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GET /api/1.1/patches/2227833/?format=api
{ "id": 2227833, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2227833/?format=api", "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/1.1/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260424103806.2276780-3-shengjiu.wang@nxp.com>", "date": "2026-04-24T10:38:03", "name": "[2/5] ASoC: fsl-asoc-card: enable ignore_pmdown_time for ASRC case", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "870eda9d4ec9a9df9cde3e0be8dedb1bc4f2ab5a", "submitter": { "id": 75958, "url": "http://patchwork.ozlabs.org/api/1.1/people/75958/?format=api", "name": "Shengjiu Wang", "email": "shengjiu.wang@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260424103806.2276780-3-shengjiu.wang@nxp.com/mbox/", "series": [ { "id": 501341, "url": "http://patchwork.ozlabs.org/api/1.1/series/501341/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501341", "date": "2026-04-24T10:38:01", "name": "ASoC: fsl-asoc-card: Add some improvements", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501341/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227833/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227833/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20071-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": 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(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 <shengjiu.wang@nxp.com>\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" ] }