openwrt/target/linux/bcm27xx/patches-6.6/950-0974-Overlays-Add-specific-clk-producer-consumer-overlays.patch

From d322faf96e474d15989860ae98b952c324740e20 Mon Sep 17 00:00:00 2001
From: j-schambacher <joerg@hifiberry.com>
Date: Mon, 11 Mar 2024 15:32:28 +0100
Subject: [PATCH 0974/1085] Overlays:Add specific clk-producer/-consumer
 overlays for Hifiberry DAC+

As the easy switching of the I2S module bewteen clock producer/consumer
on the PI5 is not possible, two specific DT-overlays are introduced.
The DAC+PRO boards with onboard clocks use the -PRO overlay, the boards
without oscillators the -STD version.
The "hifiberry-dacplus,slave" parameter in the -STD overlay disables
the automatic clock detection inside the hifiberry-dacplus driver.

The former hifiberry-dacplus overlay is kept for compatibility but
will be deprecated.

Signed-off-by: j-schambacher <joerg@hifiberry.com>
---
 arch/arm/boot/dts/overlays/Makefile           |  2 +
 arch/arm/boot/dts/overlays/README             | 42 ++++++++++++
 .../hifiberry-dacplus-pro-overlay.dts         | 64 ++++++++++++++++++
 .../hifiberry-dacplus-std-overlay.dts         | 65 +++++++++++++++++++
 4 files changed, 173 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplus-pro-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplus-std-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -91,6 +91,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	hifiberry-dac.dtbo \
 	hifiberry-dac8x.dtbo \
 	hifiberry-dacplus.dtbo \
+	hifiberry-dacplus-pro.dtbo \
+	hifiberry-dacplus-std.dtbo \
 	hifiberry-dacplusadc.dtbo \
 	hifiberry-dacplusadcpro.dtbo \
 	hifiberry-dacplusdsp.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1819,6 +1819,48 @@ Params: 24db_digital_gain       Allow ga
                                 are switched off at all times.
 
 
+Name:   hifiberry-dacplus-pro
+Info:   Configures the HifiBerry DAC+ PRO audio card (onboard clocks)
+Load:   dtoverlay=hifiberry-dacplus-pro,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=hifiberry-dacplus,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!)
+        leds_off                If set to 'true' the onboard indicator LEDs
+                                are switched off at all times.
+
+
+Name:   hifiberry-dacplus-std
+Info:   Configures the HifiBerry DAC+ standard audio card (no onboard clocks)
+Load:   dtoverlay=hifiberry-dacplus-std,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=hifiberry-dacplus,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!)
+        leds_off                If set to 'true' the onboard indicator LEDs
+                                are switched off at all times.
+
+
 Name:   hifiberry-dacplusadc
 Info:   Configures the HifiBerry DAC+ADC audio card
 Load:   dtoverlay=hifiberry-dacplusadc,<param>=<val>
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-pro-overlay.dts
@@ -0,0 +1,64 @@
+// Definitions for HiFiBerry DAC+ PRO, with onboard clocks
+/dts-v1/;
+/plugin/;
+
+/ {
+	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";
+
+			pcm5122@4d {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4d>;
+				clocks = <&dacpro_osc>;
+				AVDD-supply = <&vdd_3v3_reg>;
+				DVDD-supply = <&vdd_3v3_reg>;
+				CPVDD-supply = <&vdd_3v3_reg>;
+				status = "okay";
+			};
+			hpamp: hpamp@60 {
+				compatible = "ti,tpa6130a2";
+				reg = <0x60>;
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@3 {
+		target = <&sound>;
+		hifiberry_dacplus: __overlay__ {
+			compatible = "hifiberry,hifiberry-dacplus";
+			i2s-controller = <&i2s_clk_consumer>;
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		24db_digital_gain =
+			<&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
+		leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
+	};
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-std-overlay.dts
@@ -0,0 +1,65 @@
+// Definitions for HiFiBerry DAC+ Standard w/o onboard clocks
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			dacpro_osc: dacpro_osc {
+				compatible = "hifiberry,dacpro-clk";
+				#clock-cells = <0>;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s_clk_producer>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4d {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4d>;
+				clocks = <&dacpro_osc>;
+				AVDD-supply = <&vdd_3v3_reg>;
+				DVDD-supply = <&vdd_3v3_reg>;
+				CPVDD-supply = <&vdd_3v3_reg>;
+				status = "okay";
+			};
+			hpamp: hpamp@60 {
+				compatible = "ti,tpa6130a2";
+				reg = <0x60>;
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@3 {
+		target = <&sound>;
+		hifiberry_dacplus: __overlay__ {
+			compatible = "hifiberry,hifiberry-dacplus";
+			i2s-controller = <&i2s_clk_producer>;
+			hifiberry-dacplus,slave;
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		24db_digital_gain =
+			<&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
+		leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
+	};
+};