  1   8  d   (              ,                                                      '   Boundary Devices i.MX7 Nitrogen7 Board        #   !boundary,imx7d-nitrogen7 fsl,imx7d     chosen        aliases           ,/soc/bus@30000000/gpio@30200000           2/soc/bus@30000000/gpio@30210000           8/soc/bus@30000000/gpio@30220000           >/soc/bus@30000000/gpio@30230000           D/soc/bus@30000000/gpio@30240000           J/soc/bus@30000000/gpio@30250000           P/soc/bus@30000000/gpio@30260000          V/soc/bus@30800000/i2c@30a20000           [/soc/bus@30800000/i2c@30a30000           `/soc/bus@30800000/i2c@30a40000           e/soc/bus@30800000/i2c@30a50000           j/soc/bus@30800000/mmc@30b40000           o/soc/bus@30800000/mmc@30b50000           t/soc/bus@30800000/mmc@30b60000        4   y/soc/bus@30800000/spba-bus@30800000/serial@30860000       4   /soc/bus@30800000/spba-bus@30800000/serial@30890000       4   /soc/bus@30800000/spba-bus@30800000/serial@30880000       "   /soc/bus@30800000/serial@30a60000         "   /soc/bus@30800000/serial@30a70000         "   /soc/bus@30800000/serial@30a80000         "   /soc/bus@30800000/serial@30a90000         1   /soc/bus@30800000/spba-bus@30800000/spi@30820000          1   /soc/bus@30800000/spba-bus@30800000/spi@30830000          1   /soc/bus@30800000/spba-bus@30800000/spi@30840000             /soc/bus@30400000/spi@30630000           /soc/bus@30800000/usb@30b10000           /soc/bus@30800000/usb@30b20000           /soc/bus@30800000/usb@30b30000        cpus                                 idle-states          psci       cpu-sleep-wait           !arm,idle-state                                	   d           2        *          ;            cpu@0            !arm,cortex-a7           Ccpu         O            S;]         c             j           z                                 speed_grade                    ;         cpu@1            !arm,cortex-a7           Ccpu         O           S;]         z                      j                      ;   T         opp-table            !operating-points-v2                  ;      opp-792000000               /4          B@ ~          I                             opp-996000000               ;]                     I                             opp-1200000000              G          ( O          I                                clock-cki            !fixed-clock                     S            ckil            ;   #      clock-osc            !fixed-clock                     Sn6          osc         ;   $      usbphynop1           !usb-nop-xceiv           c           	  3main_clk            ?            ;   ?      usbphynop3           !usb-nop-xceiv           c      n      	  3main_clk            J           ?            ;   C      pmu          !arm,cortex-a7-pmu           X           i       \           t         replicator            !arm,coresight-static-replicator    out-ports                                port@0          O       endpoint               	        ;            port@1          O      endpoint               
        ;               in-ports       port       endpoint                       ;                  timer            !arm,armv7-timer                  X         0  i                              
        csi-mux       
   !video-mux                                                  	  disabled       port@0          O          port@1          O      endpoint                       ;   /         port@2          O      endpoint                       ;   +            soc                                   !simple-bus          X               sram@900000       
   !mmio-sram           O                                                         c           funnel@30041000       +   !arm,coresight-dynamic-funnel arm,primecell          O0            c      J      	  3apb_pclk       in-ports                                 port@0          O       endpoint                       ;            port@1          O      endpoint                       ;   U            out-ports      port       endpoint                       ;                  etm@3007c000          "   !arm,coresight-etm3x arm,primecell           O0                       c      J      	  3apb_pclk       out-ports      port       endpoint                       ;                  funnel@30083000       +   !arm,coresight-dynamic-funnel arm,primecell          O00            c      J      	  3apb_pclk       in-ports                                 port@0          O       endpoint                       ;            port@1          O      endpoint                out-ports      port       endpoint                       ;                  etf@30084000              !arm,coresight-tmc arm,primecell         O0@            c      J      	  3apb_pclk       in-ports       port       endpoint                       ;               out-ports      port       endpoint                       ;                  etr@30086000              !arm,coresight-tmc arm,primecell         O0`            c      J      	  3apb_pclk       in-ports       port       endpoint                       ;   
