model = "Google Kevin";
+        compatible = "google,kevin-rev15", "google,kevin-rev14",
+                     "google,kevin-rev13", "google,kevin-rev12",
+                     "google,kevin-rev11", "google,kevin-rev10",
+                     "google,kevin-rev9", "google,kevin-rev8",
+                     "google,kevin-rev7", "google,kevin-rev6",
+                     "google,kevin", "google,gru", "rockchip,rk3399";
+
+        /* Power tree */
+
+        p3_3v_dig: p3-3v-dig {
+                compatible = "regulator-fixed";
+                regulator-name = "p3.3v_dig";
+                pinctrl-names = "default";
+                pinctrl-0 = <&cpu3_pen_pwr_en>;
+
+                enable-active-high;
+                gpio = <&gpio4 30 GPIO_ACTIVE_HIGH>;
+                vin-supply = <&pp3300>;
+        };
+
+        backlight: backlight {
+                compatible = "pwm-backlight";
+                pwms = <&cros_ec_pwm 1>;
+                brightness-levels = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
+                                     17 18 19 20 21 22 23 24 25 26 27 28 29 30
+                                     31 32 33 34 35 36 37 38 39 40 41 42 43 44
+                                     45 46 47 48 49 50 51 52 53 54 55 56 57 58
+                                     59 60 61 62 63 64 65 66 67 68 69 70 71 72
+                                     73 74 75 76 77 78 79 80 81 82 83 84 85 86
+                                     87 88 89 90 91 92 93 94 95 96 97 98 99 100>;
+                default-brightness-level = <51>;
+                enable-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>;
+                power-supply = <&pp3300_disp>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&bl_en>;
+                pwm-delay-us = <10000>;
+        };
+
+        thermistor_ppvar_bigcpu: thermistor-ppvar-bigcpu {
+                compatible = "murata,ncp15wb473";
+                pullup-uv = <1800000>;
+                pullup-ohm = <25500>;
+                pulldown-ohm = <0>;
+                io-channels = <&saradc 2>;
+                #thermal-sensor-cells = <0>;
+        };
+
+        thermistor_ppvar_litcpu: thermistor-ppvar-litcpu {
+                compatible = "murata,ncp15wb473";
+                pullup-uv = <1800000>;
+                pullup-ohm = <25500>;
+                pulldown-ohm = <0>;
+                io-channels = <&saradc 3>;
+                #thermal-sensor-cells = <0>;
+        };
+};
+
+&gpio_keys {
+        pinctrl-names = "default";
+        pinctrl-0 = <&bt_host_wake_l>, <&cpu1_pen_eject>;
+
+        pen-insert {
+                label = "Pen Insert";
+                /* Insert = low, eject = high */
+                gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+                linux,code = <SW_PEN_INSERTED>;
+                linux,input-type = <EV_SW>;
+                wakeup-source;
+        };
+};
+
+&thermal_zones {
+        bigcpu_reg_thermal: bigcpu-reg-thermal {
+                polling-delay-passive = <100>; /* milliseconds */
+                polling-delay = <1000>; /* milliseconds */
+                thermal-sensors = <&thermistor_ppvar_bigcpu 0>;
+                sustainable-power = <4000>;
+
+                ppvar_bigcpu_trips: trips {
+                        ppvar_bigcpu_on: ppvar-bigcpu-on {
+                                temperature = <40000>;  /* millicelsius */
+                                hysteresis = <2000>;    /* millicelsius */
+                                type = "passive";
+                        };
+
+                        ppvar_bigcpu_alert: ppvar-bigcpu-alert {
+                                temperature = <50000>;  /* millicelsius */
+                                hysteresis = <2000>;    /* millicelsius */
+                                type = "passive";
+                        };
+
+                        ppvar_bigcpu_crit: ppvar-bigcpu-crit {
+                                temperature = <90000>;  /* millicelsius */
+                                hysteresis = <0>;       /* millicelsius */
+                                type = "critical";
+                        };
+                };
+
+                cooling-maps {
+                        map0 {
+                                trip = <&ppvar_bigcpu_alert>;
+                                cooling-device =
+                                        <&cpu_l0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                                contribution = <4096>;
+                        };
+                        map1 {
+                                trip = <&ppvar_bigcpu_alert>;
+                                cooling-device =
+                                        <&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                                contribution = <1024>;
+                        };
+                };
+        };
+
+        litcpu_reg_thermal: litcpu-reg-thermal {
+                polling-delay-passive = <100>; /* milliseconds */
+                polling-delay = <1000>; /* milliseconds */
