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Remove 'slave_id' from fsl_edma_chan to eliminate redundancy. Signed-off-by: Frank Li --- drivers/dma/fsl-edma-common.h | 1 - drivers/dma/fsl-edma-main.c | 10 +++++----- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index 7bf0aba471a8c..4cf1de9f0e512 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -151,7 +151,6 @@ struct fsl_edma_chan { enum dma_status status; enum fsl_edma_pm_state pm_state; bool idle; - u32 slave_id; struct fsl_edma_engine *edma; struct fsl_edma_desc *edesc; struct dma_slave_config cfg; diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 402f0058a180c..0a6e0c4040274 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -114,8 +114,8 @@ static struct dma_chan *fsl_edma_xlate(struct of_phandl= e_args *dma_spec, if (chan) { chan->device->privatecnt++; fsl_chan =3D to_fsl_edma_chan(chan); - fsl_chan->slave_id =3D dma_spec->args[1]; - fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id, + fsl_chan->srcid =3D dma_spec->args[1]; + fsl_edma_chan_mux(fsl_chan, fsl_chan->srcid, true); mutex_unlock(&fsl_edma->fsl_edma_mutex); return chan; @@ -540,7 +540,7 @@ static int fsl_edma_probe(struct platform_device *pdev) =20 fsl_chan->edma =3D fsl_edma; fsl_chan->pm_state =3D RUNNING; - fsl_chan->slave_id =3D 0; + fsl_chan->srcid =3D 0; fsl_chan->idle =3D true; fsl_chan->dma_dir =3D DMA_NONE; fsl_chan->vchan.desc_free =3D fsl_edma_free_desc; @@ -682,8 +682,8 @@ static int fsl_edma_resume_early(struct device *dev) continue; fsl_chan->pm_state =3D RUNNING; edma_write_tcdreg(fsl_chan, 0, csr); - if (fsl_chan->slave_id !=3D 0) - fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id, true); + if (fsl_chan->srcid !=3D 0) + fsl_edma_chan_mux(fsl_chan, fsl_chan->srcid, true); } =20 if (!(fsl_edma->drvdata->flags & FSL_EDMA_DRV_SPLIT_REG)) --=20 2.34.1 From nobody Sun Feb 8 09:37:31 2026 Received: from EUR04-DB3-obe.outbound.protection.outlook.com (mail-db3eur04on2055.outbound.protection.outlook.com [40.107.6.55]) (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 0768614EFF3; 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Signed-off-by: Frank Li --- drivers/dma/fsl-edma-main.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 0a6e0c4040274..2148a7f1ae843 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -115,6 +115,13 @@ static struct dma_chan *fsl_edma_xlate(struct of_phand= le_args *dma_spec, chan->device->privatecnt++; fsl_chan =3D to_fsl_edma_chan(chan); fsl_chan->srcid =3D dma_spec->args[1]; + + if (!fsl_chan->srcid) { + dev_err(&fsl_chan->pdev->dev, "Invalidate srcid %d\n", + fsl_chan->srcid); + return NULL; + } + fsl_edma_chan_mux(fsl_chan, fsl_chan->srcid, true); mutex_unlock(&fsl_edma->fsl_edma_mutex); --=20 2.34.1 From nobody Sun Feb 8 09:37:31 2026 Received: from EUR04-DB3-obe.outbound.protection.outlook.com (mail-db3eur04on2055.outbound.protection.outlook.com [40.107.6.55]) (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 1E07814EFEC; 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Removes these unused features. Signed-off-by: Frank Li --- drivers/dma/fsl-edma-common.h | 2 -- drivers/dma/fsl-edma-main.c | 8 -------- 2 files changed, 10 deletions(-) diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index 4cf1de9f0e512..532f647e540e7 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -192,7 +192,6 @@ struct fsl_edma_desc { #define FSL_EDMA_DRV_WRAP_IO BIT(3) #define FSL_EDMA_DRV_EDMA64 BIT(4) #define FSL_EDMA_DRV_HAS_PD BIT(5) -#define FSL_EDMA_DRV_HAS_CHCLK BIT(6) #define FSL_EDMA_DRV_HAS_CHMUX BIT(7) /* imx8 QM audio edma remote local swapped */ #define FSL_EDMA_DRV_QUIRK_SWAPPED BIT(8) @@ -237,7 +236,6 @@ struct fsl_edma_engine { void __iomem *muxbase[DMAMUX_NR]; struct clk *muxclk[DMAMUX_NR]; struct clk *dmaclk; - struct clk *chclk; struct mutex fsl_edma_mutex; const struct fsl_edma_drvdata *drvdata; u32 n_chans; diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 2148a7f1ae843..41c71c360ff1f 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -483,14 +483,6 @@ static int fsl_edma_probe(struct platform_device *pdev) } } =20 - if (drvdata->flags & FSL_EDMA_DRV_HAS_CHCLK) { - fsl_edma->chclk =3D devm_clk_get_enabled(&pdev->dev, "mp"); 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Tue, 27 Feb 2024 17:22:23 +0000 From: Frank Li Date: Tue, 27 Feb 2024 12:21:56 -0500 Subject: [PATCH 4/5] dt-bindings: fsl-dma: fsl-edma: add fsl,imx8ulp-edma compatible string Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240227-8ulp_edma-v1-4-7fcfe1e265c2@nxp.com> References: <20240227-8ulp_edma-v1-0-7fcfe1e265c2@nxp.com> In-Reply-To: <20240227-8ulp_edma-v1-0-7fcfe1e265c2@nxp.com> To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Peng Fan Cc: imx@lists.linux.dev, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Frank Li , Joy Zou X-Mailer: b4 0.13-dev-c87ef X-Developer-Signature: v=1; a=ed25519-sha256; t=1709054529; l=1639; i=Frank.Li@nxp.com; s=20240130; h=from:subject:message-id; bh=/ayZNWifeByzbocFCHfeq4diylFnWb7v4U7hUf6Aoow=; b=BeBV2TBdB/ZN36u9SjL4QlUf3wgv1+9fwfA4+f2hbGk9Xly2LOj6pcKIus5oB+mr6C/TMdJ3n SUsy3I/RpASDaKDXnoBLfToJA+r4u7yECksv4xgkfqhfEnnevyL+FiZ X-Developer-Key: i=Frank.Li@nxp.com; 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Signed-off-by: Joy Zou Reviewed-by: Frank Li --- .../devicetree/bindings/dma/fsl,edma.yaml | 24 ++++++++++++++++++= ++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Document= ation/devicetree/bindings/dma/fsl,edma.yaml index aa51d278cb67b..6c04303dbe453 100644 --- a/Documentation/devicetree/bindings/dma/fsl,edma.yaml +++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml @@ -23,6 +23,7 @@ properties: - fsl,imx7ulp-edma - fsl,imx8qm-adma - fsl,imx8qm-edma + - fsl,imx8ulp-edma - fsl,imx93-edma3 - fsl,imx93-edma4 - fsl,imx95-edma5 @@ -53,11 +54,11 @@ properties: =20 clocks: minItems: 1 - maxItems: 2 + maxItems: 33 =20 clock-names: minItems: 1 - maxItems: 2 + maxItems: 33 =20 big-endian: description: | @@ -151,6 +152,25 @@ allOf: dma-channels: const: 32 =20 + - if: + properties: + compatible: + contains: + const: fsl,imx8ulp-edma + then: + properties: + clock: + maxItems: 33 + clock-names: + items: + - const: dma + - pattern: "^CH[0-31]-clk$" + interrupt-names: false + interrupts: + maxItems: 32 + "#dma-cells": + const: 3 + unevaluatedProperties: false =20 examples: --=20 2.34.1 From nobody Sun Feb 8 09:37:31 2026 Received: from EUR04-DB3-obe.outbound.protection.outlook.com (mail-db3eur04on2055.outbound.protection.outlook.com [40.107.6.55]) (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 2097B14F996; 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Introduce the use of the correct FSL_EDMA_DRV_HAS_CHCLK flag to handle per-channel