Re: [PATCH 2/2] Add support for Xiaomi MIX 3 (perseus) smartpohone.

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On 21.05.2022 07:39, Junhao Xie wrote:
> Currently working features:
> - UFS
> - GPU
> - Video decode/encode
> - USB Type C port in peripheral mode
> - Modem (LTE / SMS)
> - Four buttons (AI/Power/VolUp/VolDown)
> - Bluetooth
> - Wi-Fi
> 
> Signed-off-by: Junhao Xie <bigfoot@xxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/Makefile             |   1 +
>  .../boot/dts/qcom/sdm845-xiaomi-perseus.dts   | 799 ++++++++++++++++++
>  2 files changed, 800 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/sdm845-xiaomi-perseus.dts
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index f9e6343acd03..af23c3bd3e81 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -106,6 +106,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-sony-xperia-tama-akari.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-sony-xperia-tama-akatsuki.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-sony-xperia-tama-apollo.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-xiaomi-beryllium.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-xiaomi-perseus.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-shift-axolotl.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-lenovo-yoga-c630.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-samsung-w737.dtb
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-perseus.dts b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-perseus.dts
> new file mode 100644
> index 000000000000..a049936f2a96
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-perseus.dts
> @@ -0,0 +1,799 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2021, BigfootACA <bigfoot@xxxxxxxxxxx>
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/gpio/gpio.h>
This one is already included in sdm845.dtsi

> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> +#include <dt-bindings/input/linux-event-codes.h>
> +#include "sdm845.dtsi"
> +#include "pm8998.dtsi"
> +#include "pmi8998.dtsi"
> +
> +/*
> + * Delete following upstream (sdm845.dtsi) reserved
> + * memory mappings which are different in this device.
> + */
> +/delete-node/ &rmtfs_mem;
> +/delete-node/ &adsp_mem;
> +/delete-node/ &wlan_msa_mem;
> +/delete-node/ &mpss_region;
> +/delete-node/ &venus_mem;
> +/delete-node/ &cdsp_mem;
> +/delete-node/ &mba_region;
> +/delete-node/ &slpi_mem;
> +/delete-node/ &spss_mem;
> +
> +/ {
> +	model = "Xiaomi MIX 3";
I think this one still had "Mi" in the name.

> +	compatible = "xiaomi,perseus", "qcom,sdm845";
> +	chassis-type = "handset";
> +
> +	/* required for bootloader to select correct board */
> +	qcom,board-id = <0x63 0x0>;
> +	qcom,msm-id = <321 0x20001>;
> +
> +	aliases {
> +		serial0 = &uart9;
> +		hsuart0 = &uart6;
> +		bluetooth0 = &bluetooth;
> +		wifi0 = &wifi;
> +		display0 = &framebuffer0;
Please sort these alphabetically and check if the display0 alias is even necessary
> +	};
> +
> +	chosen {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		// For simplefb hack
Not sure if this comment is necesary, but if you think so, please make it /* like this */
> +		stdout-path = "display0";
This may be superfluous
> +		framebuffer0: framebuffer@9d400000 {
> +			status = "okay";
This is definitely not necessary
> +			compatible = "simple-framebuffer";
> +			reg = <0 0x9D400000 0 0x2400000>;
Please use lowercase hex
> +			width = <1080>;
> +			height = <2340>;
> +			stride = <(1080 * 4)>;
> +			format = "a8r8g8b8";
> +		};
> +	};
> +
> +	vph_pwr: vph-pwr-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vph_pwr";
> +		regulator-min-microvolt = <3700000>;
> +		regulator-max-microvolt = <3700000>;
> +	};
> +
> +	/*
> +	 * Apparently RPMh does not provide support for PM8998 S4 because it
> +	 * is always-on; model it as a fixed regulator.
> +	 */
> +	vreg_s4a_1p8: pm8998-smps4 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vreg_s4a_1p8";
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +		vin-supply = <&vph_pwr>;
> +	};
> +
> +	disp_vci_vreg: disp_vci_vreg {
No underscores in node names, applies to all occuences.

> +		compatible = "regulator-fixed";
> +		regulator-name = "disp_vci_vreg";
> +		start-delay-us = <4000>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +		enable-active-high;
> +		gpio = <&tlmm 99 0>;
GPIO_ACTIVE_HIGH, applies to all occurences

> +	};
> +
> +	disp_vddio_vreg: disp_vddio_vreg {
> +		compatible = "regulator-fixed";
> +		regulator-name = "disp_vddio_vreg";
> +		startup-delay-us = <4000>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +		enable-active-high;
> +		gpio = <&tlmm 79 0>;
> +	};
> +
> +	gpio_keys {
> +		compatible = "gpio-keys";
> +		autorepeat;
Not sure if you want autorepeat on the AI key.

> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vol_up_pin_a &ai_key_ctrl>;
> +
> +		vol-up {
> +			label = "Volume Up";
> +			linux,code = <KEY_VOLUMEUP>;
> +			gpios = <&pm8998_gpio 6 GPIO_ACTIVE_LOW>;
> +			debounce-interval = <15>;
> +		};
> +
> +		ai-key {
> +			label = "AI Key";
> +			linux,code = <KEY_ASSISTANT>;
> +			gpios = <&tlmm 44 GPIO_ACTIVE_LOW>;
> +			debounce-interval = <39>;
> +		};
Sort alphabetically, please.

> +	};
> +
> +	reserved-memory {
> +		rmtfs_mem: memory@f6301000 {
> +			compatible = "qcom,rmtfs-mem";
> +			reg = <0 0xf6301000 0 0x200000>;
> +			no-map;
> +
> +			qcom,client-id = <1>;
> +			qcom,vmid = <15>;
> +		};
> +
> +		adsp_mem: memory@8c500000 {
> +			reg = <0 0x8c500000 0 0x1e00000>;
> +			no-map;
> +		};
> +
> +		wlan_msa_mem: memory@8e300000 {
> +			reg = <0 0x8e300000 0 0x100000>;
> +			no-map;
> +		};
> +
> +		mpss_region: memory@8e400000 {
> +			reg = <0 0x8e400000 0 0x7800000>;
> +			no-map;
> +		};
> +
> +		venus_mem: memory@95c00000 {
> +			reg = <0 0x95c00000 0 0x500000>;
> +			no-map;
> +		};
> +
> +		cdsp_mem: memory@96100000 {
> +			reg = <0 0x96100000 0 0x800000>;
> +			no-map;
> +		};
> +
> +		mba_region: memory@96900000 {
> +			reg = <0 0x96900000 0 0x200000>;
> +			no-map;
> +		};
> +
> +		slpi_mem: memory@96b00000 {
> +			reg = <0 0x96b00000 0 0x1400000>;
> +			no-map;
> +		};
> +
> +		spss_mem: memory@97f00000 {
> +			reg = <0 0x97f00000 0 0x100000>;
> +			no-map;
> +		};
> +
> +		cont_splash_region: memory@9d400000 {
> +			compatible = "removed-dma-pool";
> +			reg = <0 0x9D400000 0 0x02400000>;
Use lowercase hex, please.
> +			no-map;
> +		};
> +
> +		ramoops: ramoops@b0000000 {
> +			compatible = "ramoops";
> +			reg = <0 0xb0000000 0 0x00400000>;
Please remove leading zeroes from the size value. Also applies to all other encounters in this file.

