{"id":2230123,"url":"http://patchwork.ozlabs.org/api/1.2/covers/2230123/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20260429100028.2739711-1-shengjiu.wang@nxp.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.2/projects/2/?format=json","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/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260429100028.2739711-1-shengjiu.wang@nxp.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260429100028.2739711-1-shengjiu.wang@nxp.com/","date":"2026-04-29T10:00:22","name":"[v2,0/5] ASoC: fsl-asoc-card: Add some improvements","submitter":{"id":75958,"url":"http://patchwork.ozlabs.org/api/1.2/people/75958/?format=json","name":"Shengjiu 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<shengjiu.wang@nxp.com>","To":"shengjiu.wang@gmail.com,\n\tXiubo.Lee@gmail.com,\n\tfestevam@gmail.com,\n\tnicoleotsuka@gmail.com,\n\tlgirdwood@gmail.com,\n\tbroonie@kernel.org,\n\tperex@perex.cz,\n\ttiwai@suse.com,\n\tlinux-sound@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org","Subject":"[PATCH v2 0/5] ASoC: fsl-asoc-card: Add some improvements","Date":"Wed, 29 Apr 2026 18:00:22 +0800","Message-Id":"<20260429100028.2739711-1-shengjiu.wang@nxp.com>","X-Mailer":"git-send-email 2.37.1","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","X-ClientProxiedBy":"SG2P153CA0005.APCP153.PROD.OUTLOOK.COM (2603:1096::15) To\n AM0PR04MB7044.eurprd04.prod.outlook.com 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0de8a985-ef2b-4fd0-890d-08dea5d5db91","X-MS-Exchange-CrossTenant-AuthSource":"AM0PR04MB7044.eurprd04.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"29 Apr 2026 09:58:26.5304\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 dWyczq+OEuHgWEMBf6SpsIoJOseu0JZ2udVZgNUnGhL7GhCNipiVtojlOgTIXFugL8R5D2BAEftYkiAuj2TUcw==","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"PAXPR04MB8269","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":"This patch series addresses several issues in the Freescale Generic ASoC\nSound Card driver related to hardware limitations, DPCM path switching,\nand codec-specific constraints.\n\nThe fsl-asoc-card driver provides a generic machine driver for i.MX SoCs,\nsupporting various codecs and optional ASRC (Asynchronous Sample Rate\nConverter) for sample rate conversion. During testing several issues were\nidentified:\n\n1. Missing channel constraint propagation in DPCM mode\n2. DPCM path switching causing audio dropouts\n3. Hardware channel alignment requirements\n4. Clock generation limitations preventing certain audio formats\n5. Codec-specific PLL frequency violations\n\nchanges in v2:\n- Patch 3/5: remove the static constraint_rates and constraint_channels\n  variable in fsl_asoc_card_startup(), move them to\n  struct fsl_asoc_card_priv, to avoid conflict with other instance\n- Patch 4/5: make exclude S20_3LE format specific to WM8960/WM8962 + SAI\n  case, to avoid impact to other users.\n\nShengjiu Wang (5):\n  ASoC: fsl-asoc-card: enable dpcm_merged_chan flag for ASRC frontend\n  ASoC: fsl-asoc-card: enable ignore_pmdown_time for ASRC case\n  ASoC: fsl-asoc-card: add channel and rate constraints for CS42888\n  ASoC: fsl-asoc-card: exclude S20_3LE format for WM8960/WM8962 + SAI\n  ASoC: fsl-asoc-card: reduce WM8904 PLL ratio to meet frequency limit\n\n sound/soc/fsl/fsl-asoc-card.c | 111 +++++++++++++++++++++++++++++++++-\n 1 file changed, 110 insertions(+), 1 deletion(-)"}