Openwrt/target/linux/layerscape/patches-5.4/801-audio-0046-Sound-Soc-fsl-Set-SAI-Channel-Mode-to-Output-Mode.patch
Yangbo Lu cddd459140 layerscape: add patches-5.4
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
2020-05-07 12:53:06 +02:00

73 lines
2.9 KiB
Diff

From 494c1f9c5c86396d2974c6072f728e2325b72703 Mon Sep 17 00:00:00 2001
From: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Date: Wed, 7 Mar 2018 11:35:07 +0200
Subject: [PATCH] Sound: Soc: fsl: Set SAI Channel Mode to Output Mode
Transmit data pins will output zero when slots are masked or channels
are disabled. In CHMOD TDM mode, transmit data pins are tri-stated when
slots are masked or channels are disabled. When data pins are tri-stated,
there is noise on some channels when FS clock value is high and data is
read while fsclk is transitioning from high to low.
Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
sound/soc/fsl/fsl_sai.c | 14 +++++++++++---
sound/soc/fsl/fsl_sai.h | 2 ++
2 files changed, 13 insertions(+), 3 deletions(-)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -589,6 +589,11 @@ static int fsl_sai_hw_params(struct snd_
val_cr4 |= FSL_SAI_CR4_FRSZ(slots);
+ /* Output Mode - data pins transmit 0 when slots are masked
+ * or channels are disabled
+ */
+ val_cr4 |= FSL_SAI_CR4_CHMOD;
+
/*
* For SAI master mode, when Tx(Rx) sync with Rx(Tx) clock, Rx(Tx) will
* generate bclk and frame clock for Tx(Rx), we should set RCR4(TCR4),
@@ -599,14 +604,16 @@ static int fsl_sai_hw_params(struct snd_
if (!sai->slave_mode[tx]) {
if (!sai->synchronous[TX] && sai->synchronous[RX] && !tx) {
regmap_update_bits(sai->regmap, FSL_SAI_TCR4(offset),
- FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
+ FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK |
+ FSL_SAI_CR4_CHMOD_MASK,
val_cr4);
regmap_update_bits(sai->regmap, FSL_SAI_TCR5(offset),
FSL_SAI_CR5_WNW_MASK | FSL_SAI_CR5_W0W_MASK |
FSL_SAI_CR5_FBT_MASK, val_cr5);
} else if (!sai->synchronous[RX] && sai->synchronous[TX] && tx) {
regmap_update_bits(sai->regmap, FSL_SAI_RCR4(offset),
- FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
+ FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK |
+ FSL_SAI_CR4_CHMOD_MASK,
val_cr4);
regmap_update_bits(sai->regmap, FSL_SAI_RCR5(offset),
FSL_SAI_CR5_WNW_MASK | FSL_SAI_CR5_W0W_MASK |
@@ -682,7 +689,8 @@ static int fsl_sai_hw_params(struct snd_
}
regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx, offset),
- FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
+ FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK |
+ FSL_SAI_CR4_CHMOD_MASK,
val_cr4);
regmap_update_bits(sai->regmap, FSL_SAI_xCR5(tx, offset),
FSL_SAI_CR5_WNW_MASK | FSL_SAI_CR5_W0W_MASK |
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -129,6 +129,8 @@
#define FSL_SAI_CR4_FRSZ_MASK (0x1f << 16)
#define FSL_SAI_CR4_SYWD(x) (((x) - 1) << 8)
#define FSL_SAI_CR4_SYWD_MASK (0x1f << 8)
+#define FSL_SAI_CR4_CHMOD (1 << 5)
+#define FSL_SAI_CR4_CHMOD_MASK (1 << 5)
#define FSL_SAI_CR4_MF BIT(4)
#define FSL_SAI_CR4_FSE BIT(3)
#define FSL_SAI_CR4_FSP BIT(1)