+                thermal-sensors = <&thermistor_ppvar_litcpu 0>;
+                sustainable-power = <4000>;
+
+                ppvar_litcpu_trips: trips {
+                        ppvar_litcpu_on: ppvar-litcpu-on {
+                                temperature = <40000>;  /* millicelsius */
+                                hysteresis = <2000>;    /* millicelsius */
+                                type = "passive";
+                        };
+
+                        ppvar_litcpu_alert: ppvar-litcpu-alert {
+                                temperature = <50000>;  /* millicelsius */
+                                hysteresis = <2000>;    /* millicelsius */
+                                type = "passive";
+                        };
+
+                        ppvar_litcpu_crit: ppvar-litcpu-crit {
+                                temperature = <90000>;  /* millicelsius */
+                                hysteresis = <0>;       /* millicelsius */
+                                type = "critical";
+                        };
+                };
+        };
+};
+
+ap_i2c_tpm: &i2c0 {
+        status = "okay";
+
+        clock-frequency = <400000>;
+
+        /* These are relatively safe rise/fall times. */
+        i2c-scl-falling-time-ns = <50>;
+        i2c-scl-rising-time-ns = <300>;
+
+        tpm: tpm@20 {
+                compatible = "infineon,slb9645tt";
+                reg = <0x20>;
+                powered-while-suspended;
+        };
+};
+
+ap_i2c_dig: &i2c2 {
+        status = "okay";
+
+        clock-frequency = <400000>;
+
+        /* These are relatively safe rise/fall times. */
+        i2c-scl-falling-time-ns = <50>;
+        i2c-scl-rising-time-ns = <300>;
+
+        digitizer: digitizer@9 {
+                compatible = "hid-over-i2c";
+                reg = <0x9>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&cpu1_dig_irq_l &cpu1_dig_pdct_l>;
+
+                interrupt-parent = <&gpio2>;
+                interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
+
+                hid-descr-addr = <0x1>;
+        };
+};
+
+/* Adjustments to things in the gru baseboard */
+
+&ap_i2c_tp {
+        trackpad@4a {
+                compatible = "atmel,atmel_mxt_tp";
+                reg = <0x4a>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&trackpad_int_l>;
+                interrupt-parent = <&gpio1>;
+                interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
+                wakeup-source;
+        };
+};
+
+&ap_i2c_ts {
+        touchscreen@4b {
+                compatible = "atmel,atmel_mxt_ts";
+                reg = <0x4b>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&touch_int_l>;
+                interrupt-parent = <&gpio3>;
+                interrupts = <13 IRQ_TYPE_LEVEL_LOW>;
+        };
+};
+
+&saradc {
+        status = "okay";
+        vref-supply = <&pp1800_ap_io>;
+};
+
+&mvl_wifi {
+        marvell,wakeup-pin = <14>; /* GPIO_14 on Marvell */
+};
+
+&pinctrl {
+        digitizer {
+                /* Has external pullup */
+                cpu1_dig_irq_l: cpu1-dig-irq-l {
+                        rockchip,pins = <2 4 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+
+                /* Has external pullup */
+                cpu1_dig_pdct_l: cpu1-dig-pdct-l {
+                        rockchip,pins = <2 5 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+
+        discrete-regulators {
+                cpu3_pen_pwr_en: cpu3-pen-pwr-en {
+                        rockchip,pins = <4 30 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+
+        pen {
+                cpu1_pen_eject: cpu1-pen-eject {
+                        rockchip,pins = <0 13 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+        };
+
+        wifi {
+                wlan_host_wake_l: wlan-host-wake-l {
+                        rockchip,pins = <0 8 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+};
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
new file mode 100644
index 000000000000..1a57014a7b59
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
@@ -0,0 +1,964 @@
+/*
+ * Google Gru (and derivatives) board device tree source
+ *
+ * Copyright 2016-2017 Google, Inc
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *  Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <dt-bindings/input/input.h>
+#include "rk3399.dtsi"
+
+/ {
+        chosen {
+                stdout-path = "serial2:115200n8";
+        };
+
+        /*
+         * Power Tree
+         *
+         * In general an attempt is made to include all rails called out by
+         * the schematic as long as those rails interact in some way with
+         * the AP.  AKA:
+         * - Rails that only connect to the EC (or devices that the EC talks to)
+         *   are not included.
+         * - Rails _are_ included if the rails go to the AP even if the AP
+         *   doesn't currently care about them / they are always on.  The idea
+         *   here is that it makes it easier to map to the schematic or extend
+         *   later.
