git.openwrt.org Git - openwrt/staging/ldir.git/blob

   1 From ef6a692bf0e076c905a912fbb8e65481c354a7ca Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Wed, 23 Nov 2022 11:51:38 +0000
   4 Subject: [PATCH] overlays: i2c-sensor: Make smbus-timeout-disable
   5  optional
   6
   7 Although disabling the SMBUS timeout may be useful, not all chips
   8 support it. The driver treats attempting to disable the timeout on a
   9 non-supporting chip as an error, so make it an option enabled using the
  10 no_timeout parameter.
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  13 ---
  14  arch/arm/boot/dts/overlays/README                 | 5 +++++
  15  arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi | 2 +-
  16  2 files changed, 6 insertions(+), 1 deletion(-)
  17
  18 --- a/arch/arm/boot/dts/overlays/README
  19 +++ b/arch/arm/boot/dts/overlays/README
  20 @@ -1999,6 +1999,11 @@ Params: addr                    Set the
  21                                  use the "jc42" option.
  22                                  Valid addresses are 0x18-0x1f (default 0x18)
  23
  24 +        no_timeout              Disable the SMBUS timeout. N.B. Only supported
  25 +                                by some jc42 devices - using with an
  26 +                                incompatible device can stop it from being
  27 +                                activated.
  28 +
  29          sht3x                   Select the Sensiron SHT3x temperature and
  30                                  humidity sensor. Valid addresses 0x44-0x45,
  31                                  default 0x44
  32 --- a/arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
  33 +++ b/arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
  34 @@ -347,7 +347,6 @@
  35                         jc42: jc42@18 {
  36                                 compatible = "jedec,jc-42.4-temp";
  37                                 reg = <0x18>;
  38 -                               smbus-timeout-disable;
  39                         };
  40                 };
  41         };
  42 @@ -383,5 +382,6 @@
  43                         <&ds1621>,"reg:0", <&bme680>,"reg:0", <&ccs811>,"reg:0",
  44                         <&bh1750>,"reg:0", <&mcp980x>,"reg:0", <&jc42>,"reg:0";
  45                 int_pin = <&max30102>, "interrupts:0";
  46 +               no_timeout = <&jc42>, "smbus-timeout-disable?";
  47         };
  48  };