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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0323-Allow-up-to-24dB-digital-gain-to-be-applied-when-usi.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0323-Allow-up-to-24dB-digital-gain-to-be-applied-when-usi.patch60
1 files changed, 0 insertions, 60 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0323-Allow-up-to-24dB-digital-gain-to-be-applied-when-usi.patch b/target/linux/brcm2708/patches-4.4/0323-Allow-up-to-24dB-digital-gain-to-be-applied-when-usi.patch
deleted file mode 100644
index 76b98a503d..0000000000
--- a/target/linux/brcm2708/patches-4.4/0323-Allow-up-to-24dB-digital-gain-to-be-applied-when-usi.patch
+++ /dev/null
@@ -1,60 +0,0 @@
-From f8abdaaf67f76c85eff5d5b2d38603b0dbaaf6be Mon Sep 17 00:00:00 2001
-From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
-Date: Fri, 6 May 2016 09:42:55 +0100
-Subject: [PATCH] Allow up to 24dB digital gain to be applied when using
- IQAudIO DAC
-
-24db_digital_gain DT param can be used to specify that PCM512x
-codec "Digital" volume control should not be limited to 0dB gain,
-and if specified will allow the full 24dB gain.
-
-Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
----
- arch/arm/boot/dts/overlays/README | 17 +++++++++++++++--
- arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts | 6 +++++-
- 2 files changed, 20 insertions(+), 3 deletions(-)
-
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -490,8 +490,21 @@ Params: <None>
-
- Name: iqaudio-dac
- Info: Configures the IQaudio DAC audio card
--Load: dtoverlay=iqaudio-dac
--Params: <None>
-+Load: dtoverlay=iqaudio-dac,<param>
-+Params: 24db_digital_gain Allow gain to be applied via the PCM512x codec
-+ Digital volume control. Enable with
-+ "dtoverlay=iqaudio-dac,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!)
-
-
- Name: iqaudio-dacplus
---- a/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
-+++ b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
-@@ -30,10 +30,14 @@
-
- fragment@2 {
- target = <&sound>;
-- __overlay__ {
-+ frag2: __overlay__ {
- compatible = "iqaudio,iqaudio-dac";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-+
-+ __overrides__ {
-+ 24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
-+ };
- };