               tpiu@30087000         !   !arm,coresight-tpiu arm,primecell            O0p            c      J      	  3apb_pclk       in-ports       port       endpoint                       ;   	               interrupt-controller@31001000            !arm,cortex-a7-gic           i      	                              X            O1     1       1 @     1 `             ;         bus@30000000             !fsl,aips-bus simple-bus                                  O0    @              gpio@30200000            !fsl,imx7d-gpio fsl,imx35-gpio           O0              i       @          A                                                                                       ;   Y      gpio@30210000            !fsl,imx7d-gpio fsl,imx35-gpio           O0!             i       B          C                                                                          ;   9      gpio@30220000            !fsl,imx7d-gpio fsl,imx35-gpio           O0"             i       D          E                                                              -           ;   <      gpio@30230000            !fsl,imx7d-gpio fsl,imx35-gpio           O0#             i       F          G                                                              J           ;   K      gpio@30240000            !fsl,imx7d-gpio fsl,imx35-gpio           O0$             i       H          I                                                              b           ;   F      gpio@30250000            !fsl,imx7d-gpio fsl,imx35-gpio           O0%             i       J          K                                                              t         gpio@30260000            !fsl,imx7d-gpio fsl,imx35-gpio           O0&             i       L          M                                                                       watchdog@30280000            !fsl,imx7d-wdt fsl,imx21-wdt         O0(             i       N           c     B        (default         6           okay          watchdog@30290000            !fsl,imx7d-wdt fsl,imx21-wdt         O0)             i       O           c           	  disabled          watchdog@302a0000            !fsl,imx7d-wdt fsl,imx21-wdt         O0*             i       
           c           	  disabled          watchdog@302b0000            !fsl,imx7d-wdt fsl,imx21-wdt         O0+             i       m           c           	  disabled          pinctrl@302c0000             !fsl,imx7d-iomuxc-lpsr           O0,             @           (default         6           ;      hoggrp        0  N      8               }      <              }        ;         backlightj9grp          N      L               }        ;   X      pwm1grp         N      4              }        ;   )      usbotg1grp        0  N      @  ,         }      D                       ;   B      wdog1grp            N       0              u        ;            timer@302d0000           !fsl,imx7d-gpt fsl,imx6dl-gpt            O0-             i       7           c     .     .        3ipg per       timer@302e0000           !fsl,imx7d-gpt fsl,imx6dl-gpt            O0.             i       6           c     2     2        3ipg per       	  disabled          timer@302f0000           !fsl,imx7d-gpt fsl,imx6dl-gpt            O0/             i       5           c     6     6        3ipg per       	  disabled          timer@30300000           !fsl,imx7d-gpt fsl,imx6dl-gpt            O00             i       4           c     :     :        3ipg per       	  disabled          keypad@30320000          !fsl,imx7d-kpp fsl,imx21-kpp         O02             i       P           c           	  disabled          pinctrl@30330000             !fsl,imx7d-iomuxc            O03             (default         6              ;      hoggrp        H  N    l              ]   (                 }                  }        ;         enet1grp           N     t  h                x                 $  |  d            X                 q  D                 q  H                 q  L                 q  P                 q  T                 q  @                 q  ,                   0                   4                   8                 q  <                     h              u        ;   M      flexcan2grp       H  N   ,              }   0                }   l                }        ;   4      i2c1grp       0  N  L           @    H           @          ;   6      i2c2grp       0  N  T           @    P           @          ;   7      i2c2-rv4162grp          N   p                }        ;   8      i2c3grp       0  N  \           @    X           @          ;   :      i2c3tsc2004grp        0  N     4              y                   }        ;   ;      i2c4grp       0  N  d           @    `           @          ;   =      j2grp        H  N    |              }                   }     p              }                   }                  }                   }                   }    $              }   P                }   T                }   X                }   \                }   `                }   d                }    x              }   h                }    t              }                  }                   }  $                }                   }                   }  (                }                   }                   }                   }                  }                   }                    }                   }   t                }   x                }   |                }                   }                    }        ;         lcdifdatgrp      @  N     8  8          y     <  <          y     @  @          y     D  D          y     H  H          y     L  L          y     P  P          y     T  T          y     X  X          y     \  \          y     `  `          y     d  d          y     h  h          y     l  l          y     p  p          y    t  t          y    x  x          y    |  |          y                y                y                y                y                 y  $              y      lcdifctrlgrp          `  N     $               y     (               y     0            y     ,               y      pwm2grp         N     p              }        ;   *      uart1grp          0  N  ,                 y  (               y        ;   0      uart2grp          0  N  4                 y  0              y        ;   1      uart3grp          H  N  <                 y  8              y   D                }        ;   2      uart6grp          `  N  l                y  h             y  t                y  p             y        ;   >      usbotg2grp        0  N  @    (          }  D                        ;   R      usdhc1grp           N                   Y                                      Y                   Y                   Y                   Y     l              u                  u        ;   E      usdhc2grp           N    ,               Y    (                   0               Y    4               Y    8               Y    <               Y  x                Y  |                Y        ;   H      usdhc3grp           N    D               Y    @                   H               Y    L               Y    P               Y    T               Y    X               Y    \               Y    `               Y    d               Y        ;   L         iomuxc-gpr@30340000       <   !fsl,imx7d-iomuxc-gpr fsl,imx6q-iomuxc-gpr syscon simple-mfd         O04             ;   3   mux-controller        	   !mmio-mux            W           j              ;            efuse@30350000                                    !fsl,imx7d-ocotp syscon          O05             c        calib@3c            O   <           ;   !      fuse-grade@10           O              ;            anatop@30360000       4   !fsl,imx7d-anatop fsl,imx6q-anatop syscon simple-mfd         O06             i       1          3           ;       regulator-vdd1p0d            !fsl,anatop-regulator            xvdd1p0d          5          O                                                    5          O        ,            ;   %      regulator-vdd1p2             !fsl,anatop-regulator            xvdd1p2                                                                                            ,            ;   &      tempmon          !fsl,imx7d-tempmon           X           i       1           >               !           calib temp_grade            c              J             snvs@30370000         #   !fsl,sec-v4.0-mon syscon simple-mfd          O07             ;   "   snvs-rtc-lp          !fsl,sec-v4.0-mon-rtc-lp         `   "           4        i                            c           	  3snvs-rtc          snvs-poweroff            !syscon-poweroff         `   "           8        g   `        m   `      	  disabled          snvs-powerkey            !fsl,sec-v4.0-pwrkey         `   "        i                  c             3snvs-pwrkey         r   t               	  disabled             clock-controller@30380000            !fsl,imx7d-ccm           O08             i       U          V                      c   #   $      	  3ckil osc                 U     W                                    ;         reset-controller@30390000            !fsl,imx7d-src syscon            O09             i       Y                      ;   .      gpc@303a0000             !fsl,imx7d-gpc           O0:                      i       W                      X           ;      pgc                              power-domain@0                      O               %        ;   -      power-domain@1                      O              %        ;   V      power-domain@2                      O              &        ;                  bus@30400000             !fsl,aips-bus simple-bus                                  O0@   @              adc@30610000             !fsl,imx7d-adc           O0a             i       b           c             3adc                    okay            
   '      adc@30620000             !fsl,imx7d-adc           O0b             i       c           c             3adc                    okay            
   '      spi@30630000                                        !fsl,imx7d-ecspi fsl,imx51-ecspi         O0c             i       "           c     
     