+         *
+         * If two rails are substantially the same from the AP's point of
+         * view, though, we won't create a full fixed regulator.  We'll just
+         * put the child rail as an alias of the parent rail.  Sometimes rails
+         * look the same to the AP because one of these is true:
+         * - The EC controls the enable and the EC always enables a rail as
+         *   long as the AP is running.
+         * - The rails are actually connected to each other by a jumper and
+         *   the distinction is just there to add clarity/flexibility to the
+         *   schematic.
+         */
+
+        ppvar_sys: ppvar-sys {
+                compatible = "regulator-fixed";
+                regulator-name = "ppvar_sys";
+                regulator-always-on;
+                regulator-boot-on;
+        };
+
+        pp900_ap: pp900-ap {
+                compatible = "regulator-fixed";
+                regulator-name = "pp900_ap";
+
+                /* EC turns on w/ pp900_ap_en; always on for AP */
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <900000>;
+                regulator-max-microvolt = <900000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        pp1200_lpddr: pp1200-lpddr {
+                compatible = "regulator-fixed";
+                regulator-name = "pp1200_lpddr";
+
+                /* EC turns on w/ lpddr_pwr_en; always on for AP */
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <1200000>;
+                regulator-max-microvolt = <1200000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        pp1800: pp1800 {
+                compatible = "regulator-fixed";
+                regulator-name = "pp1800";
+
+                /* Always on when ppvar_sys shows power good */
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <1800000>;
+                regulator-max-microvolt = <1800000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        pp3000: pp3000 {
+                compatible = "regulator-fixed";
+                regulator-name = "pp3000";
+                pinctrl-names = "default";
+                pinctrl-0 = <&pp3000_en>;
+
+                enable-active-high;
+                gpio = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <3000000>;
+                regulator-max-microvolt = <3000000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        pp3300: pp3300 {
+                compatible = "regulator-fixed";
+                regulator-name = "pp3300";
+
+                /* Always on; plain and simple */
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <3300000>;
+                regulator-max-microvolt = <3300000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        pp5000: pp5000 {
+                compatible = "regulator-fixed";
+                regulator-name = "pp5000";
+
+                /* EC turns on w/ pp5000_en; always on for AP */
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <5000000>;
+                regulator-max-microvolt = <5000000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        /* Schematics call this PPVAR even though it's fixed */
+        ppvar_logic: ppvar-logic {
+                compatible = "regulator-fixed";
+                regulator-name = "ppvar_logic";
+
+                /* EC turns on w/ ppvar_logic_en; always on for AP */
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <900000>;
+                regulator-max-microvolt = <900000>;
+
+                vin-supply = <&ppvar_sys>;
+        };
+
+        /* EC turns on w/ pp900_ddrpll_en */
+        pp900_ddrpll: pp900-ap {
+        };
+
+        /* EC turns on w/ pp900_pcie_en */
+        pp900_pcie: pp900-ap {
+        };
+
+        /* EC turns on w/ pp900_pll_en */
+        pp900_pll: pp900-ap {
+        };
+
+        /* EC turns on w/ pp900_pmu_en */
+        pp900_pmu: pp900-ap {
+        };
+
+        /* EC turns on w/ pp900_usb_en */
+        pp900_usb: pp900-ap {
+        };
+
+        /* EC turns on w/ pp1800_s0_en_l */
+        pp1800_ap_io: pp1800_emmc: pp1800_nfc: pp1800_s0: pp1800 {
+        };
+
+        /* EC turns on w/ pp1800_avdd_en_l */
+        pp1800_avdd: pp1800 {
+        };
+
+        /* EC turns on w/ pp1800_lid_en_l */
+        pp1800_lid: pp1800_mic: pp1800 {
+        };
+
+        /* EC turns on w/ lpddr_pwr_en */
+        pp1800_lpddr: pp1800 {
+        };
+
+        /* EC turns on w/ pp1800_pmu_en_l */
+        pp1800_pmu: pp1800 {
+        };
+
+        /* EC turns on w/ pp1800_usb_en_l */
+        pp1800_usb: pp1800 {
+        };
+
+        pp1500_ap_io: pp1500-ap-io {
+                compatible = "regulator-fixed";
+                regulator-name = "pp1500_ap_io";
+                pinctrl-names = "default";
+                pinctrl-0 = <&pp1500_en>;
+
+                enable-active-high;
+                gpio = <&gpio0 10 GPIO_ACTIVE_HIGH>;
+
+                regulator-always-on;
+                regulator-boot-on;
+                regulator-min-microvolt = <1500000>;
+                regulator-max-microvolt = <1500000>;
+
+                vin-supply = <&pp1800>;
+        };
+
+        pp1800_audio: pp1800-audio {
+                compatible = "regulator-fixed";
+                regulator-name = "pp1800_audio";
+                pinctrl-names = "default";
+                pinctrl-0 = <&pp1800_audio_en>;
+
+                enable-active-high;
+                gpio = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+
+                regulator-always-on;
+                regulator-boot-on;
+
+                vin-supply = <&pp1800>;
+        };
+
+        /* gpio is shared with pp3300_wifi_bt */
+        pp1800_pcie: pp1800-pcie {
+                compatible = "regulator-fixed";
+                regulator-name = "pp1800_pcie";
+                pinctrl-names = "default";
+                pinctrl-0 = <&wlan_module_pd_l>;
+
+                enable-active-high;
+                gpio = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+
+                /*
+                 * Need to wait 1ms + ramp-up time before we can power on WiFi.
