This adds an initial dts for the Dragonboard 845. Supported
functionality includes Debug UART, UFS, USB-C (peripheral), USB-A
(host), microSD-card and Bluetooth.

Initializing the SMMU is clearing the mapping used for the splash screen
framebuffer, which causes the board to reboot. This can be worked around
using:

  fastboot oem select-display-panel none

Reviewed-by: Vinod Koul <vk...@kernel.org>
Reviewed-by: Vivek Gautam <vivek.gau...@codeaurora.org>
Tested-by: Vinod Koul <vk...@kernel.org>
Tested-by: Srinivas Kandagatla <srinivas.kandaga...@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.anders...@linaro.org>
---

Changes since v2:
- Added copyright
- Sorted gpio_keys and leds nodes

 arch/arm64/boot/dts/qcom/Makefile          |   1 +
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 557 +++++++++++++++++++++
 2 files changed, 558 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sdm845-db845c.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile 
b/arch/arm64/boot/dts/qcom/Makefile
index 21d548f02d39..b3fe72ff2955 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_QCOM) += msm8992-bullhead-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8994-angler-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8996-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8998-mtp.dtb
+dtb-$(CONFIG_ARCH_QCOM)        += sdm845-db845c.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += sdm845-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += qcs404-evb-1000.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += qcs404-evb-4000.dtb
diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts 
b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
new file mode 100644
index 000000000000..71bd717a4251
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -0,0 +1,557 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019, Linaro Ltd.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
+#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include "sdm845.dtsi"
+#include "pm8998.dtsi"
+#include "pmi8998.dtsi"
+
+/ {
+       model = "Thundercomm Dragonboard 845c";
+       compatible = "thundercomm,db845c", "qcom,sdm845";
+
+       aliases {
+               serial0 = &uart9;
+               hsuart0 = &uart6;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       dc12v: dc12v-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "DC12V";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               regulator-always-on;
+       };
+
+       gpio_keys {
+               compatible = "gpio-keys";
+               autorepeat;
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&vol_up_pin_a>;
+
+               vol-up {
+                       label = "Volume Up";
+                       linux,code = <KEY_VOLUMEUP>;
+                       gpios = <&pm8998_gpio 6 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               user4 {
+                       label = "green:user4";
+                       gpios = <&pm8998_gpio 13 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "panic-indicator";
+                       default-state = "off";
+               };
+
+               wlan {
+                       label = "yellow:wlan";
+                       gpios = <&pm8998_gpio 9 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "phy0tx";
+                       default-state = "off";
+               };
+
+               bt {
+                       label = "blue:bt";
+                       gpios = <&pm8998_gpio 5 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "bluetooth-power";
+                       default-state = "off";
+               };
+       };
+
+       lt9611_1v8: lt9611-vdd18-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "LT9611_1V8";
+
+               vin-supply = <&vdc_5v>;
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+
+               gpio = <&tlmm 89 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+       };
+
+       lt9611_3v3: lt9611-3v3 {
+               compatible = "regulator-fixed";
+               regulator-name = "LT9611_3V3";
+
+               vin-supply = <&vdc_3v3>;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               // TODO: make it possible to drive same GPIO from two clients
+               // gpio = <&tlmm 89 GPIO_ACTIVE_HIGH>;
+               // enable-active-high;
+       };
+
+       pcie0_1p05v: pcie-0-1p05v-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "PCIE0_1.05V";
+
