git.librecmc.org Git - oweals/openwrt.git/blob

   1 From 83b839b8b3a599336c2d48ab22ed919a77666476 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Mon, 26 Nov 2018 17:02:15 +0000
   4 Subject: [PATCH] dtoverlays: Add i2c on 0&1 option to TC358743,
   5  ADV7282 and OV5647
   6
   7 Adds the option of configuring i2c0 to be on GPIOs 0&1 as
   8 this is of use on the Compute Module.
   9
  10 Also fixes the ov5647 overlay where the override enabled the wrong
  11 fragments.
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  14 ---
  15  arch/arm/boot/dts/overlays/README               | 14 ++++++++++++--
  16  arch/arm/boot/dts/overlays/adv7282m-overlay.dts | 10 +++++++++-
  17  arch/arm/boot/dts/overlays/ov5647-overlay.dts   | 10 +++++++++-
  18  arch/arm/boot/dts/overlays/tc358743-overlay.dts | 10 +++++++++-
  19  4 files changed, 39 insertions(+), 5 deletions(-)
  20
  21 --- a/arch/arm/boot/dts/overlays/README
  22 +++ b/arch/arm/boot/dts/overlays/README
  23 @@ -277,7 +277,9 @@ Info:   Analog Devices ADV7282M analogue
  24          Uses Unicam1, which is the standard camera connector on most Pi
  25          variants.
  26  Load:   dtoverlay=adv7282m,<param>=<val>
  27 -Params: i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  28 +Params: i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
  29 +                                Useful on Compute Modules.
  30 +        i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  31                                  This is required for Pi B+, 2, 0, and 0W.
  32          addr                    Overrides the I2C address (default 0x21)
  33
  34 @@ -286,7 +288,9 @@ Name:   adv728x-m
  35  Info:   Analog Devices ADV728[0|1|2]-M analogue video to CSI2 bridges.
  36          This is a wrapper for adv7282m, and defaults to ADV7282M.
  37  Load:   dtoverlay=adv728x-m,<param>=<val>
  38 -Params: i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  39 +Params: i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
  40 +                                Useful on Compute Modules.
  41 +        i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  42                                  This is required for Pi B+, 2, 0, and 0W.
  43          addr                    Overrides the I2C address (default 0x21)
  44          adv7280m                Select ADV7280-M.
  45 @@ -1324,6 +1328,9 @@ Params: cam0-pwdn               GPIO use
  46                                  configuration of the particular Pi variant in
  47                                  use.
  48
  49 +        i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
  50 +                                Useful on Compute Modules.
  51 +
  52          i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  53                                  This is required for Pi B+, 2, 0, and 0W.
  54
  55 @@ -1949,6 +1956,9 @@ Params: 4lane                   Use 4 la
  56                                  (574Mbit/s) and 486000000 (972Mbit/s - default)
  57                                  are supported by the driver.
  58
  59 +        i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
  60 +                                Useful on Compute Modules.
  61 +
  62          i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  63                                  This is required for Pi B+, 2, 0, and 0W.
  64
  65 --- a/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
  66 +++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
  67 @@ -60,6 +60,13 @@
  68                 };
  69         };
  70         fragment@4 {
  71 +               target = <&i2c0_pins>;
  72 +               __dormant__ {
  73 +                       brcm,pins = <0 1>;
  74 +                       brcm,function = <4>; /* alt0 */
  75 +               };
  76 +       };
  77 +       fragment@5 {
  78                 target = <&i2c_vc>;
  79                 __overlay__ {
  80                         status = "okay";
  81 @@ -67,7 +74,8 @@
  82         };
  83
  84         __overrides__ {
  85 -               i2c_pins_28_29 =        <0>,"+2-3";
  86 +               i2c_pins_0_1 =          <0>,"-2-3+4";
  87 +               i2c_pins_28_29 =        <0>,"+2-3-4";
  88                 addr =                  <&adv728x>,"reg:0";
  89         };
  90  };
  91 --- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
  92 +++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
  93 @@ -69,6 +69,13 @@
  94                 };
  95         };
  96         fragment@4 {
  97 +               target = <&i2c0_pins>;
  98 +               __dormant__ {
  99 +                       brcm,pins = <0 1>;
 100 +                       brcm,function = <4>; /* alt0 */
 101 +               };
 102 +       };
 103 +       fragment@5 {
 104                 target = <&i2c_vc>;
 105                 __overlay__ {
 106                         status = "okay";
 107 @@ -76,7 +83,8 @@
 108         };
 109
 110         __overrides__ {
 111 -               i2c_pins_28_29 = <0>,"+4-5";
 112 +               i2c_pins_0_1 = <0>,"-2-3+4";
 113 +               i2c_pins_28_29 = <0>,"+2-3-4";
 114                 cam0-pwdn = <&ov5647>,"pwdn-gpios:4";
 115                 cam0-led = <&ov5647>,"pwdn-gpios:16";
 116         };
 117 --- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
 118 +++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
 119 @@ -94,6 +94,13 @@
 120                 };
 121         };
 122         fragment@6 {
 123 +               target = <&i2c0_pins>;
 124 +               __dormant__ {
 125 +                       brcm,pins = <0 1>;
 126 +                       brcm,function = <4>; /* alt0 */
 127 +               };
 128 +       };
 129 +       fragment@7 {
 130                 target = <&i2c_vc>;
 131                 __overlay__ {
 132                         status = "okay";
 133 @@ -101,7 +108,8 @@
 134         };
 135
 136         __overrides__ {
 137 -               i2c_pins_28_29 = <0>,"+4-5";
 138 +               i2c_pins_0_1 = <0>,"-4-5+6";
 139 +               i2c_pins_28_29 = <0>,"+4-5-6";
 140                 4lane = <0>, "-2+3";
 141                 link-frequency = <&tc358743>,"link-frequencies#0";
 142         };