     8     (            
                                                           SKOV IMX6 CPU SoloCore        %   !skov,imx6dl-skov-revc-lt6 fsl,imx6dl       chosen            ,/soc/bus@2100000/serial@21e8000       aliases       "   8/soc/bus@2100000/ethernet@2188000            B/soc/bus@2000000/can@2090000             G/soc/bus@2000000/can@2094000             L/soc/bus@2000000/gpio@209c000            R/soc/bus@2000000/gpio@20a0000            X/soc/bus@2000000/gpio@20a4000            ^/soc/bus@2000000/gpio@20a8000            d/soc/bus@2000000/gpio@20ac000            j/soc/bus@2000000/gpio@20b0000            p/soc/bus@2000000/gpio@20b4000            v/soc/bus@2100000/i2c@21a0000             {/soc/bus@2100000/i2c@21a4000             /soc/bus@2100000/i2c@21a8000             /soc/ipu@2400000             /soc/bus@2100000/mmc@2190000             /soc/bus@2100000/mmc@2194000             /soc/bus@2100000/mmc@2198000             /soc/bus@2100000/mmc@219c000          1   /soc/bus@2000000/spba-bus@2000000/serial@2020000              /soc/bus@2100000/serial@21e8000           /soc/bus@2100000/serial@21ec000           /soc/bus@2100000/serial@21f0000           /soc/bus@2100000/serial@21f4000       .   /soc/bus@2000000/spba-bus@2000000/spi@2008000         .   /soc/bus@2000000/spba-bus@2000000/spi@200c000         .   /soc/bus@2000000/spba-bus@2000000/spi@2010000         .   /soc/bus@2000000/spba-bus@2000000/spi@2014000            /soc/bus@2100000/usb@2184200             /soc/bus@2100000/usb@2184000             /soc/bus@2100000/usb@2184400             /soc/bus@2100000/usb@2184600              /soc/bus@2000000/usbphy@20c9000           /soc/bus@2000000/usbphy@20ca000          /soc/bus@2100000/i2c@21f8000            /mdio/switch@0/ports/ports@0            /mdio/switch@0/ports/ports@1            /mdio           "/soc/nand-controller@112000       $  '/soc/bus@2100000/i2c@21a8000/rtc@51         ,/soc/bus@2000000/snvs@20cc000           1/mdio/switch@0        clocks     ckil             !fixed-clock         9            F         ckih1            !fixed-clock         9            F          osc          !fixed-clock         9            Fn6          ldb                                    !fsl,imx6q-ldb fsl,imx53-ldb         V         	  Zdisabled          0  a      !      "      '      (                  (  hdi0_pll di1_pll di0_sel di1_sel di0 di1    lvds-channel@0                                    t          	  Zdisabled       port@0          t       endpoint            x              M         port@1          t      endpoint            x              Q            lvds-channel@1                                    t         	  Zdisabled       port@0          t       endpoint            x              N         port@1          t      endpoint            x              R               pmu          !arm,cortex-a9-pmu                             ^         usbphynop1           !usb-nop-xceiv                     	  Zdisabled               4      usbphynop2           !usb-nop-xceiv                     	  Zdisabled               5      soc                                   !simple-bus                         dma-controller@110000         &   !fsl,imx6q-dma-apbh fsl,imx28-dma-apbh           t             0                                                                        a      j                 nand-controller@112000           !fsl,imx6q-gpmi-nand         t        @             gpmi-nand bch                             bch       (  a                                    0  hgpmi_io gpmi_apb gpmi_bch gpmi_bch_apb per1_bch                        rx-tx           Zokay            default            	                                         hdmi@120000         t                     s           V           a      {      |      
  hiahb isfr         	  Zdisabled             !fsl,imx6dl-hdmi    ports                                port@0          t       endpoint            x   
           K         port@1          t      endpoint            x              O               gpu@130000           !vivante,gc          t     @                	           a            z      J        hbus core shader         )           7         gpu@134000           !vivante,gc          t @   @                
           a            y      	  hbus core            )           7         timer@a00600             !arm,cortex-a9-twd-timer         t                                         a            interrupt-controller@a01000          !arm,cortex-a9-gic           F            W        t                                      cache-controller@a02000          !arm,pl310-cache         t                     \            l        z                                                         S      pcie@1ffc000             !fsl,imx6q-pcie          t   @              dbi config                                   pci                      0                                                                    x           msi         F                                                           {                            z                            y                            x           a                          hpcie pcie_bus pcie_phy        	  Zdisabled          bus@2000000          !fsl,aips-bus simple-bus                                  t                  spba-bus@2000000             !fsl,spba-bus simple-bus                                  t                  spdif@2004000            !fsl,imx35-spdif         t @   @                4                                              rx tx         P  a                        k             v      >                          :  hcore rxtx0 rxtx1 rxtx2 rxtx3 rxtx4 rxtx5 rxtx6 rxtx7 spba         	  Zdisabled          spi@2008000                                     !fsl,imx6q-ecspi fsl,imx51-ecspi         t    @                           a      p      p        hipg per                                          rx tx           Zokay            default                                flash@0          !jedec,spi-nor           7        t             spi@200c000                                     !fsl,imx6q-ecspi fsl,imx51-ecspi         t    @                            a      q      q        hipg per                                          rx tx           Zokay            default                                adc@0            !microchip,mcp3002           t                        B@        #              [         spi@2010000                                     !fsl,imx6q-ecspi fsl,imx51-ecspi         t    @                !           a      r      r        hipg per                                          rx tx         	  Zdisabled          spi@2014000                                     !fsl,imx6q-ecspi fsl,imx51-ecspi         t@   @                "           a      s      s        hipg per                	            
              rx tx           Zokay            default                                adc@0            !ti,tsc2046e-adc         t                       default          B@        5                 #                                        f   channel@1           t           I          Z         channel@3           t           I          Z         channel@4           t           I          Z         channel@5           t           I          Z               serial@2020000           !fsl,imx6q-uart fsl,imx21-uart           t    @                           a                    hipg per                                            rx tx         	  Zdisabled          esai@2024000            m             !fsl,imx35-esai          t@   @                3            a            v                    hcore extal fsys spba                                               rx tx         	  Zdisabled          ssi@2028000         m             !fsl,imx6q-ssi fsl,imx51-ssi         t   @                .           a                  	  hipg baud                   %             &               rx tx           ~         	  Zdisabled          ssi@202c000         m             !fsl,imx6q-ssi fsl,imx51-ssi         t   @                /           a                  	  hipg baud                   )             *               rx tx           ~         	  Zdisabled          ssi@2030000         m             !fsl,imx6q-ssi fsl,imx51-ssi         t    @                0           a                  	  hipg baud                   -             .               rx tx           ~         	  Zdisabled          asrc@2034000             !fsl,imx53-asrc          t@   @                2           a                                                                                                             k                            hmem ipg asrck_0 asrck_1 asrck_2 asrck_3 asrck_4 asrck_5 asrck_6 asrck_7 asrck_8 asrck_9 asrck_a asrck_b asrck_c asrck_d asrck_e asrck_f spba          `                                                                                  rxa rxb rxc txa txb txc                              Zokay          spba-bus@203c000            t   @          vpu@2040000          !fsl,imx6dl-vpu cnm,coda960          t                                      	  bit jpeg            a                    hper ahb         )                                  aipstz@207c000          t   @       pwm@2080000                     !fsl,imx6q-pwm fsl,imx27-pwm         t    @                S           a      >              hipg per       	  Zdisabled          pwm@2084000                     !fsl,imx6q-pwm fsl,imx27-pwm         t@   @                T           a      >              hipg per         Zokay            default                       i      pwm@2088000                     !fsl,imx6q-pwm fsl,imx27-pwm         t   @                U           a      >              hipg per         Zokay            default                       c      pwm@208c000                     !fsl,imx6q-pwm fsl,imx27-pwm         t   @                V           a      >              hipg per       	  Zdisabled          can@2090000          !fsl,imx6q-flexcan           t	    @                n           a      l      m        hipg per               4           Zokay            default                             can@2094000          !fsl,imx6q-flexcan           t	@   @                o           a      n      o        hipg per               4           Zokay            default                             timer@2098000            !fsl,imx6dl-gpt          t	   @                7           a      w      x              hipg per osc_per       gpio@209c000             !fsl,imx6q-gpio fsl,imx35-gpio           t	   @                B          C                                W        F        @                                 
                                                                                                                           {            y                        ~                                                z              \      gpio@20a0000             !fsl,imx6q-gpio fsl,imx35-gpio           t
    @                D          E                                W        F                                             J            I            H            G            F            E            D            O            v            u            q                    gpio@20a4000             !fsl,imx6q-gpio fsl,imx35-gpio           t
