diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/801-audio-0030-MLK-15960-2-ASoC-fsl_sai-refine-the-pm-runtime-funct.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/801-audio-0030-MLK-15960-2-ASoC-fsl_sai-refine-the-pm-runtime-funct.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/801-audio-0030-MLK-15960-2-ASoC-fsl_sai-refine-the-pm-runtime-funct.patch b/target/linux/layerscape/patches-5.4/801-audio-0030-MLK-15960-2-ASoC-fsl_sai-refine-the-pm-runtime-funct.patch new file mode 100644 index 0000000000..5232a69894 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/801-audio-0030-MLK-15960-2-ASoC-fsl_sai-refine-the-pm-runtime-funct.patch @@ -0,0 +1,36 @@ +From 136762e82a9c4974c15b0525245092d11a825cee Mon Sep 17 00:00:00 2001 +From: Shengjiu Wang <shengjiu.wang@freescale.com> +Date: Wed, 12 Jul 2017 18:00:58 +0800 +Subject: [PATCH] MLK-15960-2: ASoC: fsl_sai: refine the pm runtime function + +In imx8qm/imx8qxp, the power domain of IP is enabled when +pm_runtime_get_sync() is called, and disabled when pm_runtime +_put_sync() is called. when power domain is disabled, the value +of registers will lost, so we need to use the regcache_sync() +to restore the registers in fsl_sai_runtime_resume. + +Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com> +--- + sound/soc/fsl/fsl_sai.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/sound/soc/fsl/fsl_sai.c ++++ b/sound/soc/fsl/fsl_sai.c +@@ -1096,6 +1096,8 @@ static int fsl_sai_probe(struct platform + + pm_runtime_enable(&pdev->dev); + ++ regcache_cache_only(sai->regmap, true); ++ + ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component, + &fsl_sai_dai, 1); + if (ret) +@@ -1139,6 +1141,8 @@ static int fsl_sai_runtime_suspend(struc + { + struct fsl_sai *sai = dev_get_drvdata(dev); + ++ regcache_cache_only(sai->regmap, true); ++ + if (sai->mclk_streams & BIT(SNDRV_PCM_STREAM_CAPTURE)) + clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[0]]); + |