+                 * This has been approximated as 8ms total.
+                 */
+                regulator-enable-ramp-delay = <8000>;
+
+                vin-supply = <&pp1800>;
+        };
+
+        /*
+         * This is a bit of a hack. The WiFi module should be reset at least
+         * 1ms after its regulators have ramped up (max rampup time is ~7ms).
+         * With some stretching of the imagination, we can call the 1.8V
+         * regulator a supply.
+         */
+        wlan_pd_n: wlan-pd-n {
+                compatible = "regulator-fixed";
+                regulator-name = "wlan_pd_n";
+
+                /* Note the wlan_module_reset_l pinctrl */
+                enable-active-high;
+                gpio = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+
+                vin-supply = <&pp1800_pcie>;
+        };
+
+        /* Always on; plain and simple */
+        pp3000_ap: pp3000_emmc: pp3000 {
+        };
+
+        pp3000_sd_slot: pp3000-sd-slot {
+                compatible = "regulator-fixed";
+                regulator-name = "pp3000_sd_slot";
+                pinctrl-names = "default";
+                pinctrl-0 = <&sd_slot_pwr_en>;
+
+                enable-active-high;
+                gpio = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+
+                vin-supply = <&pp3000>;
+        };
+
+        /*
+         * Technically, this is a small abuse of 'regulator-gpio'; this
+         * regulator is a mux between pp1800 and pp3300. pp1800 and pp3300 are
+         * always on though, so it is sufficient to simply control the mux
+         * here.
+         */
+        ppvar_sd_card_io: ppvar-sd-card-io {
+                compatible = "regulator-gpio";
+                regulator-name = "ppvar_sd_card_io";
+                pinctrl-names = "default";
+                pinctrl-0 = <&sd_io_pwr_en &sd_pwr_1800_sel>;
+
+                enable-active-high;
+                enable-gpio = <&gpio2 2 GPIO_ACTIVE_HIGH>;
+                gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>;
+                states = <1800000 0x1
+                          3000000 0x0>;
+
+                regulator-min-microvolt = <1800000>;
+                regulator-max-microvolt = <3000000>;
+        };
+
+        /* EC turns on w/ pp3300_trackpad_en_l */
+        pp3300_trackpad: pp3300-trackpad {
+        };
+
+        /* EC turns on w/ pp3300_usb_en_l */
+        pp3300_usb: pp3300 {
+        };
+
+        pp3300_disp: pp3300-disp {
+                compatible = "regulator-fixed";
+                regulator-name = "pp3300_disp";
+                pinctrl-names = "default";
+                pinctrl-0 = <&pp3300_disp_en>;
+
+                enable-active-high;
+                gpio = <&gpio4 27 GPIO_ACTIVE_HIGH>;
+
+                startup-delay-us = <2000>;
+                vin-supply = <&pp3300>;
+        };
+
+        /* gpio is shared with pp1800_pcie and pinctrl is set there */
+        pp3300_wifi_bt: pp3300-wifi-bt {
+                compatible = "regulator-fixed";
+                regulator-name = "pp3300_wifi_bt";
+
+                enable-active-high;
+                gpio = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+
+                vin-supply = <&pp3300>;
+        };
+
+        /* EC turns on w/ usb_a_en */
+        pp5000_usb_a_vbus: pp5000 {
+        };
+
+        gpio_keys: gpio-keys {
+                compatible = "gpio-keys";
+                pinctrl-names = "default";
+                pinctrl-0 = <&bt_host_wake_l>;
+
+                wake-on-bt {
+                        label = "Wake-on-Bluetooth";
+                        gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
+                        linux,code = <KEY_WAKEUP>;
+                        wakeup-source;
+                };
+        };
+
+        max98357a: max98357a {
+                compatible = "maxim,max98357a";
+                pinctrl-names = "default";
+                pinctrl-0 = <&sdmode_en>;
+                sdmode-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+                sdmode-delay = <2>;
+                #sound-dai-cells = <0>;
+                status = "okay";
+        };
+
+        sound {
+                compatible = "rockchip,rk3399-gru-sound";
+                rockchip,cpu = <&i2s0 &i2s2>;
+                rockchip,codec = <&max98357a &headsetcodec &codec>;
