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GET /api/1.2/patches/2230128/?format=api
{ "id": 2230128, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2230128/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260429100028.2739711-6-shengjiu.wang@nxp.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.2/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/", "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": "<20260429100028.2739711-6-shengjiu.wang@nxp.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260429100028.2739711-6-shengjiu.wang@nxp.com/", "date": "2026-04-29T10:00:27", "name": "[v2,5/5] ASoC: fsl-asoc-card: reduce WM8904 PLL ratio to meet frequency limit", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "b0fa40160f8a4a78f74fd0f1a346aa633215ffb4", "submitter": { "id": 75958, "url": "http://patchwork.ozlabs.org/api/1.2/people/75958/?format=api", "name": "Shengjiu Wang", "email": "shengjiu.wang@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260429100028.2739711-6-shengjiu.wang@nxp.com/mbox/", "series": [ { "id": 502028, "url": "http://patchwork.ozlabs.org/api/1.2/series/502028/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502028", "date": "2026-04-29T10:00:22", "name": "ASoC: fsl-asoc-card: Add some improvements", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/502028/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230128/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2230128/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20268-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=nxp.com header.i=@nxp.com header.a=rsa-sha256\n header.s=selector1 header.b=GlPuKi3x;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-20268-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)", "lists.ozlabs.org;\n arc=pass smtp.remote-ip=\"2a01:111:f403:c200::3\" 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envelope-from=shengjiu.wang@nxp.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=nxp.com", "i=1; mx.microsoft.com 1; spf=pass\n smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass\n header.d=nxp.com; arc=none" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=t0Qx/JKN7UCYKtrFKJOHk4u2zJLqGN6fxPhI9K+8mX0=;\n b=GlPuKi3x/68JVOoaEANKnr97hBvhMG0sqh+vGYevVwCr9JYx08zdO4wyOuFetoEYZfZVvbcNdGTwXknJbRqOtxJ7iTv5jfP+qWndd0EbSDe8AyIGHkwo0p5w3o/aF9rCkqW8AN0hPn1L699Ht0QQz4XgZd2VjTbaodRydUTWXgZT8lToc/1H2QhZgaHZBVs5CQhV7YSx0CuJtEfI0853tT3sq6Rfpe7sSY/6BTHLk1lVE4DHjFMjaZW+U+pFaQL08Yfo3NSvIPahzvGnSwRKr5Wm5ojeMszNasoeoUrNuqCgRqkV8fqImwdVDpK2X2VLXp5OEoBp6plNh3mh/0X9LA==", "From": "Shengjiu Wang <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 5/5] ASoC: fsl-asoc-card: reduce WM8904 PLL ratio to meet\n frequency limit", "Date": "Wed, 29 Apr 2026 18:00:27 +0800", "Message-Id": "<20260429100028.2739711-6-shengjiu.wang@nxp.com>", "X-Mailer": "git-send-email 2.37.1", "In-Reply-To": "<20260429100028.2739711-1-shengjiu.wang@nxp.com>", "References": "<20260429100028.2739711-1-shengjiu.wang@nxp.com>", "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 (2603:10a6:208:191::20)", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", 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(2024-03-25) on lists.ozlabs.org" }, "content": "WM8904 has a 27 MHz PLL frequency limit. The current S24_LE PLL ratio\nof 384 exceeds this at high sample rates (96 kHz × 384 = 36.864 MHz).\n\nReduce the ratio to 192 for WM8904, keeping PLL within limits at all\nsupported rates (96 kHz × 192 = 18.432 MHz).\n\nAdd codec-specific pll_ratio_s24 field, default 384, override to 192\nfor WM8904.\n\nSigned-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>\n---\n sound/soc/fsl/fsl-asoc-card.c | 8 +++++++-\n 1 file changed, 7 insertions(+), 1 deletion(-)", "diff": "diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c\nindex 44083d15f6e5..709543308fe9 100644\n--- a/sound/soc/fsl/fsl-asoc-card.c\n+++ b/sound/soc/fsl/fsl-asoc-card.c\n@@ -75,6 +75,9 @@ static const struct snd_pcm_hw_constraint_list cs42888_channel_constraints = {\n * @mclk_id: MCLK (or main clock) id for set_sysclk()\n * @fll_id: FLL (or secordary clock) id for set_sysclk()\n * @pll_id: PLL id for set_pll()\n+ * @pll_ratio_s24: PLL output ratio for S24_LE format (PLL_freq = sample_rate × ratio)\n+ * Default is 384, but some codecs (e.g., WM8904) require lower values\n+ * to stay within PLL frequency limits\n */\n struct codec_priv {\n \tstruct clk *mclk;\n@@ -83,6 +86,7 @@ struct codec_priv {\n \tu32 mclk_id;\n \tint fll_id;\n \tint pll_id;\n+\tint pll_ratio_s24;\n };\n \n /**\n@@ -255,7 +259,7 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,\n \n \t\tif (codec_priv->pll_id >= 0 && codec_priv->fll_id >= 0) {\n \t\t\tif (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)\n-\t\t\t\tpll_out = priv->sample_rate * 384;\n+\t\t\t\tpll_out = priv->sample_rate * codec_priv->pll_ratio_s24;\n \t\t\telse\n \t\t\t\tpll_out = priv->sample_rate * 256;\n \n@@ -815,6 +819,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)\n \tfor (codec_idx = 0; codec_idx < 2; codec_idx++) {\n \t\tpriv->codec_priv[codec_idx].fll_id = -1;\n \t\tpriv->codec_priv[codec_idx].pll_id = -1;\n+\t\tpriv->codec_priv[codec_idx].pll_ratio_s24 = 384;\n \t}\n \n \t/* Diversify the card configurations */\n@@ -935,6 +940,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)\n \t\tpriv->codec_priv[0].mclk_id = WM8904_FLL_MCLK;\n \t\tpriv->codec_priv[0].fll_id = WM8904_CLK_FLL;\n \t\tpriv->codec_priv[0].pll_id = WM8904_FLL_MCLK;\n+\t\tpriv->codec_priv[0].pll_ratio_s24 = 192;\n \t\tpriv->dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;\n \t} else if (of_device_is_compatible(np, \"fsl,imx-audio-spdif\")) {\n \t\tret = fsl_asoc_card_spdif_init(codec_np, cpu_np, codec_dai_name, priv);\n", "prefixes": [ "v2", "5/5" ] }