+               vin-supply = <&vbat>;
+               regulator-min-microvolt = <1050000>;
+               regulator-max-microvolt = <1050000>;
+
+               // TODO: make it possible to drive same GPIO from two clients
+               // gpio = <&tlmm 90 GPIO_ACTIVE_HIGH>;
+               // enable-active-high;
+       };
+
+       pcie0_3p3v_dual: vldo-3v3-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "VLDO_3V3";
+
+               vin-supply = <&vbat>;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpio = <&tlmm 90 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&pcie0_pwren_state>;
+       };
+
+       v5p0_hdmiout: v5p0-hdmiout-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "V5P0_HDMIOUT";
+
+               vin-supply = <&vdc_5v>;
+               regulator-min-microvolt = <500000>;
+               regulator-max-microvolt = <500000>;
+
+               // TODO: make it possible to drive same GPIO from two clients
+               // gpio = <&tlmm 89 GPIO_ACTIVE_HIGH>;
+               // enable-active-high;
+       };
+
+       vbat: vbat-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "VBAT";
+
+               vin-supply = <&dc12v>;
+               regulator-min-microvolt = <4200000>;
+               regulator-max-microvolt = <4200000>;
+               regulator-always-on;
+       };
+
+       vbat_som: vbat-som-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "VBAT_SOM";
+
+               vin-supply = <&dc12v>;
+               regulator-min-microvolt = <4200000>;
+               regulator-max-microvolt = <4200000>;
+               regulator-always-on;
+       };
+
+       vdc_3v3: vdc-3v3-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "VDC_3V3";
+               vin-supply = <&dc12v>;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       vdc_5v: vdc-5v-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "VDC_5V";
+
+               vin-supply = <&dc12v>;
+               regulator-min-microvolt = <500000>;
+               regulator-max-microvolt = <500000>;
+               regulator-always-on;
+       };
+
+       vreg_s4a_1p8: vreg-s4a-1p8 {
+               compatible = "regulator-fixed";
+               regulator-name = "vreg_s4a_1p8";
+
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               regulator-always-on;
+       };
+
+       vph_pwr: vph-pwr-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "vph_pwr";
+
+               vin-supply = <&vbat_som>;
+       };
+};
+
+&adsp_pas {
+       status = "okay";
+
+       firmware-name = "qcom/db845c/adsp.mdt";
+};
+
+&apps_rsc {
+       pm8998-rpmh-regulators {
+               compatible = "qcom,pm8998-rpmh-regulators";
+               qcom,pmic-id = "a";
+               vdd-s1-supply = <&vph_pwr>;
+               vdd-s2-supply = <&vph_pwr>;
+               vdd-s3-supply = <&vph_pwr>;
+               vdd-s4-supply = <&vph_pwr>;
+               vdd-s5-supply = <&vph_pwr>;
+               vdd-s6-supply = <&vph_pwr>;
+               vdd-s7-supply = <&vph_pwr>;
+               vdd-s8-supply = <&vph_pwr>;
+               vdd-s9-supply = <&vph_pwr>;
+               vdd-s10-supply = <&vph_pwr>;
+               vdd-s11-supply = <&vph_pwr>;
+               vdd-s12-supply = <&vph_pwr>;
+               vdd-s13-supply = <&vph_pwr>;
+               vdd-l1-l27-supply = <&vreg_s7a_1p025>;
+               vdd-l2-l8-l17-supply = <&vreg_s3a_1p35>;
+               vdd-l3-l11-supply = <&vreg_s7a_1p025>;
+               vdd-l4-l5-supply = <&vreg_s7a_1p025>;
+               vdd-l6-supply = <&vph_pwr>;
+               vdd-l7-l12-l14-l15-supply = <&vreg_s5a_2p04>;
+               vdd-l9-supply = <&vreg_bob>;
+               vdd-l10-l23-l25-supply = <&vreg_bob>;
+               vdd-l13-l19-l21-supply = <&vreg_bob>;
+               vdd-l16-l28-supply = <&vreg_bob>;
+               vdd-l18-l22-supply = <&vreg_bob>;
+               vdd-l20-l24-supply = <&vreg_bob>;
+               vdd-l26-supply = <&vreg_s3a_1p35>;
+               vin-lvs-1-2-supply = <&vreg_s4a_1p8>;
+
+               vreg_s3a_1p35: smps3 {
+                       regulator-min-microvolt = <1352000>;
+                       regulator-max-microvolt = <1352000>;
+               };
+
+               vreg_s5a_2p04: smps5 {
+                       regulator-min-microvolt = <1904000>;
+                       regulator-max-microvolt = <2040000>;
+               };
+
+               vreg_s7a_1p025: smps7 {
+                       regulator-min-microvolt = <900000>;