+        };
+};
+
+&cru {
+        assigned-clocks =
+                <&cru PLL_GPLL>, <&cru PLL_CPLL>,
+                <&cru PLL_NPLL>,
+                <&cru ACLK_PERIHP>, <&cru HCLK_PERIHP>,
+                <&cru PCLK_PERIHP>,
+                <&cru ACLK_PERILP0>, <&cru HCLK_PERILP0>,
+                <&cru PCLK_PERILP0>, <&cru ACLK_CCI>,
+                <&cru HCLK_PERILP1>, <&cru PCLK_PERILP1>;
+        assigned-clock-rates =
+                <600000000>, <800000000>,
+                <1000000000>,
+                <150000000>, <75000000>,
+                <37500000>,
+                <100000000>, <100000000>,
+                <50000000>, <800000000>,
+                <100000000>, <50000000>;
+};
+
+&emmc_phy {
+        status = "okay";
+};
+
+ap_i2c_mic: &i2c1 {
+        status = "okay";
+
+        clock-frequency = <400000>;
+
+        /* These are relatively safe rise/fall times */
+        i2c-scl-falling-time-ns = <50>;
+        i2c-scl-rising-time-ns = <300>;
+
+        headsetcodec: rt5514@57 {
+                compatible = "realtek,rt5514";
+                reg = <0x57>;
+                interrupt-parent = <&gpio1>;
+                interrupts = <13 IRQ_TYPE_LEVEL_HIGH>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&mic_int>;
+                realtek,dmic-init-delay = <20>;
+                wakeup-source;
+        };
+};
+
+ap_i2c_ts: &i2c3 {
+        status = "okay";
+
+        clock-frequency = <400000>;
+
+        /* These are relatively safe rise/fall times */
+        i2c-scl-falling-time-ns = <50>;
+        i2c-scl-rising-time-ns = <300>;
+};
+
+ap_i2c_tp: &i2c5 {
+        status = "okay";
+
+        clock-frequency = <400000>;
+
+        /* These are relatively safe rise/fall times */
+        i2c-scl-falling-time-ns = <50>;
+        i2c-scl-rising-time-ns = <300>;
+
+        /*
+         * Note strange pullup enable.  Apparently this avoids leakage but
+         * still allows us to get nice 4.7K pullups for high speed i2c
+         * transfers.  Basically we want the pullup on whenever the ap is
+         * alive, so the "en" pin just gets set to output high.
+         */
+        pinctrl-0 = <&i2c5_xfer &ap_i2c_tp_pu_en>;
+};
+
+ap_i2c_audio: &i2c8 {
+        status = "okay";
+
+        clock-frequency = <400000>;
+
+        /* These are relatively safe rise/fall times */
+        i2c-scl-falling-time-ns = <50>;
+        i2c-scl-rising-time-ns = <300>;
+
+        codec: da7219@1a {
+                compatible = "dlg,da7219";
+                reg = <0x1a>;
+                interrupt-parent = <&gpio1>;
+                interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+                clocks = <&cru SCLK_I2S_8CH_OUT>;
+                clock-names = "mclk";
+                dlg,micbias-lvl = <2600>;
+                dlg,mic-amp-in-sel = "diff";
+                pinctrl-names = "default";
+                pinctrl-0 = <&headset_int_l>;
+                VDD-supply = <&pp1800>;
+                VDDMIC-supply = <&pp3300>;
+                VDDIO-supply = <&pp1800>;
+
+                da7219_aad {
+                        dlg,adc-1bit-rpt = <1>;
+                        dlg,btn-avg = <4>;
+                        dlg,btn-cfg = <50>;
+                        dlg,mic-det-thr = <500>;
+                        dlg,jack-ins-deb = <20>;
+                        dlg,jack-det-rate = "32ms_64ms";
+                        dlg,jack-rem-deb = <1>;
+
+                        dlg,a-d-btn-thr = <0xa>;
+                        dlg,d-b-btn-thr = <0x16>;
+                        dlg,b-c-btn-thr = <0x21>;
+                        dlg,c-mic-btn-thr = <0x3E>;
+                };
+        };
+};
+
+&i2s0 {
+        status = "okay";
+};
+
+&i2s2 {
+        status = "okay";
+};
+
+&io_domains {
+        status = "okay";
+
+        audio-supply = <&pp1800_audio>;         /* APIO5_VDD;  3d 4a */
+        bt656-supply = <&pp1800_ap_io>;         /* APIO2_VDD;  2a 2b */
+        gpio1830-supply = <&pp3000_ap>;         /* APIO4_VDD;  4c 4d */
+        sdmmc-supply = <&ppvar_sd_card_io>;     /* SDMMC0_VDD; 4b    */
+};
+
+&pcie0 {
+        status = "okay";
+
+        ep-gpios = <&gpio2 27 GPIO_ACTIVE_HIGH>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pcie_clkreqn_cpm>, <&wifi_perst_l>;
+        vpcie3v3-supply = <&pp3300_wifi_bt>;
+        vpcie1v8-supply = <&wlan_pd_n>; /* HACK: see &wlan_pd_n */