> +			record-size = <0x40000>; /*256x1024*/
Not sure if this comment is necessary, but if you want to keep it, add spaces after the opening and before the closing.
> +			console-size = <0x40000>;
> +			ftrace-size = <0x40000>;
> +			pmsg-size = <0x200000>;
> +			ecc-size = <0x0>;
If it's 0, remove it. Might be useful to set it to 16 though, as this memory easily gets corrupted on reboots.
> +		};
> +	};
> +};
> +
> +&adsp_pas {
> +	status = "okay";
> +	firmware-name = "qcom/sdm845/xiaomi/adsp.mbn";
> +};
> +
> +&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_s2a_1p1: smps2 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <1100000>;
> +			regulator-max-microvolt = <1100000>;
> +		};
> +
> +		vreg_s3a_1p35: smps3 {
> +			regulator-min-microvolt = <1352000>;
> +			regulator-max-microvolt = <1352000>;
> +		};
> +
> +		vreg_s5a_2p04: smps5 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <1904000>;
> +			regulator-max-microvolt = <2040000>;
> +		};
> +
> +		vreg_s7a_1p025: smps7 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <900000>;
> +			regulator-max-microvolt = <1028000>;
> +		};
> +
> +		vdda_ufs1_core:
> +		vreg_l1a_0p875: ldo1 {
> +			regulator-min-microvolt = <880000>;
> +			regulator-max-microvolt = <880000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l2a_0p875: ldo2 {
> +			regulator-min-microvolt = <1200000>;
> +			regulator-max-microvolt = <1200000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +			regulator-always-on;
> +		};
> +
> +		reg_l3a_0p875: ldo3 {
> +			regulator-min-microvolt = <1000000>;
> +			regulator-max-microvolt = <1000000>;
> +			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_l6a_1p8: ldo6 {
> +			regulator-min-microvolt = <1856000>;
> +			regulator-max-microvolt = <1856000>;
> +			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_l8a_1p2: ldo8 {
> +			regulator-min-microvolt = <1200000>;
> +			regulator-max-microvolt = <1248000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l9a_2p95: ldo9 {
> +			regulator-min-microvolt = <1704000>;
> +			regulator-max-microvolt = <2928000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l10a_2p95: ldo10 {
> +			regulator-min-microvolt = <1704000>;
> +			regulator-max-microvolt = <2928000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l11a_1p05: ldo11 {
> +			regulator-min-microvolt = <1000000>;
> +			regulator-max-microvolt = <1048000>;
> +			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_l13a_2p95: ldo13 {
> +			regulator-min-microvolt = <1800000>;
> +			regulator-max-microvolt = <2960000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l14a_1p8: ldo14 {
> +			regulator-min-microvolt = <1800000>;
> +			regulator-max-microvolt = <1800000>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l15a_1p8: ldo15 {
> +			regulator-min-microvolt = <1800000>;
> +			regulator-max-microvolt = <1800000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l16a_2p7: ldo16 {
> +			regulator-min-microvolt = <2704000>;
> +			regulator-max-microvolt = <2704000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l17a_1p3: ldo17 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <1304000>;
> +			regulator-max-microvolt = <1304000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l18a_2p9: ldo18 {
> +			regulator-min-microvolt = <2704000>;
> +			regulator-max-microvolt = <2960000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l19a_3p1: ldo19 {
> +			regulator-min-microvolt = <2856000>;
> +			regulator-max-microvolt = <3104000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l20a_2p95: ldo20 {
> +			regulator-min-microvolt = <2704000>;
> +			regulator-max-microvolt = <2960000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l21a_2p95: ldo21 {
> +			regulator-min-microvolt = <2704000>;
> +			regulator-max-microvolt = <2960000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l22a_3p3: ldo22 {
> +			regulator-min-microvolt = <2864000>;
> +			regulator-max-microvolt = <3312000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l23a_3p3: ldo23 {
> +			regulator-min-microvolt = <3000000>;
> +			regulator-max-microvolt = <3312000>;
> +			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-always-on;
> +			regulator-min-microvolt = <3000000>;
> +			regulator-max-microvolt = <3312000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vdda_mipi_dsi0_1p2:
> +		vdda_ufs1_1p2:
> +		vreg_l26a_1p2: ldo26 {
> +			regulator-min-microvolt = <1200000>;
> +			regulator-max-microvolt = <1200000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +			regulator-boot-on;
> +		};
> +
> +		vreg_l28a_3p0: ldo28 {
> +			regulator-min-microvolt = <2856000>;
> +			regulator-max-microvolt = <3008000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +			regulator-always-on;
> +		};
> +
> +		vreg_lvs1a_1p8: lvs1 {
> +			regulator-min-microvolt = <1800000>;
> +			regulator-max-microvolt = <1800000>;
> +			regulator-always-on;
> +		};
> +
> +		vreg_lvs2a_1p8: lvs2 {
> +			regulator-min-microvolt = <1800000>;
> +			regulator-max-microvolt = <1800000>;
> +			regulator-always-on;
> +		};
> +	};
> +
> +	pmi8998-rpmh-regulators {
> +		compatible = "qcom,pmi8998-rpmh-regulators";
> +		qcom,pmic-id = "b";
> +		vdd-bob-supply = <&vph_pwr>;
Add a newline, please.
> +		vreg_bob: bob {
> +			regulator-min-microvolt = <3312000>;
> +			regulator-max-microvolt = <3600000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_AUTO>;
> +			regulator-allow-bypass;
> +		};
> +	};
> +
> +	pm8005-rpmh-regulators {
> +		compatible = "qcom,pm8005-rpmh-regulators";
> +		qcom,pmic-id = "c";
> +		vdd-s1-supply = <&vph_pwr>;
> +		vdd-s2-supply = <&vph_pwr>;
> +		vdd-s3-supply = <&vph_pwr>;
> +		vdd-s4-supply = <&vph_pwr>;
Add a newline, please.
> +		vreg_smp3c_0p6: smps3 {
> +			regulator-min-microvolt = <600000>;
> +			regulator-max-microvolt = <600000>;
> +			regulator-always-on;
> +		};
> +	};
> +};
> +
> +&cdsp_pas {
> +	status = "okay";
> +	firmware-name = "qcom/sdm845/xiaomi/cdsp.mbn";
> +};
> +
> +&dsi0 {
> +	status = "okay";
> +	vdda-supply = <&vdda_mipi_dsi0_1p2>;
> +
> +	panel@0 {
> +		compatible = "samsung,fhd-ea8076";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		reg = <0>;
> +		vddio-supply = <&vreg_l14a_1p8>;
> +		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&sde_dsi_active &sde_te_active>;
reg
compatible
various properties
#-cells