+                       regulator-max-microvolt = <1028000>;
+               };
+
+               vreg_l1a_0p875: ldo1 {
+                       regulator-min-microvolt = <880000>;
+                       regulator-max-microvolt = <880000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l5a_0p8: ldo5 {
+                       regulator-min-microvolt = <800000>;
+                       regulator-max-microvolt = <800000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l12a_1p8: ldo12 {
+                       regulator-min-microvolt = <1800000>;
+                       regulator-max-microvolt = <1800000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l7a_1p8: ldo7 {
+                       regulator-min-microvolt = <1800000>;
+                       regulator-max-microvolt = <1800000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l13a_2p95: ldo13 {
+                       regulator-min-microvolt = <1800000>;
+                       regulator-max-microvolt = <2960000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l17a_1p3: ldo17 {
+                       regulator-min-microvolt = <1304000>;
+                       regulator-max-microvolt = <1304000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l20a_2p95: ldo20 {
+                       regulator-min-microvolt = <2960000>;
+                       regulator-max-microvolt = <2968000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l21a_2p95: ldo21 {
+                       regulator-min-microvolt = <2960000>;
+                       regulator-max-microvolt = <2968000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l24a_3p075: ldo24 {
+                       regulator-min-microvolt = <3088000>;
+                       regulator-max-microvolt = <3088000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l25a_3p3: ldo25 {
+                       regulator-min-microvolt = <3300000>;
+                       regulator-max-microvolt = <3312000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+
+               vreg_l26a_1p2: ldo26 {
+                       regulator-min-microvolt = <1200000>;
+                       regulator-max-microvolt = <1200000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+               };
+       };
+
+       pmi8998-rpmh-regulators {
+               compatible = "qcom,pmi8998-rpmh-regulators";
+               qcom,pmic-id = "b";
+
+               vdd-bob-supply = <&vph_pwr>;
+
+               vreg_bob: bob {
+                       regulator-min-microvolt = <3312000>;
+                       regulator-max-microvolt = <3600000>;
+                       regulator-initial-mode = <RPMH_REGULATOR_MODE_AUTO>;
+                       regulator-allow-bypass;
+               };
+       };
+};
+
+&cdsp_pas {
+       status = "okay";
+       firmware-name = "qcom/db845c/cdsp.mdt";
+};
+
+&gcc {
+       protected-clocks = <GCC_QSPI_CORE_CLK>,
+                          <GCC_QSPI_CORE_CLK_SRC>,
+                          <GCC_QSPI_CNOC_PERIPH_AHB_CLK>;
+};
+
+&pm8998_gpio {
+       vol_up_pin_a: vol-up-active {
+               pins = "gpio6";
+               function = "normal";
+               input-enable;
+               bias-pull-up;
+               qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
+       };
+};
+
+&pm8998_pon {
+       resin {
+               compatible = "qcom,pm8941-resin";
+               interrupts = <0x0 0x8 1 IRQ_TYPE_EDGE_BOTH>;
+               debounce = <15625>;
+               bias-pull-up;
+               linux,code = <KEY_VOLUMEDOWN>;
+       };
+};
+
+&qupv3_id_0 {
+       status = "okay";
+};
+
+&qupv3_id_1 {
+       status = "okay";
+};
+
+&sdhc_2 {
+       status = "okay";
+
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdc2_default_state &sdc2_card_det_n>;
+
+       vmmc-supply = <&vreg_l21a_2p95>;
+       vqmmc-supply = <&vreg_l13a_2p95>;
+
+       bus-width = <4>;
+       cd-gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
+};
+
+&tlmm {
+       pcie0_pwren_state: pcie0-pwren {
+               pins = "gpio90";
+               function = "gpio";
+
+               drive-strength = <2>;
+               bias-disable;
+       };
+
+       sdc2_default_state: sdc2-default {
+               clk {
+                       pins = "sdc2_clk";
+                       bias-disable;
+
+                       /*
+                        * It seems that mmc_test reports errors if drive
+                        * strength is not 16 on clk, cmd, and data pins.