+        vpcie0v9-supply = <&pp900_pcie>;
+
+        pci_rootport: pcie@0,0 {
+                reg = <0x83000000 0x0 0x00000000 0x0 0x00000000>;
+                #address-cells = <3>;
+                #size-cells = <2>;
+                ranges;
+
+                mvl_wifi: wifi@0,0 {
+                        compatible = "pci1b4b,2b42";
+                        reg = <0x83010000 0x0 0x00000000 0x0 0x00100000
+                               0x83010000 0x0 0x00100000 0x0 0x00100000>;
+                        interrupt-parent = <&gpio0>;
+                        interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+                        pinctrl-names = "default";
+                        pinctrl-0 = <&wlan_host_wake_l>;
+                        wakeup-source;
+                };
+        };
+};
+
+&pcie_phy {
+        status = "okay";
+};
+
+&pmu_io_domains {
+        status = "okay";
+
+        pmu1830-supply = <&pp1800_pmu>;         /* PMUIO2_VDD */
+};
+
+&pwm0 {
+        status = "okay";
+};
+
+&pwm1 {
+        status = "okay";
+};
+
+&pwm2 {
+        status = "okay";
+};
+
+&pwm3 {
+        status = "okay";
+};
+
+&sdhci {
+        /*
+         * Signal integrity isn't great at 200 MHz and 150 MHz (DDR) gives the
+         * same (or nearly the same) performance for all eMMC that are intended
+         * to be used.
+         */
+        assigned-clock-rates = <150000000>;
+
+        bus-width = <8>;
+        mmc-hs400-1_8v;
+        mmc-hs400-enhanced-strobe;
+        non-removable;
+        status = "okay";
+};
+
+&sdmmc {
+        status = "okay";
+
+        /*
+         * Note: configure "sdmmc_cd" as card detect even though it's actually
+         * hooked to ground.  Because we specified "cd-gpios" below dw_mmc
+         * should be ignoring card detect anyway.  Specifying the pin as
+         * sdmmc_cd means that even if you've got GRF_SOC_CON7[12] (force_jtag)
+         * turned on that the system will still make sure the port is
+         * configured as SDMMC and not JTAG.
+         */
+        pinctrl-names = "default";
+        pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_cd_gpio
+                     &sdmmc_bus4>;
+
+        bus-width = <4>;
+        cap-mmc-highspeed;
+        cap-sd-highspeed;
+        cd-gpios = <&gpio4 24 GPIO_ACTIVE_LOW>;
+        disable-wp;
+        sd-uhs-sdr12;
+        sd-uhs-sdr25;
+        sd-uhs-sdr50;
+        sd-uhs-sdr104;
+        vmmc-supply = <&pp3000_sd_slot>;
+        vqmmc-supply = <&ppvar_sd_card_io>;
+};
+
+&spi1 {
+        status = "okay";
+
+        pinctrl-names = "default", "sleep";
+        pinctrl-1 = <&spi1_sleep>;
+
+        spiflash@0 {
+                compatible = "jedec,spi-nor";
+                reg = <0>;
+
+                /* May run faster once verified. */
+                spi-max-frequency = <10000000>;
+        };
+};
+
+&spi2 {
+        status = "okay";
+
+        wacky_spi_audio: spi2@0 {
+                compatible = "realtek,rt5514";
+                reg = <0>;
+
+                /* May run faster once verified. */
+                spi-max-frequency = <10000000>;
+        };
+};
+
+&spi5 {
+        status = "okay";
+
+        cros_ec: ec@0 {
+                compatible = "google,cros-ec-spi";
+                reg = <0>;
+                interrupt-parent = <&gpio0>;
+                interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&ec_ap_int_l>;
+                spi-max-frequency = <3000000>;
+
+                i2c_tunnel: i2c-tunnel {
+                        compatible = "google,cros-ec-i2c-tunnel";
+                        google,remote-bus = <4>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                };
+
+                cros_ec_pwm: ec-pwm {
+                        compatible = "google,cros-ec-pwm";
+                        #pwm-cells = <1>;
+                };
+        };
+};
+
+&tsadc {
+        status = "okay";
+
+        rockchip,hw-tshut-mode = <1>; /* tshut mode 0:CRU 1:GPIO */
+        rockchip,hw-tshut-polarity = <1>; /* tshut polarity 0:LOW 1:HIGH */
+};
+
+&u2phy0 {
+        status = "okay";
+};
+
+&u2phy1 {
+        status = "okay";
+};
+
+&u2phy0_host {
+        status = "okay";
+};
+
+&u2phy1_host {
+        status = "okay";
+};
+
+&u2phy0_otg {
+        status = "okay";
+};
+
+&u2phy1_otg {
+        status = "okay";
+};
+
+&uart2 {
