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

   1 From 2cdd83392ba025cc88072c0153d443fc59919960 Mon Sep 17 00:00:00 2001
   2 From: j-schambacher <joerg@hifiberry.com>
   3 Date: Mon, 10 Feb 2025 14:58:34 +0100
   4 Subject: [PATCH] dtoverlays: adds support for Hifiberry ADC8x to the DAC8x
   5
   6 Allows the usage of ADC8x stacked on top of the DAC8x.
   7 Activates all I2S pins and uses now the dummy-dai instead
   8 of the formerly used pcm5102 to allow the use of a
   9 capture device, too. The simple card driver will
  10 probe for the ADC8x and may activate the 8 channel
  11 capture. Uses GPIO5 for detection.
  12
  13 Signed-off-by: j-schambacher <joerg@hifiberry.com>
  14 ---
  15  arch/arm/boot/dts/overlays/README                  |  3 +++
  16  .../boot/dts/overlays/hifiberry-dac8x-overlay.dts  | 14 ++++++++++----
  17  2 files changed, 13 insertions(+), 4 deletions(-)
  18
  19 --- a/arch/arm/boot/dts/overlays/README
  20 +++ b/arch/arm/boot/dts/overlays/README
  21 @@ -1879,6 +1879,9 @@ Params: <None>
  22
  23  Name:   hifiberry-dac8x
  24  Info:   Configures the HifiBerry DAC8X audio cards (only on Pi5)
  25 +        This driver also detects a stacked ADC8x and activates the
  26 +        capture capabilities.
  27 +        Note: for standalone use of the ADC8x activate the ADC8x module.
  28  Load:   dtoverlay=hifiberry-dac8x
  29  Params: <None>
  30
  31 --- a/arch/arm/boot/dts/overlays/hifiberry-dac8x-overlay.dts
  32 +++ b/arch/arm/boot/dts/overlays/hifiberry-dac8x-overlay.dts
  33 @@ -1,7 +1,10 @@
  34 +// SPDX-License-Identifier: GPL-2.0
  35  // Definitions for HiFiBerry DAC8x
  36  /dts-v1/;
  37  /plugin/;
  38
  39 +#include <dt-bindings/gpio/gpio.h>
  40 +
  41  / {
  42         compatible = "brcm,bcm2712";
  43
  44 @@ -10,8 +13,10 @@
  45                 __overlay__ {
  46                         rp1_i2s0_dac8x: rp1_i2s0_dac8x {
  47                                 function = "i2s0";
  48 -                               pins = "gpio18", "gpio19", "gpio21",
  49 -                                      "gpio23", "gpio25", "gpio27";
  50 +                               pins = "gpio18", "gpio19", "gpio20",
  51 +                                      "gpio21", "gpio22", "gpio23",
  52 +                                      "gpio24", "gpio25", "gpio26",
  53 +                                      "gpio27";
  54                                 bias-disable;
  55                                 status = "okay";
  56                         };
  57 @@ -30,9 +35,9 @@
  58         fragment@2 {
  59                 target-path = "/";
  60                 __overlay__ {
  61 -                       pcm5102a-codec {
  62 +                       dummy-codec {
  63                                 #sound-dai-cells = <0>;
  64 -                               compatible = "ti,pcm5102a";
  65 +                               compatible = "snd-soc-dummy";
  66                                 status = "okay";
  67                         };
  68                 };
  69 @@ -43,6 +48,7 @@
  70                 __overlay__ {
  71                         compatible = "hifiberry,hifiberry-dac8x";
  72                         i2s-controller = <&i2s_clk_producer>;
  73 +                       hasadc-gpio = <&gpio 5 GPIO_ACTIVE_LOW>;
  74                         status = "okay";
  75                 };
  76         };