@   @                F          G                                W        F         @            a            i         
   c            Q                    gpio@20a8000             !fsl,imx6q-gpio fsl,imx35-gpio           t
   @                H          I                                W        F                                                                 	            
                                                                           '            8            =            .              b      gpio@20ac000             !fsl,imx6q-gpio fsl,imx35-gpio           t
   @                J          K                                W        F                     x            M            L            /   	         9            %            $            #            &                                 gpio@20b0000             !fsl,imx6q-gpio fsl,imx35-gpio           t    @                L          M                                W        F                                 K                                 	            
                                                                                                                                                   N              h      gpio@20b4000             !fsl,imx6q-gpio fsl,imx35-gpio           t@   @                N          O                                W        F                                                                                          	            
                             9      keypad@20b8000           !fsl,imx6q-kpp fsl,imx21-kpp         t   @                R           a      >      	  Zdisabled          watchdog@20bc000             !fsl,imx6q-wdt fsl,imx21-wdt         t   @                P           a      >      watchdog@20c0000             !fsl,imx6q-wdt fsl,imx21-wdt         t    @                Q           a      >      	  Zdisabled          clock-controller@20c4000             !fsl,imx6q-ccm           t@   @                W          X           9           a           henet_ref_pad                 
                            anatop@20c8000        #   !fsl,imx6q-anatop syscon simple-mfd          t          $         1          6                            regulator-1p1            !fsl,anatop-regulator            -vdd1p1          < B@        T O         l                                                    5                            regulator-3p0            !fsl,anatop-regulator            -vdd3p0          < *        T 0         l                                                      (         3@                  regulator-2p5            !fsl,anatop-regulator            -vdd2p5          < "U        T )0         l          0                                                      +x                  regulator-vddcore            !fsl,anatop-regulator            -vddarm          <         T           l          @                                 p                   6                                            T      regulator-vddpu          !fsl,anatop-regulator            -vddpu           <         T          M  |          @           	                     p                   6                                            $      regulator-vddsoc             !fsl,anatop-regulator            -vddsoc          <         T           l          @                                p                   6                                            U      tempmon          !fsl,imx6q-tempmon                             1           i            u   !   "        calib temp_grade            a                           usbphy@20c9000        "   !fsl,imx6q-usbphy fsl,imx23-usbphy           t                   ,           a                             0      usbphy@20ca000        "   !fsl,imx6q-usbphy fsl,imx23-usbphy           t                   -           a                             3      snvs@20cc000          #   !fsl,sec-v4.0-mon syscon simple-mfd          t   @            #   snvs-rtc-lp          !fsl,sec-v4.0-mon-rtc-lp            #           4                                  snvs-poweroff            !syscon-poweroff            #           8           `           `      	  Zdisabled          snvs-powerkey            !fsl,sec-v4.0-pwrkey            #                             t               	  Zdisabled          snvs-lpgpr           !fsl,imx6q-snvs-lpgpr             epit@20d0000            t    @                8         epit@20d4000            t@   @                9         reset-controller@20d8000             !fsl,imx6q-src fsl,imx51-src         t   @                [          `                               gpc@20dc000          !fsl,imx6q-gpc           t   @          W        F                  Y                      a      >        hipg               pgc                              power-domain@0          t                      power-domain@1          t                          $      0  a      z      J      y                                         iomuxc-gpr@20e0000        '   !fsl,imx6q-iomuxc-gpr syscon simple-mfd          t     8              mux-controller        	   !mmio-mux            
         8     4      4   8                     (      (              %      ipu1_csi0_mux         
   !video-mux           +   %                                 port@0          t       endpoint            x   &           =         port@1          t      endpoint            x   '           ?         port@2          t      endpoint            x   (           A         port@3          t      endpoint            x   )           C         port@4          t      endpoint             port@5          t      endpoint            x   *           H            ipu1_csi1_mux         