> +		port {
> +			samsung_fhd_ea8076_in_0: endpoint {
> +				remote-endpoint = <&dsi0_out>;
> +			};
> +		};
> +	};
> +};
> +
> +&dsi0_out {
> +	remote-endpoint = <&samsung_fhd_ea8076_in_0>;
> +	data-lanes = <0 1 2 3>;
> +};
> +
> +&dsi0_phy {
> +	status = "okay";
> +	vdds-supply = <&vreg_l1a_0p875>;
> +};
> +
> +&gcc {
> +	protected-clocks = <GCC_QSPI_CORE_CLK>,
> +			   <GCC_QSPI_CORE_CLK_SRC>,
> +			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
> +			   <GCC_LPASS_Q6_AXI_CLK>,
> +			   <GCC_LPASS_SWAY_CLK>;
> +};
> +
> +&gmu {
> +	status = "okay";
> +};
> +
> +&gpu {
> +	status = "okay";
> +
> +	zap-shader {
> +		memory-region = <&gpu_mem>;
> +		firmware-name = "qcom/sdm845/xiaomi/a630_zap.mbn";
> +	};
> +};
> +
> +&ipa {
> +	status = "okay";
> +	memory-region = <&ipa_fw_mem>;
> +	firmware-name = "qcom/sdm845/xiaomi/ipa_fws.mbn";
> +};
> +
> +&gpi_dma0 {
> +	status = "okay";
> +};
> +
> +&gpi_dma1 {
> +	status = "okay";
> +};
> +
> +&i2c3 {
> +	status = "okay";
> +	#dma-cells = <3>;
> +	clock-frequency = <400000>;
> +	dmas = <&gpi_dma0 0 3 QCOM_GPI_I2C>,
> +	       <&gpi_dma0 1 3 QCOM_GPI_I2C>;
> +	dma-names = "tx", "rx";
These DMA properties should be in sdm845.dtsi.

> +
> +	/* NFC nq-nci @ 0x28 */
> +
> +};
> +
> +&i2c5 {
> +	status = "okay";
> +	#dma-cells = <3>;
> +	clock-frequency = <400000>;
> +	dmas = <&gpi_dma0 0 5 QCOM_GPI_I2C>,
> +	       <&gpi_dma0 1 5 QCOM_GPI_I2C>;
> +	dma-names = "tx", "rx";
> +
> +	/* Audio Codec tas2557 @ 0x4c */
> +};
> +
> +&i2c10 {
> +	status = "okay";
> +	#dma-cells = <3>;
> +	clock-frequency = <400000>;
> +	dmas =  <&gpi_dma1 0 2 QCOM_GPI_I2C>,
> +	        <&gpi_dma1 1 2 QCOM_GPI_I2C>;
> +	dma-names = "tx", "rx";
> +
> +	/* smb1355 charger @ 0x08, 0x0C */
While this is not necessarily code, please keep the hex lowercase.

> +	/* idtp9220 wireless charger @ 0x61 */
> +};
> +
> +&i2c14 {
> +	status = "okay";
> +	#dma-cells = <3>;
> +	clock-frequency = <400000>;
> +	dmas =  <&gpi_dma1 0 6 QCOM_GPI_I2C>,
> +	        <&gpi_dma1 1 6 QCOM_GPI_I2C>;
> +	dma-names = "tx", "rx";
> +
> +	/* stm fts touchscreen @ 0x49 */
> +	/* focaltech touchscreen @ 0x38 */
> +	/* atmel touchscreen @ 0x4a */
> +};
> +
> +&mdss {
> +	status = "okay";
> +};
> +
> +&mdss_mdp {
> +	status = "okay";
> +};
> +
> +&mss_pil {
> +	status = "okay";
> +	firmware-name = "qcom/sdm845/xiaomi/mba.mbn", "qcom/sdm845/xiaomi/modem.mbn";
> +};
> +
> +&tlmm {
> +	sde_dsi_active: sde_dsi_active {
No underscores in node names (between : and {, labels can have these), please.
> +		mux {
Please drop the mux{} and config{}, you can do it like this instead:

sde_dsi_active: sde-dsi-active {
    pins = "gpio6", "gpio52";
    function = "gpio";
    drive-strength = <8>;
    bias-disable;
}
> +			pins = "gpio6", "gpio52";
> +			function = "gpio";
> +		};
> +
> +		config {
> +			pins = "gpio6", "gpio52";
> +			drive-strength = <8>;   /* 8 mA */
These comments are not necessary, since they basically repeat what the code syntax says.
> +			bias-disable = <0>;   /* no pull */
This should be a boolean value (either bias-disable; is present or not).

