target/linux/bcm27xx/patches-6.1/950-1185-overlays-ADS1115-allow-specification-of-the-i2c-bus.patch

   1 From a477a6351575aa173f9f82857f5797e384fbc704 Mon Sep 17 00:00:00 2001
   2 From: JinShil <slavo5150@yahoo.com>
   3 Date: Tue, 28 Nov 2023 17:05:44 +0900
   4 Subject: [PATCH] overlays: ADS1115: allow specification of the i2c bus
   5
   6 ---
   7  arch/arm/boot/dts/overlays/README             | 10 +++
   8  .../arm/boot/dts/overlays/ads1115-overlay.dts | 80 +++++++++++++------
   9  2 files changed, 66 insertions(+), 24 deletions(-)
  10
  11 --- a/arch/arm/boot/dts/overlays/README
  12 +++ b/arch/arm/boot/dts/overlays/README
  13 @@ -489,6 +489,16 @@ Params: addr                    I2C bus
  14          cha_gain                Set the gain of the Programmable Gain
  15                                  Amplifier for this channel. (Default 1 sets the
  16                                  full scale of the channel to 4.096 Volts)
  17 +        i2c0                    Choose the I2C0 bus on GPIOs 0&1
  18 +        i2c_csi_dsi             Choose the I2C0 bus on GPIOs 44&45
  19 +        i2c3                    Choose the I2C3 bus (configure with the i2c3
  20 +                                overlay - BCM2711 only)
  21 +        i2c4                    Choose the I2C4 bus (configure with the i2c4
  22 +                                overlay - BCM2711 only)
  23 +        i2c5                    Choose the I2C5 bus (configure with the i2c5
  24 +                                overlay - BCM2711 only)
  25 +        i2c6                    Choose the I2C6 bus (configure with the i2c6
  26 +                                overlay - BCM2711 only)
  27
  28          Channel parameters can be set for each enabled channel.
  29          A maximum of 4 channels can be enabled (letters a thru d).
  30 --- a/arch/arm/boot/dts/overlays/ads1115-overlay.dts
  31 +++ b/arch/arm/boot/dts/overlays/ads1115-overlay.dts
  32 @@ -9,23 +9,6 @@
  33         compatible = "brcm,bcm2835";
  34
  35         fragment@0 {
  36 -               target = <&i2c_arm>;
  37 -               __overlay__ {
  38 -                       #address-cells = <1>;
  39 -                       #size-cells = <0>;
  40 -                       status = "okay";
  41 -
  42 -                       ads1115: ads1115@48 {
  43 -                               compatible = "ti,ads1115";
  44 -                               status = "okay";
  45 -                               #address-cells = <1>;
  46 -                               #size-cells = <0>;
  47 -                               reg = <0x48>;
  48 -                       };
  49 -               };
  50 -       };
  51 -
  52 -       fragment@1 {
  53                 target = <&ads1115>;
  54                 __dormant__ {
  55                         #address-cells = <1>;
  56 @@ -39,7 +22,7 @@
  57                 };
  58         };
  59
  60 -       fragment@2 {
  61 +       fragment@1 {
  62                 target = <&ads1115>;
  63                 __dormant__ {
  64                         #address-cells = <1>;
  65 @@ -53,7 +36,7 @@
  66                 };
  67         };
  68
  69 -       fragment@3 {
  70 +       fragment@2 {
  71                 target = <&ads1115>;
  72                 __dormant__ {
  73                         #address-cells = <1>;
  74 @@ -67,7 +50,7 @@
  75                 };
  76         };
  77
  78 -       fragment@4 {
  79 +       fragment@3 {
  80                 target = <&ads1115>;
  81                 __dormant__ {
  82                         #address-cells = <1>;
  83 @@ -81,23 +64,72 @@
  84                 };
  85         };
  86
  87 +       fragment@4 {
  88 +               target = <&i2cbus>;
  89 +               __overlay__ {
  90 +                       #address-cells = <1>;
  91 +                       #size-cells = <0>;
  92 +                       status = "okay";
  93 +
  94 +                       ads1115: ads1115@48 {
  95 +                               compatible = "ti,ads1115";
  96 +                               status = "okay";
  97 +                               #address-cells = <1>;
  98 +                               #size-cells = <0>;
  99 +                               reg = <0x48>;
 100 +                       };
 101 +               };
 102 +       };
 103 +
 104 +       frag100: fragment@100 {
 105 +               target = <&i2c1>;
 106 +               i2cbus: __overlay__ {
 107 +                       status = "okay";
 108 +               };
 109 +       };
 110 +
 111 +       fragment@101 {
 112 +               target = <&i2c0if>;
 113 +               __dormant__ {
 114 +                       status = "okay";
 115 +               };
 116 +       };
 117 +
 118 +       fragment@102 {
 119 +               target = <&i2c0mux>;
 120 +               __dormant__ {
 121 +                       status = "okay";
 122 +               };
 123 +       };
 124 +
 125         __overrides__ {
 126                 addr =            <&ads1115>,"reg:0";
 127 -               cha_enable =      <0>,"=1";
 128 +               cha_enable =      <0>,"=0";
 129                 cha_cfg =         <&channel_a>,"reg:0";
 130                 cha_gain =        <&channel_a>,"ti,gain:0";
 131                 cha_datarate =    <&channel_a>,"ti,datarate:0";
 132 -               chb_enable =      <0>,"=2";
 133 +               chb_enable =      <0>,"=1";
 134                 chb_cfg =         <&channel_b>,"reg:0";
 135                 chb_gain =        <&channel_b>,"ti,gain:0";
 136                 chb_datarate =    <&channel_b>,"ti,datarate:0";
 137 -               chc_enable =      <0>,"=3";
 138 +               chc_enable =      <0>,"=2";
 139                 chc_cfg =         <&channel_c>,"reg:0";
 140                 chc_gain =        <&channel_c>,"ti,gain:0";
 141                 chc_datarate =    <&channel_c>,"ti,datarate:0";
 142 -               chd_enable =      <0>,"=4";
 143 +               chd_enable =      <0>,"=3";
 144                 chd_cfg =         <&channel_d>,"reg:0";
 145                 chd_gain =        <&channel_d>,"ti,gain:0";
 146                 chd_datarate =    <&channel_d>,"ti,datarate:0";
 147 +               i2c0 = <&frag100>, "target:0=",<&i2c0>;
 148 +               i2c_csi_dsi = <&frag100>, "target:0=",<&i2c_csi_dsi>,
 149 +                             <0>,"+101+102";
 150 +               i2c3 = <&frag100>, "target?=0",
 151 +                      <&frag100>, "target-path=i2c3";
 152 +               i2c4 = <&frag100>, "target?=0",
 153 +                      <&frag100>, "target-path=i2c4";
 154 +               i2c5 = <&frag100>, "target?=0",
 155 +                      <&frag100>, "target-path=i2c5";
 156 +               i2c6 = <&frag100>, "target?=0",
 157 +                      <&frag100>, "target-path=i2c6";
 158         };
 159  };