target/linux/mvebu/patches-5.10/006-v5.11-ARM-dts-turris-omnia-add-LED-controller-node.patch

   1 From 91dd42d0e30fdbb250c61d1192af569f07e6ada4 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <kabel@kernel.org>
   3 Date: Sun, 15 Nov 2020 14:59:21 +0100
   4 Subject: ARM: dts: turris-omnia: add LED controller node
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Linux now has incomplete support for the LED controller on Turris Omnia:
  10 it can set brightness and colors for each LED.
  11
  12 The controller can also put these LEDs into HW controlled mode, in which
  13 the LEDs are controlled by HW: for example the WAN LED is connected via
  14 MCU to the WAN PHY LED pin.
  15
  16 The driver does not support these HW controlled modes yet, and on probe
  17 puts the LEDs into SW controlled mode.
  18
  19 Add node describing the LED controller, but disable it for now.
  20
  21 Signed-off-by: Marek Behún <kabel@kernel.org>
  22 Cc: linux-arm-kernel@lists.infradead.org
  23 Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
  24 Cc: Jason Cooper <jason@lakedaemon.net>
  25 Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
  26 Cc: Andreas Färber <afaerber@suse.de>
  27 Cc: Rob Herring <robh+dt@kernel.org>
  28 Cc: devicetree@vger.kernel.org
  29 Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
  30 ---
  31  arch/arm/boot/dts/armada-385-turris-omnia.dts | 111 +++++++++++++++++++++++++-
  32  1 file changed, 110 insertions(+), 1 deletion(-)
  33
  34 --- a/arch/arm/boot/dts/armada-385-turris-omnia.dts
  35 +++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts
  36 @@ -12,6 +12,7 @@
  37
  38  #include <dt-bindings/gpio/gpio.h>
  39  #include <dt-bindings/input/input.h>
  40 +#include <dt-bindings/leds/common.h>
  41  #include "armada-385.dtsi"
  42
  43  / {
  44 @@ -187,7 +188,115 @@
  45                         reg = <0>;
  46
  47                         /* STM32F0 command interface at address 0x2a */
  48 -                       /* leds device (in STM32F0) at address 0x2b */
  49 +
  50 +                       led-controller@2b {
  51 +                               compatible = "cznic,turris-omnia-leds";
  52 +                               reg = <0x2b>;
  53 +                               #address-cells = <1>;
  54 +                               #size-cells = <0>;
  55 +
  56 +                               /*
  57 +                                * LEDs are controlled by MCU (STM32F0) at
  58 +                                * address 0x2b.
  59 +                                *
  60 +                                * The driver does not support HW control mode
  61 +                                * for the LEDs yet. Disable the LEDs for now.
  62 +                                *
  63 +                                * Also LED functions are not stable yet:
  64 +                                * - there are 3 LEDs connected via MCU to PCIe
  65 +                                *   ports. One of these ports supports mSATA.
  66 +                                *   There is no mSATA nor PCIe function.
  67 +                                *   For now we use LED_FUNCTION_WLAN, since
  68 +                                *   in most cases users have wifi cards in
  69 +                                *   these slots
  70 +                                * - there are 2 LEDs dedicated for user: A and
  71 +                                *   B. Again there is no such function defined.
  72 +                                *   For now we use LED_FUNCTION_INDICATOR
  73 +                                */
  74 +                               status = "disabled";
  75 +
  76 +                               multi-led@0 {
  77 +                                       reg = <0x0>;
  78 +                                       color = <LED_COLOR_ID_RGB>;
  79 +                                       function = LED_FUNCTION_INDICATOR;
  80 +                                       function-enumerator = <2>;
  81 +                               };
  82 +
  83 +                               multi-led@1 {
  84 +                                       reg = <0x1>;
  85 +                                       color = <LED_COLOR_ID_RGB>;
  86 +                                       function = LED_FUNCTION_INDICATOR;
  87 +                                       function-enumerator = <1>;
  88 +                               };
  89 +
  90 +                               multi-led@2 {
  91 +                                       reg = <0x2>;
  92 +                                       color = <LED_COLOR_ID_RGB>;
  93 +                                       function = LED_FUNCTION_WLAN;
  94 +                                       function-enumerator = <3>;
  95 +                               };
  96 +
  97 +                               multi-led@3 {
  98 +                                       reg = <0x3>;
  99 +                                       color = <LED_COLOR_ID_RGB>;
 100 +                                       function = LED_FUNCTION_WLAN;
 101 +                                       function-enumerator = <2>;
 102 +                               };
 103 +
 104 +                               multi-led@4 {
 105 +                                       reg = <0x4>;
 106 +                                       color = <LED_COLOR_ID_RGB>;
 107 +                                       function = LED_FUNCTION_WLAN;
 108 +                                       function-enumerator = <1>;
 109 +                               };
 110 +
 111 +                               multi-led@5 {
 112 +                                       reg = <0x5>;
 113 +                                       color = <LED_COLOR_ID_RGB>;
 114 +                                       function = LED_FUNCTION_WAN;
 115 +                               };
 116 +
 117 +                               multi-led@6 {
 118 +                                       reg = <0x6>;
 119 +                                       color = <LED_COLOR_ID_RGB>;
 120 +                                       function = LED_FUNCTION_LAN;
 121 +                                       function-enumerator = <4>;
 122 +                               };
 123 +
 124 +                               multi-led@7 {
 125 +                                       reg = <0x7>;
 126 +                                       color = <LED_COLOR_ID_RGB>;
 127 +                                       function = LED_FUNCTION_LAN;
 128 +                                       function-enumerator = <3>;
 129 +                               };
 130 +
 131 +                               multi-led@8 {
 132 +                                       reg = <0x8>;
 133 +                                       color = <LED_COLOR_ID_RGB>;
 134 +                                       function = LED_FUNCTION_LAN;
 135 +                                       function-enumerator = <2>;
 136 +                               };
 137 +
 138 +                               multi-led@9 {
 139 +                                       reg = <0x9>;
 140 +                                       color = <LED_COLOR_ID_RGB>;
 141 +                                       function = LED_FUNCTION_LAN;
 142 +                                       function-enumerator = <1>;
 143 +                               };
 144 +
 145 +                               multi-led@a {
 146 +                                       reg = <0xa>;
 147 +                                       color = <LED_COLOR_ID_RGB>;
 148 +                                       function = LED_FUNCTION_LAN;
 149 +                                       function-enumerator = <0>;
 150 +                               };
 151 +
 152 +                               multi-led@b {
 153 +                                       reg = <0xb>;
 154 +                                       color = <LED_COLOR_ID_RGB>;
 155 +                                       function = LED_FUNCTION_POWER;
 156 +                               };
 157 +                       };
 158
 159                         eeprom@54 {
 160                                 compatible = "atmel,24c64";