+        status = "okay";
+};
+
+&usb_host0_ehci {
+        status = "okay";
+};
+
+&usb_host0_ohci {
+        status = "okay";
+};
+
+&usb_host1_ehci {
+        status = "okay";
+};
+
+&usb_host1_ohci {
+        status = "okay";
+};
+
+&usbdrd3_0 {
+        status = "okay";
+};
+
+&usbdrd_dwc3_0 {
+        status = "okay";
+        dr_mode = "host";
+};
+
+&usbdrd3_1 {
+        status = "okay";
+};
+
+&usbdrd_dwc3_1 {
+        status = "okay";
+        dr_mode = "host";
+};
+
+#include <arm/cros-ec-keyboard.dtsi>
+#include <arm/cros-ec-sbs.dtsi>
+
+&pinctrl {
+        /*
+         * pinctrl settings for pins that have no real owners.
+         *
+         * At the moment settings are identical for S0 and S3, but if we later
+         * need to configure things differently for S3 we'll adjust here.
+         */
+        pinctrl-names = "default";
+        pinctrl-0 = <
+                &ap_pwroff      /* AP will auto-assert this when in S3 */
+                &clk_32k        /* This pin is always 32k on gru boards */
+
+                /*
+                 * We want this driven low ASAP; firmware should help us, but
+                 * we can help ourselves too.
+                 */
+                &wlan_module_reset_l
+        >;
+
+        pcfg_output_low: pcfg-output-low {
+                output-low;
+        };
+
+        pcfg_output_high: pcfg-output-high {
+                output-high;
+        };
+
+        pcfg_pull_none_8ma: pcfg-pull-none-8ma {
+                bias-disable;
+                drive-strength = <8>;
+        };
+
+        backlight-enable {
+                bl_en: bl-en {
+                        rockchip,pins = <1 17 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+
+        cros-ec {
+                ec_ap_int_l: ec-ap-int-l {
+                        rockchip,pins = <RK_GPIO0 1 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+        };
+
+        discrete-regulators {
+                pp1500_en: pp1500-en {
+                        rockchip,pins = <RK_GPIO0 10 RK_FUNC_GPIO
+                                         &pcfg_pull_none>;
+                };
+
+                pp1800_audio_en: pp1800-audio-en {
+                        rockchip,pins = <RK_GPIO0 2 RK_FUNC_GPIO
+                                         &pcfg_pull_down>;
+                };
+
+                pp3300_disp_en: pp3300-disp-en {
+                        rockchip,pins = <RK_GPIO4 27 RK_FUNC_GPIO
+                                         &pcfg_pull_none>;
+                };
+
+                pp3000_en: pp3000-en {
+                        rockchip,pins = <RK_GPIO0 12 RK_FUNC_GPIO
+                                         &pcfg_pull_none>;
+                };
+
+                sd_io_pwr_en: sd-io-pwr-en {
+                        rockchip,pins = <RK_GPIO2 2 RK_FUNC_GPIO
+                                         &pcfg_pull_none>;
+                };
+
+                sd_pwr_1800_sel: sd-pwr-1800-sel {
+                        rockchip,pins = <RK_GPIO2 28 RK_FUNC_GPIO
+                                         &pcfg_pull_none>;
+                };
+
+                sd_slot_pwr_en: sd-slot-pwr-en {
+                        rockchip,pins = <RK_GPIO4 29 RK_FUNC_GPIO
+                                         &pcfg_pull_none>;
+                };
+
+                wlan_module_pd_l: wlan-module-pd-l {
+                        rockchip,pins = <RK_GPIO0 4 RK_FUNC_GPIO
+                                         &pcfg_pull_down>;
+                };
+        };
+
+        codec {
+                /* Has external pullup */
+                headset_int_l: headset-int-l {
+                        rockchip,pins = <1 23 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+
+                mic_int: mic-int {
+                        rockchip,pins = <1 13 RK_FUNC_GPIO &pcfg_pull_down>;
+                };
+        };
+
+        max98357a {
+                sdmode_en: sdmode-en {
+                        rockchip,pins = <1 2 RK_FUNC_GPIO &pcfg_pull_down>;
+                };
+        };
+
+        pcie {
+                pcie_clkreqn_cpm: pci-clkreqn-cpm {
+                        /*
+                         * Since our pcie doesn't support ClockPM(CPM), we want
+                         * to hack this as gpio, so the EP could be able to
+                         * de-assert it along and make ClockPM(CPM) work.