        3ipg per         rx tx                (            (               	  disabled          pwm@30640000             !fsl,vf610-ftm-pwm           O0d             %           i                '  3ftm_sys ftm_ext ftm_fix ftm_cnt_clk_en           c                          	  disabled          pwm@30650000             !fsl,vf610-ftm-pwm           O0e             %           i                '  3ftm_sys ftm_ext ftm_fix ftm_cnt_clk_en           c     "     "     "     "      	  disabled          pwm@30660000             !fsl,imx7d-pwm fsl,imx27-pwm         O0f             i       Q           c                  3ipg per         %           okay            (default         6   )        ;   Z      pwm@30670000             !fsl,imx7d-pwm fsl,imx27-pwm         O0g             i       R           c                  3ipg per         %           okay            (default         6   *      pwm@30680000             !fsl,imx7d-pwm fsl,imx27-pwm         O0h             i       S           c                  3ipg per         %         	  disabled          pwm@30690000             !fsl,imx7d-pwm fsl,imx27-pwm         O0i             i       T           c                  3ipg per         %         	  disabled          csi@30710000             !fsl,imx7-csi            O0q             i                  c     F        3mclk          	  disabled       port       endpoint               +        ;               lcdif@30730000        !   !fsl,imx7d-lcdif fsl,imx6sx-lcdif            O0s             i                  c      ~      ~        3pix axi         okay       port       endpoint               ,        ;   ]            mipi-csi@30750000            !fsl,imx7-mipi-csi2          O0u             i                  c                         3pclk wrap phy           J   -        0   %        ;   .         	  disabled       ports                                port@0          O          port@1          O      endpoint               /        ;                  dsi@30760000          )   !fsl,imx7d-mipi-dsim fsl,imx8mm-mipi-dsim                                      O0v             c                    3bus_clk sclk_mipi                                                 -@        J   -        i       )           B5        `1-         |n6       	  disabled          pcie-phy@306d0000            !fsl,imx7d-pcie-phy          O0m           	  disabled            ;   W      pxp@30700000             !fsl,imx7d-pxp           O0p             i                 .           c             3axi          bus@30800000             !fsl,aips-bus simple-bus                                  O0   @              spba-bus@30800000            !fsl,spba-bus simple-bus                                  O0                 spi@30820000                                        !fsl,imx7d-ecspi fsl,imx51-ecspi         O0             i                  c                    3ipg per         rx tx                (             (               	  disabled          spi@30830000                                        !fsl,imx7d-ecspi fsl,imx51-ecspi         O0             i                   c                  3ipg per         rx tx                (            (               	  disabled          spi@30840000                                        !fsl,imx7d-ecspi fsl,imx51-ecspi         O0             i       !           c                  3ipg per         rx tx                (            (               	  disabled          serial@30860000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i                  c                    3ipg per         okay            (default         6   0                                   serial@30890000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i                  c                    3ipg per         okay            (default         6   1                                   serial@30880000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i                  c                    3ipg per         okay            (default         6   2                                   sai@308a0000                         !fsl,imx7d-sai fsl,imx6sx-sai            O0             i       _            c                             3bus mclk1 mclk2 mclk3           rx tx                (             (   	             	  disabled          sai@308b0000                         !fsl,imx7d-sai fsl,imx6sx-sai            O0             i       `            c                             3bus mclk1 mclk2 mclk3           rx tx                (   
          (                	  disabled          sai@308c0000                         !fsl,imx7d-sai fsl,imx6sx-sai            O0             i       2            c                             3bus mclk1 mclk2 mclk3           rx tx                (             (                	  disabled             crypto@30900000          !fsl,sec-v4.0                                     O0                 0             i       [           c           Z      	  3ipg aclk       jr@1000          !fsl,sec-v4.0-job-ring           O              i       i         jr@2000          !fsl,sec-v4.0-job-ring           O               i       j         jr@3000          !fsl,sec-v4.0-job-ring           O  0            i       r            can@30a00000          $   !fsl,imx7d-flexcan fsl,imx6q-flexcan         O0             i       n           c                   3ipg per            3            	  disabled          can@30a10000          $   !fsl,imx7d-flexcan fsl,imx6q-flexcan         O0             i       o           c                   3ipg per            3              okay            (default         6   4           5      i2c@30a20000                                       !fsl,imx7d-i2c fsl,imx21-i2c         O0             i       #           c              okay            (default         6   6   pmic@8           !fsl,pfuze3000           O      regulators     sw1a             
`                                     j        ;         sw1b             
