From nobody Sun May 24 18:42:23 2026 Received: from smtpbgbr2.qq.com (smtpbgbr2.qq.com [54.207.22.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F14DA3A1691; Fri, 22 May 2026 13:12:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.22.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779455563; cv=none; b=ovblzPuIwwt1zLv8uZlEDUA3zJBdVN2PJBpnsjtHtDwpuzY+7KC0sz6bPp5hZNciUpNsnTILvuH2cBQn3LYXQRru+C4f10/55LNw11XIh9JW2Zb9c89pWJrlIFbwn/5Aqn3u8z61axrXAwkB3YXZHQ0TMmQtunAW8h5RSwXmtpk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779455563; c=relaxed/simple; bh=WCbZ8iopcLSLXkEHIgHHSSkd2u1qQfx30P4JpAz6ZKw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GOj2/x/+tF4fXUYIFuzFT6F8ATs9EqnXL0oRpB2oKijPXhNi8R6u0Dx/z8ANM1t1Y28DUZdv48sMc+EZwycEqzkiR56KGkYQFAxFSUoNVQ2zZvZg/jK24IwnrjNW35Qd9FxX0pSZPPbZJ7er4udkjAlA4jfUMdTAcof4x2JvxYg= ARC-Authentication-Results: i=1; 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Fri, 22 May 2026 21:12:18 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 14195901067407488268 EX-QQ-RecipientCnt: 15 From: Troy Mitchell Date: Fri, 22 May 2026 21:12:14 +0800 Subject: [PATCH v3 1/2] ASoC: dt-bindings: add SpacemiT K3 SoC compatible Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260522-k3-i2s-v3-1-08e3eb811d93@linux.spacemit.com> References: <20260522-k3-i2s-v3-0-08e3eb811d93@linux.spacemit.com> In-Reply-To: <20260522-k3-i2s-v3-0-08e3eb811d93@linux.spacemit.com> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Yixun Lan , Jinmei Wei , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-sound@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Troy Mitchell X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; 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The K3 I2S IP is the same as K1 but requires additional clocks: a dedicated sysclk_div clock, along with common_sysclk and common_bclk which are shared across multiple I2S controllers on K3. Acked-by: Rob Herring (Arm) Signed-off-by: Troy Mitchell --- .../devicetree/bindings/sound/spacemit,k1-i2s.yaml | 31 ++++++++++++++++++= ++-- 1 file changed, 29 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/spacemit,k1-i2s.yaml b= /Documentation/devicetree/bindings/sound/spacemit,k1-i2s.yaml index 55bd0b307d22..240d90402e4f 100644 --- a/Documentation/devicetree/bindings/sound/spacemit,k1-i2s.yaml +++ b/Documentation/devicetree/bindings/sound/spacemit,k1-i2s.yaml @@ -4,7 +4,7 @@ $id: http://devicetree.org/schemas/sound/spacemit,k1-i2s.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# =20 -title: K1 I2S controller +title: SpacemiT K1/K3 I2S controller =20 description: The I2S bus (Inter-IC sound bus) is a serial link for digital @@ -15,27 +15,54 @@ maintainers: =20 allOf: - $ref: dai-common.yaml# + - if: + properties: + compatible: + contains: + const: spacemit,k3-i2s + then: + properties: + clocks: + minItems: 7 + clock-names: + minItems: 7 + else: + properties: + clocks: + maxItems: 4 + clock-names: + maxItems: 4 =20 properties: compatible: - const: spacemit,k1-i2s + enum: + - spacemit,k1-i2s + - spacemit,k3-i2s =20 reg: maxItems: 1 =20 clocks: + minItems: 4 items: - description: clock for I2S sysclk - description: clock for I2S bclk - description: clock for I2S bus - description: clock for I2S controller + - description: clock for I2S sysclk divider + - description: clock for I2S common sysclk + - description: clock for I2S common bclk =20 clock-names: + minItems: 4 items: - const: sysclk - const: bclk - const: bus - const: func + - const: sysclk_div + - const: c_sysclk + - const: c_bclk =20 dmas: minItems: 1 --=20 2.54.0 From nobody Sun May 24 18:42:23 2026 Received: from smtpbgau2.qq.com (smtpbgau2.qq.com [54.206.34.