target/linux/bcm27xx/patches-5.10/950-0499-overlays-Improve-the-i2c-rtc-i2c_csi_dsi-option.patch

   1 From 7792f64f6d4fbd67ed99e63ad7e828430adb6bac Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Thu, 11 Mar 2021 16:11:46 +0000
   4 Subject: [PATCH] overlays: Improve the i2c-rtc,i2c_csi_dsi option
   5
   6 The i2c_csi_dsi parameter of the i2c-rtc overlay (added for the CM4IO
   7 board) causes the RTC devices to be probed on the I2C0 bus appearing
   8 on GPIOs 44 and 45. However, it didn't enable the other nodes necessary
   9 for it to work - "dtparam=i2c_vc=on" was also required.
  10
  11 Fix that.
  12
  13 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  14 ---
  15  arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 17 ++++++++++++++++-
  16  1 file changed, 16 insertions(+), 1 deletion(-)
  17
  18 --- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
  19 +++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
  20 @@ -252,6 +252,20 @@
  21                 };
  22         };
  23
  24 +       fragment@101 {
  25 +               target = <&i2c0if>;
  26 +               __dormant__ {
  27 +                       status = "okay";
  28 +               };
  29 +       };
  30 +
  31 +       fragment@102 {
  32 +               target = <&i2c0mux>;
  33 +               __dormant__ {
  34 +                       status = "okay";
  35 +               };
  36 +       };
  37 +
  38         __overrides__ {
  39                 abx80x = <0>,"+0";
  40                 ds1307 = <0>,"+1";
  41 @@ -273,7 +287,8 @@
  42                 pcf85063a = <0>,"+16";
  43
  44                 i2c0 = <&frag100>, "target:0=",<&i2c0>;
  45 -               i2c_csi_dsi = <&frag100>, "target:0=",<&i2c_csi_dsi>;
  46 +               i2c_csi_dsi = <&frag100>, "target:0=",<&i2c_csi_dsi>,
  47 +                             <0>,"+101+102";
  48
  49                 addr = <&abx80x>, "reg:0",
  50                        <&ds1307>, "reg:0",