`                                     j      sw2          `         :                        sw3                   -P                        swbst            LK@         N0      vsnvs            B@         -                        vrefddr                         vldo1            w@         2Z               vldo2            5                         vccsd            +|         2Z                 ;   G      v33          +|         2Z               vldo3            w@         2Z               vldo4            w@         2Z                        i2c@30a30000                                       !fsl,imx7d-i2c fsl,imx21-i2c         O0             i       $           c              okay            (default         6   7   rtc@68           !microcrystal,rv4162         (default         6   8        O   h           9               i2c@30a40000                                       !fsl,imx7d-i2c fsl,imx21-i2c         O0             i       %           c              okay            (default         6   :   touchscreen@48           !ti,tsc2004          O   H        (default         6   ;           <                 <               i2c@30a50000                                       !fsl,imx7d-i2c fsl,imx21-i2c         O0             i       &           c              okay            (default         6   =   wm8960@1a            !wlf,wm8960          O           c     M        3mclk             "         serial@30a60000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i                  c                    3ipg per       	  disabled          serial@30a70000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i                  c                    3ipg per       	  disabled          serial@30a80000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i                  c                    3ipg per         okay            (default         6   >                                     3      serial@30a90000          !fsl,imx7d-uart fsl,imx6q-uart           O0             i       ~           c                    3ipg per       	  disabled          mailbox@30aa0000             !fsl,imx7s-mu fsl,imx6sx-mu          O0             i       X           c             C         	  disabled          mailbox@30ab0000             !fsl,imx7s-mu fsl,imx6sx-mu          O0             i       a           c             C            O      	  disabled          usb@30b10000             !fsl,imx7d-usb fsl,imx27-usb         O0             i       +           c             ]   ?        h   @            t          okay               A        (default         6   B      usb@30b30000             !fsl,imx7d-usb fsl,imx27-usb         O0             i       (           c             ]   C        h   D            hsic            host            t        	  disabled          usbmisc@30b10200                     $   !fsl,imx7d-usbmisc fsl,imx6q-usbmisc         O0            ;   @      usbmisc@30b30200                     $   !fsl,imx7d-usbmisc fsl,imx6q-usbmisc         O0            ;   D      mmc@30b40000          !   !fsl,imx7d-usdhc fsl,imx6sl-usdhc            O0             i                  c           V              3ipg ahb per                                          okay            (default         6   E           F                  G                        mmc@30b50000          !   !fsl,imx7d-usdhc fsl,imx6sl-usdhc            O0             i                  c           V              3ipg ahb per                                          okay                                      (default         6   H                    I           J         &            wlcore@2          
   !ti,wl1271           O           X   K        i              9I          mmc@30b60000          !   !fsl,imx7d-usdhc fsl,imx6sl-usdhc            O0             i                  c           V              3ipg ahb per                                          okay            (default         6   L                      ׄ                spi@30bb0000             !fsl,imx7d-qspi          O0     `              MQuadSPI QuadSPI-memory                                    i       k           c                    3qspi_en qspi          	  disabled          dma-controller@30bd0000          !fsl,imx7d-sdma fsl,imx35-sdma           O0             i                  c                  3ipg ahb         W           bimx/sdma/sdma-imx7d.bin         ;   (      ethernet@30be0000            !fsl,imx7d-fec fsl,imx6sx-fec            O0             {int0 int1 int2 pps        0  i       x          v          w          y         (  c            R            *            "  3ipg ahb ptp enet_clk_ref enet_out                                    3              okay            (default         6   M                                  +                     rgmii              N            mdio                                 ethernet-phy@4          O           ;   N            usb@30b20000             !fsl,imx7d-usb fsl,imx27-usb         O0             i       *           c             ]   O        h   P            t          okay               Q        (default         6   R        host          usbmisc@30b20200                     $   !fsl,imx7d-usbmisc fsl,imx6q-usbmisc         O0            ;   P      ethernet@30bf0000            !fsl,imx7d-fec fsl,imx6sx-fec            O0             {int0 int1 int2 pps        0  i       f          d          e          