   !video-mux           +   %                                port@0          t       endpoint            x   +           >         port@1          t      endpoint            x   ,           @         port@2          t      endpoint            x   -           B         port@3          t      endpoint            x   .           D         port@4          t      endpoint             port@5          t      endpoint            x   /           I               pinctrl@20e0000          !fsl,imx6dl-iomuxc           t    @               can1grp       0  8  8               0  <                              can1stbygrp         8    P            0           `      can2grp       0  8  T  <              0  h  P                             can2stbygrp         8  `  H            0           a      ecspi1grp         `  8  H              L               D               d  4              X                 ecspi2grp         `  8                @               <                               X                 enetgrp         8      (                                                                                                           0                 X                 08           7      gpminandgrp      h  8  p  X                l  T                                   t  \                x  `                <  $               8                    l                  p                  t                  x                  |                                                                               	      i2c3grp       0  8  (    x      @x  4    |      @x           <      mdiogrp       0  8                                              ]      pwm2grp         8                  X                 pwm3grp         8                  X                 switchgrp           8  |  L                         ^      uart2grp          0  8  l  <              p  @  	                  G      usdhc3grp           8                 pY      	4         Y                 pY                  pY                 pY                  pY  $              @  (              @           8      vccmmcgrp           8  4                X           d      vccmmciogrp         8                  X           e      ecspi4grp         `  8  t  D               \  ,                X  (                T  $           @  X                 touchgrp            8  P                @                 backlightgrp            8                  X           g      ipu1grp        8                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          k         dcic@20e4000            t@   @                |         dcic@20e8000            t   @                }         dma-controller@20ec000           !fsl,imx6q-sdma fsl,imx35-sdma           t   @                           a      >              hipg ahb                    Aimx/sdma/sdma-imx6q.bin                  pxp@20f0000         t    @                b         epdc@20f4000            t@   @                a            bus@2100000          !fsl,aips-bus simple-bus                                  t                 crypto@2100000           !fsl,sec-v4.0                                     t                               a                                hmem aclk ipg emi_slow      jr@1000          !fsl,sec-v4.0-job-ring           t                     i         jr@2000          !fsl,sec-v4.0-job-ring           t                      j            aipstz@217c000          t   @       usb@2184000          !fsl,imx6q-usb fsl,imx27-usb         t@                   +           a              Z   0        e   1            q                                  Zokay               2               usb@2184200          !fsl,imx6q-usb fsl,imx27-usb         tB                   (           a              Z   3        e   1           host            q                                  Zokay               2               usb@2184400          !fsl,imx6q-usb fsl,imx27-usb         tD                   )           a              Z   4        hsic            e   1           host            q                                	  Zdisabled          usb@2184600          !fsl,imx6q-usb fsl,imx27-usb         tF                   *           a              Z   5        hsic            e   1           host            q                                	  Zdisabled          usbmisc@2184800                     !fsl,imx6q-usbmisc           tH            a                 1      ethernet@2188000             !fsl,imx6q-fec           t   @       	  int0 pps                   v          w            a      u      u           
        hipg ahb ptp enet_clk_ref                  4           u   6        mac-address         Zokay            default            7        rmii                          _   fixed-link             d                  mlb@218c000         t   @       $         5          u          ~         mmc@2190000          !fsl,imx6q-usdhc         t    @                           a                          hipg ahb per                  	  Zdisabled          mmc@2194000          !fsl,imx6q-usdhc         t@   @                           a                          hipg ahb per                  	  Zdisabled          mmc@2198000          !fsl,imx6q-usdhc         t   @                           a                          hipg ahb per                    Zokay            default            8           9               "   9                +         >        	         M         ^         k         x                             :           ;      mmc@219c000          !fsl,imx6q-usdhc         t   @                           a                          hipg ahb per                  	  Zdisabled          i2c@21a0000                                    !fsl,imx6q-i2c fsl,imx21-i2c         t    @                $           a      }      	  Zdisabled          i2c@21a4000                                    !fsl,imx6q-i2c fsl,imx21-i2c         t@   @                %           a      ~      	  Zdisabled          i2c@21a8000                                    !fsl,imx6q-i2c fsl,imx21-i2c         t   @                &           a              Zokay            default            <        F    rtc@51           !nxp,pcf85063            t   Q          0         romcp@21ac000           t   @       memory-controller@21b0000            !fsl,imx6q-mmdc          t    @         a           memory-controller@21b4000            !fsl,imx6q-mmdc          t@   @       	  Zdisabled          memory-controller@21b8000                                     !fsl,imx6q-weim          t   @                           a                       	  Zdisabled          efuse@21bc000            !fsl,imx6q-ocotp syscon          t   @         a                                  speed-grade@10          t                 V      calib@38            t   8              !      temp-grade@20           t                  "      mac-addr@88         t                 6         tzasc@21d0000           t    @                l         tzasc@21d4000           t@   @                m         audmux@21d8000        "   !fsl,imx6q-audmux fsl,imx31-audmux           t   @       	  Zdisabled          mipi@21dc000             !fsl,imx6-mipi-csi2          t   @                                          d          e           a                  a        hdphy ref pix          	  Zdisabled       port@1          t                                endpoint@0          t            x   =           &      endpoint@1          t           x   >           +         port@2          t                                endpoint@0          t            x   ?           '      endpoint@1          t           x   @           ,         port@3          t                                endpoint@0          t            x   A           (      endpoint@1          t           x   B           -         port@4          t                                endpoint@0          t            x   C           )      endpoint@1          t           x   D           .            mipi@21e0000            t    @       	  Zdisabled       ports                                port@0          t       endpoint            x   E           L         port@1          t      endpoint            x   F           P               vdoa@21e4000             !fsl,imx6q-vdoa          t@   @                           a            serial@21e8000           !fsl,imx6q-uart fsl,imx21-uart           t   @                           a                    hipg per                                            rx tx           Zokay            default            G      serial@21ec000           !fsl,imx6q-uart fsl,imx21-uart           t   @                           a                    hipg per                                            rx tx         	  Zdisabled          serial@21f0000           !fsl,imx6q-uart fsl,imx21-uart           t    @                           a                    hipg per                                             rx tx         	  Zdisabled          serial@21f4000           !fsl,imx6q-uart fsl,imx21-uart           t@   @                           a                    hipg per                !             "               rx tx         	  Zdisabled          i2c@21f8000                                    !fsl,imx6q-i2c fsl,imx21-i2c         t   @                #           a      t      	  Zdisabled             ipu@2400000                                    !fsl,imx6q-ipu           t@   @                                      a                          hbus di0 di1                  port@0          t               W   endpoint            x   H           *         port@1          t              X   endpoint            x   I           /         port@2                                    t              Y   endpoint@0          t            x   J           l      endpoint@1          t           x   K           
      endpoint@2          t           x   L           E      endpoint@3          t           x   M                 endpoint@4          t           x   N                    port@3                                    t              Z   endpoint@0          t          endpoint@1          t           x   O                 endpoint@2          t           x   P           F      endpoint@3          t           x   Q                 endpoint@4          t           x   R                       sram@900000       
   !mmio-sram           t                                                         a                          cpus                                 cpu@0            !arm,cortex-a9           cpu         t               S         2    
 0         2    
           l        7         (  a      h                              )  harm pll2_pfd2_396m step pll1_sw pll1_sys            )   T        4   $        >   U        u   V        speed_grade       cpu@1            !arm,cortex-a9           cpu         t              S         2    
 0         2    
           l        7         (  a      h                              )  harm pll2_pfd2_396m step pll1_sw pll1_sys            )   T        4   $        >   U         capture-subsystem            !fsl,imx-capture-subsystem           I   W   X      display-subsystem            !fsl,imx-display-subsystem           I   Y   Z      iio-hwmon         
