target/linux/bcm53xx/patches-5.10/332-Meraki-MR32-use-hw-i2c.patch

   1 From: Christian Lamparter <chunkeey@gmail.com>
   2 Date: Sat, 12 Sep 2020 22:11:12 +0200
   3 Subject: bcm53xx: Meraki MR32 use hw i2c
   4
   5 replace the i2c-gpio provided i2c functionality with the
   6 hardware in the SoC. This can be activated once the
   7 internal i2c works as well as the bit-banged i2c-gpio.
   8
   9 Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
  10
  11 --- a/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
  12 +++ b/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
  13 @@ -85,40 +85,6 @@
  14                         max-brightness = <255>;
  15                 };
  16         };
  17 -
  18 -       i2c {
  19 -               /*
  20 -                * The platform provided I2C does not budge.
  21 -                * This is a replacement until I can figure
  22 -                * out what are the missing bits...
  23 -                */
  24 -
  25 -               compatible = "i2c-gpio";
  26 -               sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
  27 -               scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
  28 -               i2c-gpio,delay-us = <10>; /* close to 100 kHz */
  29 -               #address-cells = <1>;
  30 -               #size-cells = <0>;
  31 -
  32 -               current_sense: ina219@45 {
  33 -                       compatible = "ti,ina219";
  34 -                       reg = <0x45>;
  35 -                       shunt-resistor = <60000>; /* = 60 mOhms */
  36 -               };
  37 -
  38 -               eeprom: eeprom@50 {
  39 -                       compatible = "atmel,24c64";
  40 -                       reg = <0x50>;
  41 -                       pagesize = <32>;
  42 -                       read-only;
  43 -                       #address-cells = <1>;
  44 -                       #size-cells = <1>;
  45 -
  46 -                       mac_address: mac-address@66 {
  47 -                               reg = <0x66 0x6>;
  48 -                       };
  49 -               };
  50 -       };
  51  };
  52
  53  &uart0 {
  54 @@ -229,3 +195,31 @@
  55                 };
  56         };
  57  };
  58 +
  59 +&i2c0 {
  60 +       status = "okay";
  61 +
  62 +       pinctrl-names = "default";
  63 +       pinctrl-0 = <&pinmux_i2c>;
  64 +
  65 +       clock-frequency = <100000>;
  66 +
  67 +       current_sense: ina219@45 {
  68 +               compatible = "ti,ina219";
  69 +               reg = <0x45>;
  70 +               shunt-resistor = <60000>; /* = 60 mOhms */
  71 +       };
  72 +
  73 +       eeprom: eeprom@50 {
  74 +               compatible = "atmel,24c64";
  75 +               reg = <0x50>;
  76 +               pagesize = <32>;
  77 +               read-only;
  78 +               #address-cells = <1>;
  79 +               #size-cells = <1>;
  80 +
  81 +               mac_address: mac-address@66 {
  82 +                       reg = <0x66 0x6>;
  83 +               };
  84 +       };
  85 +};