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 68D8B35675F; 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These clocks only exist on K3 and are not present on K1. The sysclk_div clock is present on most K3 I2S controllers except I2S1. The c_sysclk and c_bclk clocks are shared across multiple I2S controllers on K3. Use devm_clk_get_optional_enabled() to acquire these clocks so that the driver works on both K1 (where they are absent) and K3 without needing SoC-specific match data. For K3, the sysclk_div rate is set before sysclk in set_sysclk, and the common clock rates are configured in hw_params based on the sample rate. Signed-off-by: Troy Mitchell --- sound/soc/spacemit/k1_i2s.c | 36 +++++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) diff --git a/sound/soc/spacemit/k1_i2s.c b/sound/soc/spacemit/k1_i2s.c index 1cb99f1abc7c..4e655d714623 100644 --- a/sound/soc/spacemit/k1_i2s.c +++ b/sound/soc/spacemit/k1_i2s.c @@ -53,6 +53,9 @@ struct spacemit_i2s_dev { struct clk *sysclk; struct clk *bclk; struct clk *sspa_clk; + struct clk *sysclk_div; + struct clk *c_sysclk; + struct clk *c_bclk; =20 struct snd_dmaengine_dai_dma_data capture_dma_data; struct snd_dmaengine_dai_dma_data playback_dma_data; @@ -189,6 +192,14 @@ static int spacemit_i2s_hw_params(struct snd_pcm_subst= ream *substream, params_rate(params) * data_bits; =20 + ret =3D clk_set_rate(i2s->c_sysclk, bclk_rate * 2); + if (ret) + return ret; + + ret =3D clk_set_rate(i2s->c_bclk, bclk_rate); + if (ret) + return ret; + ret =3D clk_set_rate(i2s->bclk, bclk_rate); if (ret) return ret; @@ -200,10 +211,17 @@ static int spacemit_i2s_set_sysclk(struct snd_soc_dai= *cpu_dai, int clk_id, unsigned int freq, int dir) { struct spacemit_i2s_dev *i2s =3D dev_get_drvdata(cpu_dai->dev); + int ret; =20 if (freq =3D=3D 0) return 0; =20 + if (i2s->sysclk_div) { + ret =3D clk_set_rate(i2s->sysclk_div, freq); + if (ret) + return ret; + } + return clk_set_rate(i2s->sysclk, freq); } =20 @@ -418,6 +436,21 @@ static int spacemit_i2s_probe(struct platform_device *= pdev) return dev_err_probe(i2s->dev, PTR_ERR(i2s->sspa_clk), "failed to enable sspa clock\n"); =20 + i2s->sysclk_div =3D devm_clk_get_optional_enabled(i2s->dev, "sysclk_div"); + if (IS_ERR(i2s->sysclk_div)) + return dev_err_probe(i2s->dev, PTR_ERR(i2s->sysclk_div), + "failed to enable sysclk_div clock\n"); + + i2s->c_sysclk =3D devm_clk_get_optional_enabled(i2s->dev, "c_sysclk"); + if (IS_ERR(i2s->c_sysclk)) + return dev_err_probe(i2s->dev, PTR_ERR(i2s->c_sysclk), + "failed to enable c_sysclk clock\n"); + + i2s->c_bclk =3D devm_clk_get_optional_enabled(i2s->dev, "c_bclk"); + if (IS_ERR(i2s->c_bclk)) + return dev_err_probe(i2s->dev, PTR_ERR(i2s->c_bclk), + "failed to enable c_bclk clock\n"); + i2s->base =3D devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(i2s->base)) return dev_err_probe(i2s->dev, PTR_ERR(i2s->base), "failed to map regist= ers\n"); @@ -444,6 +477,7 @@ static int spacemit_i2s_probe(struct platform_device *p= dev) =20 static const struct of_device_id spacemit_i2s_of_match[] =3D { { .compatible =3D "spacemit,k1-i2s", }, + { .compatible =3D "spacemit,k3-i2s", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, spacemit_i2s_of_match); @@ -458,4 +492,4 @@ static struct platform_driver spacemit_i2s_driver =3D { module_platform_driver(spacemit_i2s_driver); =20 MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("I2S bus driver for SpacemiT K1 SoC"); +MODULE_DESCRIPTION("I2S bus driver for SpacemiT K1/K3 SoC"); --=20 2.54.0