对I2C 890000 ， 进行查看，怎么在dts 中建立i2c :
QRD 手机的dts
=DTS 包含关系==PATH:=kernel/msm-4.14/arch/arm64/boot/dts===

sm8150-qupv3.dtsi:
        qupv3_se4_i2c: i2c@890000 {
                compatible = "qcom,i2c-geni";
                reg = <0x890000 0x4000>;
                interrupts = <GIC_SPI 605 0>;
                #address-cells = <1>;
                #size-cells = <0>;
                clock-names = "se-clk", "m-ahb", "s-ahb";
                clocks = <&clock_gcc GCC_QUPV3_WRAP0_S4_CLK>,
                        <&clock_gcc GCC_QUPV3_WRAP_0_M_AHB_CLK>,
                        <&clock_gcc GCC_QUPV3_WRAP_0_S_AHB_CLK>;
                dmas = <&gpi_dma0 0 4 3 64 0>,
                        <&gpi_dma0 1 4 3 64 0>;
                dma-names = "tx", "rx";
                pinctrl-names = "default", "sleep";
                pinctrl-0 = <&qupv3_se4_i2c_active>;
                pinctrl-1 = <&qupv3_se4_i2c_sleep>;
                qcom,wrapper-core = <&qupv3_0>;
                status = "disabled";
        };

=============================================
./qcom/sm8150.dtsi:#include "sm8150-qupv3.dtsi"
./qcom/sm8150-qrd.dts:#include "sm8150.dtsi" //最后的板级DTS
sm8150-qupv3.dtsi---包含于---》sm8150.dtsi----包含于----》sm8150-qrd.dtsi--包含于---->sm8150-qrd.dts

sm8150.dtsi：
        aliases {
                serial0 = &qupv3_se12_2uart;
                hsuart0 = &qupv3_se13_4uart;
                spi0 = &qupv3_se3_spi;
                i2c0 = &qupv3_se4_i2c;
        };

=====================================
./qcom/sm8150.dtsi:#include "sm8150-audio.dtsi"
sm8150-audio.dtsi-------包含于---->sm8150.dtsi

sm8150-audio.dtsi：

&qupv3_se4_i2c {
        status = "ok";
        fsa4480: fsa4480@43 {
                compatible = "qcom,fsa4480-i2c";
                reg = <0x43>;
                pinctrl-names = "default";
                pinctrl-0 = <&fsa_usbc_ana_en>;
        };
};

========================================
./qcom/sm8150-qrd.dtsi:17:#include "sm8150-sde-display.dtsi"
sm8150-sde-display.dtsi-----包含于----》sm8150-qrd.dtsi----包含于---->sm8150-qrd.dts
sm8150-sde-display.dtsi：

&sde_dp {
        qcom,dp-usbpd-detection = <&pm8150b_pdphy>;
        qcom,ext-disp = <&ext_disp>;
        qcom,dp-aux-switch = <&fsa4480>;
        qcom,usbplug-cc-gpio = <&tlmm 38 0>;
        pinctrl-names = "mdss_dp_active", "mdss_dp_sleep";
        pinctrl-0 = <&sde_dp_usbplug_cc_active>;
        pinctrl-1 = <&sde_dp_usbplug_cc_suspend>;
};

PIXEL4 XL 手机的dts

-----------------------pixel手机dts---------------------------------------------
./qcom-base/sm8150-qupv3.dtsi

qupv3_se9_i2c：
        qupv3_se9_i2c: i2c@a84000 {
                compatible = "qcom,i2c-geni";
                reg = <0xa84000 0x4000>;
                interrupts = <GIC_SPI 354 0>;
                #address-cells = <1>;
                #size-cells = <0>;
                clock-names = "se-clk", "m-ahb", "s-ahb";
                clocks = <&clock_gcc GCC_QUPV3_WRAP1_S1_CLK>,
                        <&clock_gcc GCC_QUPV3_WRAP_1_M_AHB_CLK>,
                        <&clock_gcc GCC_QUPV3_WRAP_1_S_AHB_CLK>;
                dmas = <&gpi_dma1 0 1 3 64 0>,
                        <&gpi_dma1 1 1 3 64 0>;
                dma-names = "tx", "rx";
                pinctrl-names = "default", "sleep";
                pinctrl-0 = <&qupv3_se9_i2c_active>;
                pinctrl-1 = <&qupv3_se9_i2c_sleep>;
                qcom,wrapper-core = <&qupv3_1>;
                status = "disabled";
        };

./sm8150-floral-camera-pmic.dtsi
&qupv3_se9_i2c {
/* MAX77826 */
status = "ok";
MAX77826: MAX77826@60 {
compatible = "max77826,max77826-regulator";
reg = <0x60>;
status = "ok";
pinctrl-names = "cam_pmic_en";
pinctrl-0 = <&cam_sensor_pmic_active>;
maxim,enable-gpio = <&tlmm 102 0>;

            regulators {
                    max77826_ldo1: max77826_ldo1 {
                            regulator-name = "max77826_ldo1";
                            regulator-min-microvolt = <600000>;
                            regulator-max-microvolt = <2187500>;
                    };

}

-----pixel 手机修改--------------
diff --git a/arch/arm64/boot/dts/google/sm8150-floral-touch.dtsi b/arch/arm64/boot/dts/google/sm8150-floral-touch.dtsi
index 3085749..7f64b9f 100644
--- a/arch/arm64/boot/dts/google/sm8150-floral-touch.dtsi
+++ b/arch/arm64/boot/dts/google/sm8150-floral-touch.dtsi
@@ -34,7 +34,13 @@
};

 &qupv3_se4_i2c {
-       status = "ok";
+        status = "ok";
+        fsa4480: fsa4480@43 {
+                compatible = "qcom,fsa4480-i2c";
+                reg = <0x43>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&fsa_usbc_ana_en>;
+        };
 };