{"id":2227833,"url":"http://patchwork.ozlabs.org/api/patches/2227833/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260424103806.2276780-3-shengjiu.wang@nxp.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC 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cb50a91d-46d4-4ff6-45c3-08dea1ed4b11","X-MS-Exchange-CrossTenant-AuthSource":"AM0PR04MB7044.eurprd04.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"24 Apr 2026 10:36:07.3125\n (UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"686ea1d3-bc2b-4c6f-a92c-d99c5c301635","X-MS-Exchange-CrossTenant-MailboxType":"HOSTED","X-MS-Exchange-CrossTenant-UserPrincipalName":"\n D4isY/aYaopU8Dzk3AvhnoNC7Fm2n2+GZlTIePFU6NyzWPs3xfPTUVnRXeFzjV8moHocRHU4TF0LQP+IKgjmzA==","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"PAXPR04MB9075","X-Spam-Status":"No, score=0.8 required=3.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,\n\tSPF_HELO_PASS,T_SPF_PERMERROR autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"Problem:\nWhen switching from ASRC path (hw:0,1) to direct path (hw:0,0),\naudio stops after 5 seconds due to DAPM powering down shared widgets.\n\nScenario:\n1. Play on hw:0,1 (ASRC): ASRC-Playback → CPU-Playback → Codec\n2. Stop playback\n3. Play on hw:0,0 (Direct): CPU-Playback → Codec\n4. After 5s: No sound (DAPM powered down CPU-Playback)\n\nRoot Cause:\nDAPM sees ASRC-Playback disconnected and powers down the entire\npath including CPU-Playback, even though CPU-Playback is still\nneeded for the direct path.\n\nSolution:\nEnable ignore_pmdown_time for DPCM links to prevent premature\nwidget power-down when switching between paths.\n\nSigned-off-by: Shengjiu Wang \n---\n sound/soc/fsl/fsl-asoc-card.c | 2 ++\n 1 file changed, 2 insertions(+)","diff":"diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c\nindex 41cd2fc2ea56..e08e135886f7 100644\n--- a/sound/soc/fsl/fsl-asoc-card.c\n+++ b/sound/soc/fsl/fsl-asoc-card.c\n@@ -990,6 +990,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)\n \tif (asrc_pdev) {\n \t\t/* DPCM DAI Links only if ASRC exists */\n \t\tpriv->dai_link[1].dpcm_merged_chan = 1;\n+\t\tpriv->dai_link[1].ignore_pmdown_time = 1;\n \t\tpriv->dai_link[1].cpus->of_node = asrc_np;\n \t\tpriv->dai_link[1].platforms->of_node = asrc_np;\n \t\tfor_each_link_codecs((&(priv->dai_link[2])), codec_idx, codec_comp) {\n@@ -999,6 +1000,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)\n \t\t}\n \t\tpriv->dai_link[2].cpus->of_node = cpu_np;\n \t\tpriv->dai_link[2].dai_fmt = priv->dai_fmt;\n+\t\tpriv->dai_link[2].ignore_pmdown_time = 1;\n \t\tpriv->card.num_links = 3;\n \n \t\tret = of_property_read_u32(asrc_np, \"fsl,asrc-rate\",\n","prefixes":["2/5"]}