g         (  c            R            *            "  3ipg ahb ptp enet_clk_ref enet_out                                    3            	  disabled             dma-controller@33000000       &   !fsl,imx7d-dma-apbh fsl,imx28-dma-apbh           O3             0  i                                                W                      c             ;   S      nand-controller@33002000             !fsl,imx7d-gpmi-nand                                   O3       3 @   @         Mgpmi-nand bch           i                  {bch         c                  3gpmi_io gpmi_bch_apb                S            rx-tx         	  disabled                                (      etm@3007d000          "   !arm,coresight-etm3x arm,primecell           O0             V           T        c      J      	  3apb_pclk       out-ports      port       endpoint               U        ;                  pcie@33800000            !fsl,imx7d-pcie          O3    @ O             Mdbi config                                   Cpci                      0  ρ           O                @   @                            i       z           {msi                                                                    }                            |                            {                            z           c      r      +      v        3pcie pcie_bus pcie_phy                s      w              )      +        -           J   V        ;   .      .      .           @pciephy apps turnoff            L   W      	  disabled             usbphynop2           !usb-nop-xceiv           c           	  3main_clk            ?            ;   O      memory@80000000         Cmemory          O   @         backlight-j9             !gpio-backlight          (default         6   X           Y                _      backlight-j20            !pwm-backlight           j   Z     LK@             o                    @                         okay            ;   [      panel-lcd            !okaya,rs800480t-7x0gp              [           \   port       endpoint               ]        ;   ,            regulator-usb-otg1-vbus          !regulator-fixed         xusb_otg1_vbus            LK@         LK@           Y                        ;   A      regulator-usb-otg2-vbus          !regulator-fixed         xusb_otg2_vbus            LK@         LK@           K                        ;   Q      regulator-3v3            !regulator-fixed         xreg-3v3          2Z         2Z        ;   \      regulator-can2-3v3           !regulator-fixed       	  xcan2-3v3             2Z         2Z           9              ;   5      regulator-vref-1v8           !regulator-fixed       	  xvref-1v8             w@         w@        ;   '      regulator-vref-3v3           !regulator-fixed       	  xvref-3v3             2Z         2Z      regulator-wlan           !regulator-fixed          2Z         2Z      	  xreg_wlan             p           K                        ;   I      usdhc2_pwrseq            !mmc-pwrseq-simple           c     W      
  3ext_clock           ;   J         	#address-cells #size-cells model compatible gpio0 gpio1 gpio2 gpio3 gpio4 gpio5 gpio6 i2c0 i2c1 i2c2 i2c3 mmc0 mmc1 mmc2 serial0 serial1 serial2 serial3 serial4 serial5 serial6 spi0 spi1 spi2 spi3 usb0 usb1 usb2 entry-method arm,psci-suspend-param local-timer-stop entry-latency-us exit-latency-us min-residency-us phandle device_type reg clock-frequency clocks cpu-idle-states operating-points-v2 #cooling-cells nvmem-cells nvmem-cell-names cpu-supply opp-shared opp-hz opp-microvolt clock-latency-ns opp-supported-hw opp-suspend #clock-cells clock-output-names clock-names #phy-cells power-domains interrupt-parent interrupts interrupt-affinity remote-endpoint arm,cpu-registers-not-fw-configured mux-controls status ranges cpu #interrupt-cells interrupt-controller gpio-controller #gpio-cells gpio-ranges pinctrl-names pinctrl-0 fsl,input-sel fsl,pins #mux-control-cells mux-reg-masks regulator-name regulator-min-microvolt regulator-max-microvolt anatop-reg-offset anatop-vol-bit-shift anatop-vol-bit-width anatop-min-bit-val anatop-min-voltage anatop-max-voltage anatop-enable-bit fsl,tempmon #thermal-sensor-cells regmap value mask linux,keycode wakeup-source assigned-clocks assigned-clock-parents assigned-clock-rates #reset-cells #power-domain-cells power-supply #io-channel-cells vref-supply dma-names dmas #pwm-cells phy-supply resets samsung,burst-clock-frequency samsung,esc-clock-frequency samsung,pll-clock-frequency #sound-dai-cells fsl,stop-mode xceiver-supply regulator-boot-on regulator-always-on regulator-ramp-delay interrupts-extended wakeup-gpios wlf,shared-lrclk uart-has-rtscts #mbox-cells fsl,mu-side-b fsl,usbphy fsl,usbmisc phy-clkgate-delay-us vbus-supply phy_type dr_mode #index-cells bus-width fsl,tuning-step fsl,tuning-start-tap cd-gpios vmmc-supply keep-power-in-suspend non-removable mmc-pwrseq cap-power-off-card ref-clock-frequency reg-names #dma-cells fsl,sdma-ram-script-name interrupt-names fsl,num-tx-queues fsl,num-rx-queues phy-mode phy-handle fsl,magic-packet dma-channels arm,primecell-periphid bus-range num-lanes interrupt-map-mask interrupt-map fsl,max-link-speed reset-names fsl,imx7d-pcie-phy default-on pwms brightness-levels default-brightness-level backlight gpio enable-active-high startup-delay-us 