+                         */
+                        rockchip,pins = <2 26 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+
+        sdmmc {
+                /*
+                 * We run sdmmc at max speed; bump up drive strength.
+                 * We also have external pulls, so disable the internal ones.
+                 */
+                sdmmc_bus4: sdmmc-bus4 {
+                        rockchip,pins =
+                                <4 8 RK_FUNC_1 &pcfg_pull_none_8ma>,
+                                <4 9 RK_FUNC_1 &pcfg_pull_none_8ma>,
+                                <4 10 RK_FUNC_1 &pcfg_pull_none_8ma>,
+                                <4 11 RK_FUNC_1 &pcfg_pull_none_8ma>;
+                };
+
+                sdmmc_clk: sdmmc-clk {
+                        rockchip,pins =
+                                <4 12 RK_FUNC_1 &pcfg_pull_none_8ma>;
+                };
+
+                sdmmc_cmd: sdmmc-cmd {
+                        rockchip,pins =
+                                <4 13 RK_FUNC_1 &pcfg_pull_none_8ma>;
+                };
+
+                /*
+                 * In our case the official card detect is hooked to ground
+                 * to avoid getting access to JTAG just by sticking something
+                 * in the SD card slot (see the force_jtag bit in the TRM).
+                 *
+                 * We still configure it as card detect because it doesn't
+                 * hurt and dw_mmc will ignore it.  We make sure to disable
+                 * the pull though so we don't burn needless power.
+                 */
+                sdmmc_cd: sdmcc-cd {
+                        rockchip,pins =
+                                <0 7 RK_FUNC_1 &pcfg_pull_none>;
+                };
+
+                /* This is where we actually hook up CD; has external pull */
+                sdmmc_cd_gpio: sdmmc-cd-gpio {
+                        rockchip,pins = <4 24 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+
+        spi1 {
+                spi1_sleep: spi1-sleep {
+                        /*
+                         * Pull down SPI1 CLK/CS/RX/TX during suspend, to
+                         * prevent leakage.
+                         */
+                        rockchip,pins = <1 9 RK_FUNC_GPIO &pcfg_pull_down>,
+                                        <1 10 RK_FUNC_GPIO &pcfg_pull_down>,
+                                        <1 7 RK_FUNC_GPIO &pcfg_pull_down>,
+                                        <1 8 RK_FUNC_GPIO &pcfg_pull_down>;
+                };
+        };
+
+        touchscreen {
+                touch_int_l: touch-int-l {
+                        rockchip,pins = <3 13 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+
+                touch_reset_l: touch-reset-l {
+                        rockchip,pins = <4 26 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+        };
+
+        trackpad {
+                ap_i2c_tp_pu_en: ap-i2c-tp-pu-en {
+                        rockchip,pins = <3 12 RK_FUNC_GPIO &pcfg_output_high>;
+                };
+
+                trackpad_int_l: trackpad-int-l {
+                        rockchip,pins = <1 4 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+        };
+
+        wifi {
+                wifi_perst_l: wifi-perst-l {
+                        rockchip,pins = <2 27 RK_FUNC_GPIO &pcfg_pull_none>;
+                };
+
+                wlan_module_reset_l: wlan-module-reset-l {
+                        /*
+                         * We want this driven low ASAP (As {Soon,Strongly} As
+                         * Possible), to avoid leakage through the powered-down
+                         * WiFi.
+                         */
+                        rockchip,pins = <1 11 RK_FUNC_GPIO &pcfg_output_low>;
+                };
+
+                bt_host_wake_l: bt-host-wake-l {
+                        /* Kevin has an external pull up, but Gru does not */
+                        rockchip,pins = <0 3 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+        };
+
+        write-protect {
+                ap_fw_wp: ap-fw-wp {
+                        rockchip,pins = <1 18 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+        };
+};