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GET /api/patches/2219923/?format=api
{ "id": 2219923, "url": "http://patchwork.ozlabs.org/api/patches/2219923/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260404183547.46509-2-marex@nabladev.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/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": "<20260404183547.46509-2-marex@nabladev.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260404183547.46509-2-marex@nabladev.com/", "date": "2026-04-04T18:35:01", "name": "[v2,2/2] ASoC: fsl_sai: Add RX/TX BCLK swap support", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "7023ad670f0f84d743b70ac6bdec06ad18cdc34c", "submitter": { "id": 91452, "url": "http://patchwork.ozlabs.org/api/people/91452/?format=api", "name": "Marek Vasut", "email": "marex@nabladev.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260404183547.46509-2-marex@nabladev.com/mbox/", "series": [ { "id": 498782, "url": "http://patchwork.ozlabs.org/api/series/498782/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=498782", "date": "2026-04-04T18:35:01", "name": "[v2,1/2] ASoC: dt-bindings: fsl-sai: Document RX/TX BCLK swap support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/498782/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219923/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219923/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-19328-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=nabladev.com header.i=@nabladev.com header.a=rsa-sha256\n header.s=dkim header.b=ViRbAUtR;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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a=rsa-sha256; c=relaxed/relaxed; d=nabladev.com;\n\ts=dkim; t=1775327757; h=from:subject:date:message-id:to:cc:mime-version:\n\t content-transfer-encoding:in-reply-to:references;\n\tbh=NSBm8CQ9KV1sZc8xqRJrGb0nqJcw/MhMvwITjTm4MlU=;\n\tb=ViRbAUtRvwhoms+GPAP50uGr+Fp0PaHUne+gjQOz+eAmdLPm7y0XhoHq4vwoY1j4vwGZiq\n\tOFxMEJMjVq7q5t4IWVCuReOUCQcDeO2YwfwTUdjqiCDOVU58T62n5vcFqawha1xaZKQEZ0\n\tX3vrGhWvNAShQ1aweYxL0DXdk8hT9mcc5poluSoIvX7oqZ1sZOSMh8HVVOgb3F1L68eVcc\n\trd5N4QorFVSLTLj/RlnZqyosbDQjqtW4rV+LUeqvde2p2JSogw2vXDdr/odeb0S2vQXOcQ\n\thz6OkvMGiyjgwnmwY+Tr5X6YPA8TbUys9pj8u6OPZpLPe7iAvIOy/jE+PKojiQ==", "From": "Marek Vasut <marex@nabladev.com>", "To": "linux-sound@vger.kernel.org", "Cc": "Marek Vasut <marex@nabladev.com>,\n\tConor Dooley <conor+dt@kernel.org>,\n\tFabio Estevam <festevam@gmail.com>,\n\tJaroslav Kysela <perex@perex.cz>,\n\tKrzysztof Kozlowski <krzk+dt@kernel.org>,\n\tLiam Girdwood <lgirdwood@gmail.com>,\n\tMark Brown <broonie@kernel.org>,\n\tNicolin Chen <nicoleotsuka@gmail.com>,\n\tRob Herring <robh@kernel.org>,\n\tShengjiu Wang <shengjiu.wang@gmail.com>,\n\tTakashi Iwai <tiwai@suse.com>,\n\tXiubo Li <Xiubo.Lee@gmail.com>,\n\tdevicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org", "Subject": "[PATCH v2 2/2] ASoC: fsl_sai: Add RX/TX BCLK swap support", "Date": "Sat, 4 Apr 2026 20:35:01 +0200", "Message-ID": "<20260404183547.46509-2-marex@nabladev.com>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260404183547.46509-1-marex@nabladev.com>", "References": "<20260404183547.46509-1-marex@nabladev.