From 9e11a0660a76997d52ddd5ffea4dc42a6f857263 Mon Sep 17 00:00:00 2001
From: Andrea Bondavalli <andrea.bondavalli74@gmail.com>
Date: Tue, 7 Dec 2021 10:06:24 +0100
Subject: [PATCH 1/3] Added buffer size parameter to run_latency_test.sh script

---
 run_latency_test.sh | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/run_latency_test.sh b/run_latency_test.sh
index 89628a6..e38942e 100755
--- a/run_latency_test.sh
+++ b/run_latency_test.sh
@@ -18,11 +18,12 @@ function usage {
   echo '  sample_rate can be one of 44100, 48000, 96000' >&2
   echo '  channels can be one of 1, 2, 4' >&2
   echo '  duration in seconds' >&2
+  echo '  buffer size in frames' >&2
   exit 1
 }
 
 
-if [ "$#" -ne 4 ]; then
+if [ "$#" -lt 4 ]; then
   usage 
 fi
 
@@ -60,6 +61,13 @@ SAMPLE_FORMAT=$1
 SAMPLE_RATE=$2
 CHANNELS=$3
 DURATION=$4
+if [ "$#" -gt 4 ]; then
+  FRAMES=$5
+else
+  FRAMES=128
+fi
+
+echo 'Using buffer size of '$FRAMES' frames'
 
 if [ $SAMPLE_FORMAT == "S16_LE" ]; then
   CODEC="L16"
@@ -131,7 +139,7 @@ sleep 30
 
 echo "Running 10 secs latency test"
 cd test
-sudo nice -n -10 ./latency -P hw:RAVENNA -C hw:RAVENNA -f $SAMPLE_FORMAT -r $SAMPLE_RATE -c $CHANNELS -M 128 -m 128 -s $DURATION
+sudo nice -n -10 ./latency -P hw:RAVENNA -C hw:RAVENNA -f $SAMPLE_FORMAT -r $SAMPLE_RATE -c $CHANNELS -M $FRAMES -m $FRAMES -s $DURATION
 cd ..
 
 echo "Terminating processes ..."

From aa9a68dd2e5d5823429a6ebe36ca8029c14ca081 Mon Sep 17 00:00:00 2001
From: Andrea Bondavalli <56439183+bondagit@users.noreply.github.com>
Date: Tue, 7 Dec 2021 10:27:26 +0100
Subject: [PATCH 2/3] Update README.md

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 95d4ca9..c1f4bad 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,7 @@ The [aes67-daemon branch of ravenna-alsa-lkm repository](https://github.com/bond
 
  The following patches have been applied to the original module:
 
+* patch to enable the configuration of smaller ALSA buffer sizes to reduce end-to-end latency to up to 8ms (from driver version v1.4). See [platform latency test](#latency)
 * patch to remove unsupported non-interleved access from driver capabilities. This enables compatibility with JACK audio (from driver version v1.3)
 * patch to enable the usage of a PTP master clock on the daemon host (from driver version v1.1)
 * patch to rework the driver PCM interface and to simplify and unify handling of read-write interlaved and memory mapped access modes

From e0acdf7e14278b821a7051379350dff469c31ccb Mon Sep 17 00:00:00 2001
From: Andrea Bondavalli <56439183+bondagit@users.noreply.github.com>
Date: Tue, 7 Dec 2021 10:34:46 +0100
Subject: [PATCH 3/3] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index c1f4bad..df95437 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,7 @@ The [aes67-daemon branch of ravenna-alsa-lkm repository](https://github.com/bond
 
  The following patches have been applied to the original module:
 
-* patch to enable the configuration of smaller ALSA buffer sizes to reduce end-to-end latency to up to 8ms (from driver version v1.4). See [platform latency test](#latency)
+* patch to enable the configuration of smaller ALSA buffer sizes to reduce end-to-end latency up to 8ms (from driver version v1.4). See [platform latency test](#latency).
 * patch to remove unsupported non-interleved access from driver capabilities. This enables compatibility with JACK audio (from driver version v1.3)
 * patch to enable the usage of a PTP master clock on the daemon host (from driver version v1.1)
 * patch to rework the driver PCM interface and to simplify and unify handling of read-write interlaved and memory mapped access modes