1 files changed, 0 insertions, 48 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0299-bcm2835-i2s-Reduce-the-TX-DREQ-threshold.patch b/target/linux/brcm2708/patches-4.4/0299-bcm2835-i2s-Reduce-the-TX-DREQ-threshold.patch
deleted file mode 100644
index ca2ba89595..0000000000
--- a/target/linux/brcm2708/patches-4.4/0299-bcm2835-i2s-Reduce-the-TX-DREQ-threshold.patch
+++ /dev/null
@@ -1,48 +0,0 @@
-From 5178a5d56cff7e0db126a456355a710782d51ba8 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Thu, 21 Apr 2016 15:44:14 +0100
-Subject: [PATCH] bcm2835-i2s: Reduce the TX DREQ threshold
-
-TX FIFO overrun is thought to be the cause of channel swapping, so
-reducing the DREQ threshold seems reasonable and appears to be
-effective.
-
-See: https://github.com/raspberrypi/linux/issues/1417
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- sound/soc/bcm/bcm2835-i2s.c | 21 ++++++++++++++-------
- 1 file changed, 14 insertions(+), 7 deletions(-)
-
---- a/sound/soc/bcm/bcm2835-i2s.c
-+++ b/sound/soc/bcm/bcm2835-i2s.c
-@@ -555,15 +555,22 @@ static int bcm2835_i2s_hw_params(struct
- 
- 	/* Setup the DMA parameters */
- 	regmap_update_bits(dev->i2s_regmap, BCM2835_I2S_CS_A_REG,
--			BCM2835_I2S_RXTHR(1)
--			| BCM2835_I2S_TXTHR(1)
--			| BCM2835_I2S_DMAEN, 0xffffffff);
-+			   BCM2835_I2S_RXTHR(3)
-+			   | BCM2835_I2S_TXTHR(3)
-+			   | BCM2835_I2S_DMAEN,
-+			   BCM2835_I2S_RXTHR(1)
-+			   | BCM2835_I2S_TXTHR(1)
-+			   | BCM2835_I2S_DMAEN);
- 
- 	regmap_update_bits(dev->i2s_regmap, BCM2835_I2S_DREQ_A_REG,
--			  BCM2835_I2S_TX_PANIC(0x10)
--			| BCM2835_I2S_RX_PANIC(0x30)
--			| BCM2835_I2S_TX(0x30)
--			| BCM2835_I2S_RX(0x20), 0xffffffff);
-+			   BCM2835_I2S_TX_PANIC(0x7f)
-+			   | BCM2835_I2S_RX_PANIC(0x7f)
-+			   | BCM2835_I2S_TX(0x7f)
-+			   | BCM2835_I2S_RX(0x7f),
-+			   BCM2835_I2S_TX_PANIC(0x10)
-+			   | BCM2835_I2S_RX_PANIC(0x30)
-+			   | BCM2835_I2S_TX(0x20)
-+			   | BCM2835_I2S_RX(0x20));
- 
- 	/* Clear FIFOs */
- 	bcm2835_i2s_clear_fifos(dev, true, true);