   !iio-hwmon           O   [       [         leds          
   !gpio-leds      led-0           [D1             \               astatus          jon        
  xheartbeat         led-1           [D2             \                joff       led-2           [D3             \               jon           mdio             !microchip,mdio-smi0         default            ]                                     \          \          switch@0             !microchip,ksz8873           default            ^                                    \              t       ports                                ports@0         t          	  internal            [lan1          ports@1         t         	  internal            [lan2          ports@2         t           [cpu            _        rmii       fixed-link             d                           phy-clock            !fixed-clock         9            F        enet_ref_pad                     regulator-3v3            !regulator-fixed            2        -3v3         < 2Z        T 2Z                 regulator-5v0            !regulator-fixed         -5v0         < LK@        T LK@           2      regulator-24v0           !regulator-fixed         -24v0            <n6         Tn6            j      regulator-can1-stby          !regulator-fixed         default            `      	  -can1-3v3            < 2Z        T 2Z                                  regulator-can2-stby          !regulator-fixed         default            a      	  -can2-3v3            < 2Z        T 2Z           b                       regulator-tft-vcom           !pwm-regulator              c      N           	  -tft_vcom            < 6        T 6         l         6         regulator-vcc-mmc            !regulator-fixed         default            d                   -mmc_vcc_supply          < 2Z        T 2Z         l                    9                        	   d           :      regulator-vcc-mmc-io             !regulator-gpio          default            e           2        -mmc_io_supply           	voltage         < w@        T 2Z           9                        	( w@    2Z            	   d           ;      touchscreen          !resistive-adc-touch          O   f      f      f      f         
  	/y z1 z2 x           	@           	Y         	p        	  ,        	         backlight            !pwm-backlight           default            g        	   h                 i      N             	               	           	              j           n      display          !fsl,imx-parallel-display            default            k                             port@0          t       endpoint            x   l           J         port@1          t      endpoint            x   m           o            panel         "   !logictechno,lttd800480070-l6wh-rt           
	   n              port       endpoint            x   o           m               	#address-cells #size-cells model compatible stdout-path ethernet0 can0 can1 gpio0 gpio1 gpio2 gpio3 gpio4 gpio5 gpio6 i2c0 i2c1 i2c2 ipu0 mmc0 mmc1 mmc2 mmc3 serial0 serial1 serial2 serial3 serial4 spi0 spi1 spi2 spi3 usb0 usb1 usb2 usb3 usbphy0 usbphy1 i2c3 ethernet1 ethernet2 mdio-gpio0 nand rtc0 rtc1 switch0 #clock-cells clock-frequency gpr status clocks clock-names reg remote-endpoint phandle interrupt-parent interrupts #phy-cells ranges #dma-cells dma-channels reg-names interrupt-names dmas dma-names pinctrl-names pinctrl-0 nand-on-flash-bbt power-domains #cooling-cells #interrupt-cells interrupt-controller cache-unified cache-level arm,tag-latency arm,data-latency arm,shared-override device_type bus-range num-lanes interrupt-map-mask interrupt-map cs-gpios spi-max-frequency vref-supply #io-channel-cells interrupts-extended settling-time-us oversampling-ratio #sound-dai-cells fsl,fifo-depth fsl,asrc-rate fsl,asrc-width resets iram #pwm-cells fsl,stop-mode xceiver-supply gpio-controller #gpio-cells gpio-ranges assigned-clocks assigned-clock-parents regulator-name regulator-min-microvolt regulator-max-microvolt regulator-always-on anatop-reg-offset anatop-vol-bit-shift anatop-vol-bit-width anatop-min-bit-val anatop-min-voltage anatop-max-voltage anatop-enable-bit anatop-delay-reg-offset anatop-delay-bit-shift anatop-delay-bit-width regulator-enable-ramp-delay fsl,tempmon nvmem-cells nvmem-cell-names #thermal-sensor-cells fsl,anatop regmap value linux,keycode wakeup-source #reset-cells #power-domain-cells power-supply #mux-control-cells mux-reg-masks mux-controls fsl,pins fsl,sdma-ram-script-name fsl,usbphy fsl,usbmisc ahb-burst-config tx-burst-size-dword rx-burst-size-dword vbus-supply disable-over-current dr_mode phy_type #index-cells phy-mode phy-supply speed full-duplex bus-width wp-gpios cd-gpios cap-power-off-card full-pwr-cycle cap-sd-highspeed sd-uhs-sdr12 sd-uhs-sdr25 sd-uhs-sdr50 sd-uhs-ddr50 mmc-ddr-1_8v vmmc-supply vqmmc-supply quartz-load-femtofarads fsl,weim-cs-gpr next-level-cache operating-points fsl,soc-operating-points clock-latency arm-supply pu-supply soc-supply ports io-channels label function default-state linux,default-trigger interrupt reset-gpios ethernet clock-output-names vin-supply gpio pwms voltage-table regulator-boot-on enable-active-high startup-delay-us regulator-type states io-channel-names touchscreen-min-pressure touchscreen-inverted-y touchscreen-swapped-x-y touchscreen-x-plate-ohms touchscreen-y-plate-ohms enable-gpios brightness-levels num-interpolated-steps default-brightness-level backlight 