+                        */
+                       drive-strength = <16>;
+               };
+
+               cmd {
+                       pins = "sdc2_cmd";
+                       bias-pull-up;
+                       drive-strength = <10>;
+               };
+
+               data {
+                       pins = "sdc2_data";
+                       bias-pull-up;
+                       drive-strength = <10>;
+               };
+       };
+
+       sdc2_card_det_n: sd-card-det-n {
+               pins = "gpio126";
+               function = "gpio";
+               bias-pull-up;
+       };
+};
+
+&uart6 {
+       status = "okay";
+
+       bluetooth {
+               compatible = "qcom,wcn3990-bt";
+
+               vddio-supply = <&vreg_s4a_1p8>;
+               vddxo-supply = <&vreg_l7a_1p8>;
+               vddrf-supply = <&vreg_l17a_1p3>;
+               vddch0-supply = <&vreg_l25a_3p3>;
+               max-speed = <3200000>;
+       };
+};
+
+&uart9 {
+       status = "okay";
+};
+
+&usb_1 {
+       status = "okay";
+};
+
+&usb_1_dwc3 {
+       dr_mode = "peripheral";
+};
+
+&usb_1_hsphy {
+       status = "okay";
+
+       vdd-supply = <&vreg_l1a_0p875>;
+       vdda-pll-supply = <&vreg_l12a_1p8>;
+       vdda-phy-dpdm-supply = <&vreg_l24a_3p075>;
+
+       qcom,imp-res-offset-value = <8>;
+       qcom,hstx-trim-value = <QUSB2_V2_HSTX_TRIM_21_6_MA>;
+       qcom,preemphasis-level = <QUSB2_V2_PREEMPHASIS_5_PERCENT>;
+       qcom,preemphasis-width = <QUSB2_V2_PREEMPHASIS_WIDTH_HALF_BIT>;
+};
+
+&usb_1_qmpphy {
+       status = "okay";
+
+       vdda-phy-supply = <&vreg_l26a_1p2>;
+       vdda-pll-supply = <&vreg_l1a_0p875>;
+};
+
+&usb_2 {
+       status = "okay";
+};
+
+&usb_2_dwc3 {
+       dr_mode = "host";
+};
+
+&usb_2_hsphy {
+       status = "okay";
+
+       vdd-supply = <&vreg_l1a_0p875>;
+       vdda-pll-supply = <&vreg_l12a_1p8>;
+       vdda-phy-dpdm-supply = <&vreg_l24a_3p075>;
+
+       qcom,imp-res-offset-value = <8>;
+       qcom,hstx-trim-value = <QUSB2_V2_HSTX_TRIM_22_8_MA>;
+};
+
+&usb_2_qmpphy {
+       status = "okay";
+
+       vdda-phy-supply = <&vreg_l26a_1p2>;
+       vdda-pll-supply = <&vreg_l1a_0p875>;
+};
+
+&ufs_mem_hc {
+       status = "okay";
+
+       vcc-supply = <&vreg_l20a_2p95>;
+       vcc-max-microamp = <800000>;
+};
+
+&ufs_mem_phy {
+       status = "okay";
+
+       vdda-phy-supply = <&vreg_l1a_0p875>;
+       vdda-pll-supply = <&vreg_l26a_1p2>;
+};
+
+&wifi {
+       status = "okay";
+
+       vdd-0.8-cx-mx-supply = <&vreg_l5a_0p8>;
+       vdd-1.8-xo-supply = <&vreg_l7a_1p8>;
+       vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
+       vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
+};
+
+/* PINCTRL - additions to nodes defined in sdm845.dtsi */
+
+&qup_uart6_default {
+       pinmux {
+               pins = "gpio45", "gpio46", "gpio47", "gpio48";
+               function = "qup6";
+       };
+
+       cts {
+               pins = "gpio45";
+               bias-disable;
+       };
+
+       rts-tx {
+               pins = "gpio46", "gpio47";
+               drive-strength = <2>;
+               bias-disable;
+       };
+
+       rx {
+               pins = "gpio48";
+               bias-pull-up;
+       };
+};
+
+&qup_uart9_default {
+       pinconf-tx {
+               pins = "gpio4";
+               drive-strength = <2>;
+               bias-disable;
+       };
+
+       pinconf-rx {
+               pins = "gpio5";
+               drive-strength = <2>;
+               bias-pull-up;
+       };
+};
-- 
2.18.0

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