1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/801-audio-0010-Revert-ASoC-fsl_sai-derive-TX-FIFO-watermark-from-FI.patch b/target/linux/layerscape/patches-5.4/801-audio-0010-Revert-ASoC-fsl_sai-derive-TX-FIFO-watermark-from-FI.patch
new file mode 100644
index 0000000000..33e6c7d133
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/801-audio-0010-Revert-ASoC-fsl_sai-derive-TX-FIFO-watermark-from-FI.patch
@@ -0,0 +1,46 @@
+From 33c1f03b9eca0c192708c9df295d2a30073cd121 Mon Sep 17 00:00:00 2001
+From: Dong Aisheng <aisheng.dong@nxp.com>
+Date: Wed, 31 Jul 2019 17:11:32 +0800
+Subject: [PATCH] Revert "ASoC: fsl_sai: derive TX FIFO watermark from FIFO
+ depth"
+
+This reverts commit bd517707d85f19a7339ea8b882fcbf0fd9976bd6.
+---
+ sound/soc/fsl/fsl_sai.c | 4 +---
+ sound/soc/fsl/fsl_sai.h | 1 -
+ 2 files changed, 1 insertion(+), 4 deletions(-)
+
+--- a/sound/soc/fsl/fsl_sai.c
++++ b/sound/soc/fsl/fsl_sai.c
+@@ -640,7 +640,7 @@ static int fsl_sai_dai_probe(struct snd_
+ 	regmap_write(sai->regmap, FSL_SAI_RCSR, 0);
+ 
+ 	regmap_update_bits(sai->regmap, FSL_SAI_TCR1, FSL_SAI_CR1_RFW_MASK,
+-			   sai->soc_data->fifo_depth - FSL_SAI_MAXBURST_TX);
++			   FSL_SAI_MAXBURST_TX * 2);
+ 	regmap_update_bits(sai->regmap, FSL_SAI_RCR1, FSL_SAI_CR1_RFW_MASK,
+ 			   FSL_SAI_MAXBURST_RX - 1);
+ 
+@@ -925,12 +925,10 @@ static int fsl_sai_remove(struct platfor
+ 
+ static const struct fsl_sai_soc_data fsl_sai_vf610_data = {
+ 	.use_imx_pcm = false,
+-	.fifo_depth = 32,
+ };
+ 
+ static const struct fsl_sai_soc_data fsl_sai_imx6sx_data = {
+ 	.use_imx_pcm = true,
+-	.fifo_depth = 32,
+ };
+ 
+ static const struct of_device_id fsl_sai_ids[] = {
+--- a/sound/soc/fsl/fsl_sai.h
++++ b/sound/soc/fsl/fsl_sai.h
+@@ -128,7 +128,6 @@
+ 
+ struct fsl_sai_soc_data {
+ 	bool use_imx_pcm;
+-	unsigned int fifo_depth;
+ };
+ 
+ struct fsl_sai {