> +		};
> +	};
> +
> +	sde_dsi_suspend: sde_dsi_suspend {
> +		mux {
> +			pins = "gpio6", "gpio52";
> +			function = "gpio";
> +		};
> +
> +		config {
> +			pins = "gpio6", "gpio52";
> +			drive-strength = <2>;   /* 2 mA */
> +			bias-pull-down; /* PULL DOWN */
> +		};
> +	};
> +
> +	sde_te_active: sde_te_active {
> +		mux {
> +			pins = "gpio10";
> +			function = "mdp_vsync";
> +		};
> +
> +		config {
> +			pins = "gpio10";
> +			drive-strength = <2>;   /* 2 mA */
> +			bias-pull-down; /* PULL DOWN */
> +		};
> +	};
> +
> +	sde_te_suspend: sde_te_suspend {
> +		mux {
> +			pins = "gpio10";
> +			function = "mdp_vsync";
> +		};
> +
> +		config {
> +			pins = "gpio10";
> +			drive-strength = <2>;   /* 2 mA */
> +			bias-pull-down; /* PULL DOWN */
> +		};
> +	};
> +
> +	ai_key_ctrl: ai_key_ctrl {
> +		mux {
> +			pins = "gpio44";
> +			function = "gpio";
> +		};
> +		config {
> +			pins = "gpio44";
> +			drive-strength = <2>;   /* 2 mA */
> +			bias-pull-up; /* PULL UP */
> +			input-enable;
> +		};
> +	};
> +};
> +
> +&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 {
This definition should be moved to pm8998.dtsi (check how it's done on for example sm8350-sagami and pmk8350).

> +		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";
> +};
> +
> +&tlmm {
> +	gpio-reserved-ranges = <0 4>, <81 4>;
> +};
> +
> +&uart9 {
> +	status = "okay";
> +};
Uart9 goes after uart6.

> +
> +&uart6 {
> +	status = "okay";
> +
> +	bluetooth: 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>;
> +	};
> +};
> +
> +
> +&usb_1 {
> +	status = "okay";
> +
> +	/* We'll use this as USB 2.0 only */
> +	qcom,select-utmi-as-pipe-clk;
> +};
> +
> +&usb_1_dwc3 {
> +	dr_mode = "peripheral";
> +
> +	/* fastest mode for USB 2 */
> +	maximum-speed = "high-speed";
> +
> +	/* Remove USB3 phy */
> +	phys = <&usb_1_hsphy>;
> +	phy-names = "usb2-phy";
> +};
> +
> +&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>;
> +};
> +
> +&venus {
This one is not sorted properly.

> +	status = "okay";
> +	firmware-name = "qcom/sdm845/xiaomi/venus.mbn";
> +};
> +
> +&ufs_mem_hc {
> +	status = "okay";
> +	reset-gpios = <&tlmm 150 GPIO_ACTIVE_LOW>;
> +	vcc-supply = <&vreg_l20a_2p95>;
> +	vcc-max-microamp = <800000>;
> +};
> +
> +&ufs_mem_phy {
> +	status = "okay";
> +	vdda-phy-supply = <&vdda_ufs1_core>;
> +	vdda-pll-supply = <&vdda_ufs1_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>;
> +	vdd-3.3-ch1-supply = <&vreg_l23a_3p3>;
> +};
> +
> +/* PINCTRL - additions to nodes defined in sdm845.dtsi */
This comment is superfluous.

> +&qup_uart6_default {
> +	pinmux {
> +		 pins = "gpio45", "gpio46", "gpio47", "gpio48";
> +		 function = "qup6";
> +	};
I'll let this instance of pinmux{} slip through, as it'd require more changes on the SoC DTSI side and also possibly in other devices' trees. I'll send a patch cleaning up sdm845* soon.
> +
> +	cts {
> +		pins = "gpio45";
> +		bias-disable;
> +	};
> +
> +	rts-tx {
> +		pins = "gpio46", "gpio47";
> +		drive-strength = <2>;
> +		bias-disable;
> +	};
> +
> +	rx {
> +		pins = "gpio48";
> +		bias-pull-up;
> +	};
> +};



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