bcm27xx: update 6.1 patches from RPi foundation

[openwrt/openwrt.git] / target / linux / bcm27xx / patches-6.1 / 950-1267-DT-overlays-adds-support-for-Hifiberry-AMP4-Pro.patch

diff --git a/target/linux/bcm27xx/patches-6.1/950-1267-DT-overlays-adds-support-for-Hifiberry-AMP4-Pro.patch b/target/linux/bcm27xx/patches-6.1/950-1267-DT-overlays-adds-support-for-Hifiberry-AMP4-Pro.patch
new file mode 100644 (file)
index 0000000..49429bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-6.1/950-1267-DT-overlays-adds-support-for-Hifiberry-AMP4-Pro.patch
@@ -0,0 +1,130 @@
+From 98ac9b84709dc01ee936b6fe79eaac5e3a4aa6e7 Mon Sep 17 00:00:00 2001
+From: Joerg Schambacher <joerg@hifiberry.com>
+Date: Fri, 19 Jan 2024 10:44:22 +0100
+Subject: [PATCH 1267/1295] DT-overlays: adds support for Hifiberry AMP4 Pro
+
+The AMP4 Pro uses a TI TAS5756 amplifier in master mode
+and requires the DAC Plus card driver and the
+pcm512x component driver with TAS support.
+
+Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 28 +++++++++
+ .../overlays/hifiberry-amp4pro-overlay.dts    | 63 +++++++++++++++++++
+ 3 files changed, 92 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp4pro-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -86,6 +86,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+       hifiberry-amp.dtbo \
+       hifiberry-amp100.dtbo \
+       hifiberry-amp3.dtbo \
++      hifiberry-amp4pro.dtbo \
+       hifiberry-dac.dtbo \
+       hifiberry-dacplus.dtbo \
+       hifiberry-dacplusadc.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1738,6 +1738,34 @@ Load:   dtoverlay=hifiberry-amp3
+ Params: <None>
+ 
+ 
++Name:   hifiberry-amp4pro
++Info:   Configures the HifiBerry AMP4 Pro audio card
++Load:   dtoverlay=hifiberry-amp4pro,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the TAS5756
++                                Digital volume control. Enable with
++                                "dtoverlay=hifiberry-amp4pro,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        slave                   Force the amp into slave mode, using Pi as
++                                master for bit clock and frame clock.
++        leds_off                If set to 'true' the onboard indicator LEDs
++                                are switched off at all times.
++        auto_mute               If set to 'true' the amplifier is automatically
++                                muted when it is not playing.
++        mute_ext_ctl            The amplifier's HW mute control is enabled
++                                in ALSA mixer and set to <val>.
++                                Will be overwritten by ALSA user settings.
++
++
+ Name:   hifiberry-dac
+ Info:   Configures the HifiBerry DAC audio cards
+ Load:   dtoverlay=hifiberry-dac
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-amp4pro-overlay.dts
+@@ -0,0 +1,63 @@
++// Definitions for HiFiBerry AMP4PRO
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++      compatible = "brcm,bcm2835";
++
++      fragment@0 {
++              target-path = "/";
++              __overlay__ {
++                      dacpro_osc: dacpro_osc {
++                              compatible = "hifiberry,dacpro-clk";
++                              #clock-cells = <0>;
++                      };
++              };
++      };
++
++      frag1: fragment@1 {
++              target = <&i2s_clk_consumer>;
++              __overlay__ {
++                      status = "okay";
++              };
++      };
++
++      fragment@2 {
++              target = <&i2c1>;
++              __overlay__ {
++                      #address-cells = <1>;
++                      #size-cells = <0>;
++                      status = "okay";
++
++                      tas5756@4d {
++                              #sound-dai-cells = <0>;
++                              compatible = "ti,tas5756";
++                              reg = <0x4d>;
++                              clocks = <&dacpro_osc>;
++                              status = "okay";
++                      };
++              };
++      };
++
++      fragment@3 {
++              target = <&sound>;
++              hifiberry_dacplus: __overlay__ {
++                      compatible = "hifiberry,hifiberry-dacplus";
++                      i2s-controller = <&i2s_clk_consumer>;
++                      status = "okay";
++                      mute-gpio = <&gpio 4 GPIO_ACTIVE_LOW>;
++              };
++      };
++
++      __overrides__ {
++              24db_digital_gain =
++                      <&hifiberry_dacplus>,"hifiberry-amp4,24db_digital_gain?";
++              leds_off = <&hifiberry_dacplus>,"hifiberry-amp4,leds_off?";
++              mute_ext_ctl = <&hifiberry_dacplus>,"hifiberry-amp4,mute_ext_ctl:0";
++              auto_mute = <&hifiberry_dacplus>,"hifiberry-amp4,auto_mute?";
++              slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?",
++                      <&frag1>,"target:0=",<&i2s_clk_producer>,
++                      <&hifiberry_dacplus>,"i2s-controller:0=",<&i2s_clk_producer>;
++      };
++};