target/linux/brcm2708/patches-4.4/0343-BCM270X_DT-Fix-the-tinylcd35-overlay-RTC-support.patch

   1 From 883257ef0684a00823501a440e05f3eb24c1de73 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Thu, 12 May 2016 09:04:20 +0100
   4 Subject: [PATCH] BCM270X_DT: Fix the tinylcd35 overlay RTC support
   5
   6 Now that overlay parameters are applied before the merge (a requirement
   7 for kernel runtime overlays) it is illegal for parameters/overrides to
   8 target nodes in the base DTB. Solve the problem of only enabling I2C
   9 when an RTC option is used by making the RTC fragments conditional,
  10 and including the required status="okay" within the fragments.
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  13 ---
  14  arch/arm/boot/dts/overlays/tinylcd35-overlay.dts | 18 ++++++++++--------
  15  1 file changed, 10 insertions(+), 8 deletions(-)
  16
  17 --- a/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
  18 +++ b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
  19 @@ -132,28 +132,32 @@
  20
  21         fragment@5 {
  22                 target = <&i2c1>;
  23 -               __overlay__ {
  24 +               __dormant__ {
  25                         #address-cells = <1>;
  26                         #size-cells = <0>;
  27
  28 +                       status = "okay";
  29 +
  30                         pcf8563: pcf8563@51 {
  31                                 compatible = "nxp,pcf8563";
  32                                 reg = <0x51>;
  33 -                               status = "disabled";
  34 +                               status = "okay";
  35                         };
  36                 };
  37         };
  38
  39         fragment@6 {
  40                 target = <&i2c1>;
  41 -               __overlay__ {
  42 +               __dormant__ {
  43                         #address-cells = <1>;
  44                         #size-cells = <0>;
  45
  46 +                       status = "okay";
  47 +
  48                         ds1307: ds1307@68 {
  49                                 compatible = "maxim,ds1307";
  50                                 reg = <0x68>;
  51 -                               status = "disabled";
  52 +                               status = "okay";
  53                         };
  54                 };
  55         };
  56 @@ -213,10 +217,8 @@
  57                              <&tinylcd35_ts>,"interrupts:0",
  58                              <&tinylcd35_ts>,"pendown-gpio:4";
  59                 xohms =      <&tinylcd35_ts>,"ti,x-plate-ohms;0";
  60 -               rtc-pcf =    <&i2c1>,"status",
  61 -                            <&pcf8563>,"status";
  62 -               rtc-ds =     <&i2c1>,"status",
  63 -                            <&ds1307>,"status";
  64 +               rtc-pcf =    <0>,"=5";
  65 +               rtc-ds =     <0>,"=6";
  66                 keypad =     <&keypad>,"status";
  67         };
  68  };