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Last-TLS-Session-Version": "TLSv1.3", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Add support for setting the Bit Clock Swap bit in CR2 register\nvia new \"fsl,sai-bit-clock-swap\" DT property. This bit swaps the\nbit clock used by the transmitter or receiver in asynchronous mode,\ni.e. makes transmitter use RX_BCLK and TX_SYNC, and vice versa,\nmakes receiver use TX_BCLK and RX_SYNC.\n\nSigned-off-by: Marek Vasut <marex@nabladev.com>\n---\nCc: Conor Dooley <conor+dt@kernel.org>\nCc: Fabio Estevam <festevam@gmail.com>\nCc: Jaroslav Kysela <perex@perex.cz>\nCc: Krzysztof Kozlowski <krzk+dt@kernel.org>\nCc: Liam Girdwood <lgirdwood@gmail.com>\nCc: Mark Brown <broonie@kernel.org>\nCc: Nicolin Chen <nicoleotsuka@gmail.com>\nCc: Rob Herring <robh@kernel.org>\nCc: Shengjiu Wang <shengjiu.wang@gmail.com>\nCc: Takashi Iwai <tiwai@suse.com>\nCc: Xiubo Li <Xiubo.Lee@gmail.com>\nCc: devicetree@vger.kernel.org\nCc: linux-kernel@vger.kernel.org\nCc: linux-sound@vger.kernel.org\nCc: linuxppc-dev@lists.ozlabs.org\n---\nV2: Update email, rebase on next\n---\n sound/soc/fsl/fsl_sai.c | 7 ++++++-\n sound/soc/fsl/fsl_sai.h | 2 ++\n 2 files changed, 8 insertions(+), 1 deletion(-)", "diff": "diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c\nindex bd336d2e4cb38..87a40e2b9fdf7 100644\n--- a/sound/soc/fsl/fsl_sai.c\n+++ b/sound/soc/fsl/fsl_sai.c\n@@ -355,6 +355,9 @@ static int fsl_sai_set_dai_fmt_tr(struct snd_soc_dai *cpu_dai,\n \tunsigned int ofs = sai->soc_data->reg_offset;\n \tu32 val_cr2 = 0, val_cr4 = 0;\n \n+\tif (sai->is_bit_clock_swap)\n+\t\tval_cr2 |= FSL_SAI_CR2_BCS;\n+\n \tif (!sai->is_lsb_first)\n \t\tval_cr4 |= FSL_SAI_CR4_MF;\n \n@@ -453,7 +456,8 @@ static int fsl_sai_set_dai_fmt_tr(struct snd_soc_dai *cpu_dai,\n \t}\n \n \tregmap_update_bits(sai->regmap, FSL_SAI_xCR2(tx, ofs),\n-\t\t\t FSL_SAI_CR2_BCP | FSL_SAI_CR2_BCD_MSTR, val_cr2);\n+\t\t\t FSL_SAI_CR2_BCS | FSL_SAI_CR2_BCP | FSL_SAI_CR2_BCD_MSTR,\n+\t\t\t val_cr2);\n \tregmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx, ofs),\n \t\t\t FSL_SAI_CR4_MF | FSL_SAI_CR4_FSE |\n \t\t\t FSL_SAI_CR4_FSP | FSL_SAI_CR4_FSD_MSTR, val_cr4);\n@@ -1507,6 +1511,7 @@ static int fsl_sai_probe(struct platform_device *pdev)\n \tsai->soc_data = of_device_get_match_data(dev);\n \n \tsai->is_lsb_first = of_property_read_bool(np, \"lsb-first\");\n+\tsai->is_bit_clock_swap = of_property_read_bool(np, \"fsl,sai-bit-clock-swap\");\n \n \tbase = devm_platform_get_and_ioremap_resource(pdev, 0, &sai->res);\n \tif (IS_ERR(base))\ndiff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h\nindex af967833b6eda..6d84e5ff2258e 100644\n--- a/sound/soc/fsl/fsl_sai.h\n+++ b/sound/soc/fsl/fsl_sai.h\n@@ -118,6 +118,7 @@\n \n /* SAI Transmit and Receive Configuration 2 Register */\n #define FSL_SAI_CR2_SYNC\tBIT(30)\n+#define FSL_SAI_CR2_BCS\t\tBIT(29)\n #define FSL_SAI_CR2_BCI\t\tBIT(28)\n #define FSL_SAI_CR2_MSEL_MASK\t(0x3 << 26)\n #define FSL_SAI_CR2_MSEL_BUS\t0\n@@ -301,6 +302,7 @@ struct fsl_sai {\n \tstruct fsl_sai_dl_cfg *dl_cfg;\n \tunsigned int dl_cfg_cnt;\n \tbool mclk_direction_output;\n+\tbool is_bit_clock_swap;\n \n \tunsigned int mclk_id[2];\n \tunsigned int mclk_streams;\n", "prefixes": [ "v2", "2/2" ] }