target/linux/bcm27xx/patches-5.10/950-0536-overlays-ghost-amp-Add-DAC-mute-control.patch

   1 From e56470876bda3751a1926aa5876495e3678e363f Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Fri, 16 Apr 2021 09:31:17 +0100
   4 Subject: [PATCH] overlays: ghost-amp: Add DAC mute control
   5
   6 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
   7 ---
   8  .../boot/dts/overlays/ghost-amp-overlay.dts   | 28 +++++++++++--------
   9  1 file changed, 17 insertions(+), 11 deletions(-)
  10
  11 --- a/arch/arm/boot/dts/overlays/ghost-amp-overlay.dts
  12 +++ b/arch/arm/boot/dts/overlays/ghost-amp-overlay.dts
  13 @@ -4,10 +4,11 @@
  14
  15  #include <dt-bindings/gpio/gpio-fsm.h>
  16
  17 -#define ENABLE GF_SW(0)
  18 -#define FAULT  GF_IP(0) // GPIO5
  19 -#define RELAY1 GF_OP(0) // GPIO22
  20 -#define RELAY2 GF_OP(1) // GPIO23
  21 +#define ENABLE   GF_SW(0)
  22 +#define FAULT    GF_IP(0) // GPIO5
  23 +#define RELAY1   GF_OP(0) // GPIO22
  24 +#define RELAY2   GF_OP(1) // GPIO23
  25 +#define RELAYSSR GF_OP(2) // GPIO24
  26
  27  / {
  28         compatible = "brcm,bcm2835";
  29 @@ -64,14 +65,16 @@
  30                                 gpio-line-names = "enable";
  31                                 input-gpios  = <&gpio 5 1>;  // FAULT (active low)
  32                                 output-gpios = <&gpio 22 0>, // RELAY1
  33 -                                              <&gpio 23 0>; // RELAY2
  34 +                                              <&gpio 23 0>, // RELAY2
  35 +                                              <&gpio 24 0>; // RELAYSSR
  36                                 shutdown-timeout-ms = <1000>;
  37
  38                                 amp_off {
  39                                         start_state;
  40                                         shutdown_state;
  41
  42 -                                       set = <RELAY2 0>,
  43 +                                       set = <RELAYSSR 0>,
  44 +                                             <RELAY2 0>,
  45                                               <RELAY1 0>;
  46                                         amp_on_1 = <ENABLE 1>;
  47                                         fault = <FAULT 1>;
  48 @@ -85,12 +88,14 @@
  49                                 };
  50
  51                                 amp_on {
  52 -                                       set = <RELAY2 1>;
  53 +                                       set = <RELAY2 1>,
  54 +                                             <RELAYSSR 1>;
  55                                         amp_on_wait = <ENABLE 0>;
  56                                         fault = <FAULT 1>;
  57                                 };
  58
  59                                 amp_on_wait {
  60 +                                       set = <RELAYSSR 0>;
  61                                         amp_off_1 = <GF_DELAY (30*60*1000)>,
  62                                                     <GF_SHUTDOWN 0>;
  63                                         amp_on = <ENABLE 1>;
  64 @@ -107,7 +112,8 @@
  65                                 // Keep this a distinct state to prevent
  66                                 // changes and for the diagnostic output
  67                                 fault {
  68 -                                       set = <RELAY2 0>,
  69 +                                       set = <RELAYSSR 0>,
  70 +                                             <RELAY2 0>,
  71                                               <RELAY1 0>;
  72                                         amp_off = <FAULT 0>;
  73                                         shutdown_state;
  74 @@ -120,9 +126,9 @@
  75                 target = <&gpio>;
  76                 __overlay__ {
  77                         ghost_amp_pins: ghost_amp_pins {
  78 -                               brcm,pins = <5 22 23>;
  79 -                               brcm,function = <0 1 1>; /* in out out */
  80 -                               brcm,pull = <2 0 0>; /* up none none */
  81 +                               brcm,pins = <5 22 23 24>;
  82 +                               brcm,function = <0 1 1 1>; /* in out out out */
  83 +                               brcm,pull = <2 0 0 0>; /* up none none none */
  84                         };
  85                 };
  86         };