clock configurations. Signed-off-by: Joy Zou Reviewed-by: Frank Li --- drivers/dma/fsl-edma-common.c | 6 ++++++ drivers/dma/fsl-edma-common.h | 1 + drivers/dma/fsl-edma-main.c | 22 ++++++++++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index b18faa7cfedb9..f9144b0154396 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -3,6 +3,7 @@ // Copyright (c) 2013-2014 Freescale Semiconductor, Inc // Copyright (c) 2017 Sysam, Angelo Dureghello =20 +#include #include #include #include @@ -810,6 +811,9 @@ int fsl_edma_alloc_chan_resources(struct dma_chan *chan) { struct fsl_edma_chan *fsl_chan =3D to_fsl_edma_chan(chan); =20 + if (fsl_edma_drvflags(fsl_chan) & FSL_EDMA_DRV_HAS_CHCLK) + clk_prepare_enable(fsl_chan->clk); + fsl_chan->tcd_pool =3D dma_pool_create("tcd_pool", chan->device->dev, fsl_edma_drvflags(fsl_chan) & FSL_EDMA_DRV_TCD64 ? sizeof(struct fsl_edma_hw_tcd64) : sizeof(struct fsl_edma_hw_tcd), @@ -838,6 +842,8 @@ void fsl_edma_free_chan_resources(struct dma_chan *chan) fsl_chan->tcd_pool =3D NULL; fsl_chan->is_sw =3D false; fsl_chan->srcid =3D 0; + if (fsl_edma_drvflags(fsl_chan) & FSL_EDMA_DRV_HAS_CHCLK) + clk_disable_unprepare(fsl_chan->clk); } =20 void fsl_edma_cleanup_vchan(struct dma_device *dmadev) diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index 532f647e540e7..01157912bfd5f 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -192,6 +192,7 @@ struct fsl_edma_desc { #define FSL_EDMA_DRV_WRAP_IO BIT(3) #define FSL_EDMA_DRV_EDMA64 BIT(4) #define FSL_EDMA_DRV_HAS_PD BIT(5) +#define FSL_EDMA_DRV_HAS_CHCLK BIT(6) #define FSL_EDMA_DRV_HAS_CHMUX BIT(7) /* imx8 QM audio edma remote local swapped */ #define FSL_EDMA_DRV_QUIRK_SWAPPED BIT(8) diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 41c71c360ff1f..0837535aa7548 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -356,6 +356,16 @@ static struct fsl_edma_drvdata imx8qm_audio_data =3D { .setup_irq =3D fsl_edma3_irq_init, }; =20 +static struct fsl_edma_drvdata imx8ulp_data =3D { + .flags =3D FSL_EDMA_DRV_HAS_CHMUX | FSL_EDMA_DRV_HAS_CHCLK | FSL_EDMA_DRV= _HAS_DMACLK | + FSL_EDMA_DRV_EDMA3, + .chreg_space_sz =3D 0x10000, + .chreg_off =3D 0x10000, + .mux_off =3D 0x10000 + offsetof(struct fsl_edma3_ch_reg, ch_mux), + .mux_skip =3D 0x10000, + .setup_irq =3D fsl_edma3_irq_init, +}; + static struct fsl_edma_drvdata imx93_data3 =3D { .flags =3D FSL_EDMA_DRV_HAS_DMACLK | FSL_EDMA_DRV_EDMA3, .chreg_space_sz =3D 0x10000, @@ -388,6 +398,7 @@ static const struct of_device_id fsl_edma_dt_ids[] =3D { { .compatible =3D "fsl,imx7ulp-edma", .data =3D &imx7ulp_data}, { .compatible =3D "fsl,imx8qm-edma", .data =3D &imx8qm_data}, { .compatible =3D "fsl,imx8qm-adma", .data =3D &imx8qm_audio_data}, + { .compatible =3D "fsl,imx8ulp-edma", .data =3D &imx8ulp_data}, { .compatible =3D "fsl,imx93-edma3", .data =3D &imx93_data3}, { .compatible =3D "fsl,imx93-edma4", .data =3D &imx93_data4}, { .compatible =3D "fsl,imx95-edma5", .data =3D &imx95_data5}, @@ -441,6 +452,7 @@ static int fsl_edma_probe(struct platform_device *pdev) struct fsl_edma_engine *fsl_edma; const struct fsl_edma_drvdata *drvdata =3D NULL; u32 chan_mask[2] =3D {0, 0}; + char clk_name[36]; struct edma_regs *regs; int chans; int ret, i; @@ -550,11 +562,21 @@ static int fsl_edma_probe(struct platform_device *pde= v) + i * drvdata->chreg_space_sz + drvdata->chreg_off + len; fsl_chan->mux_addr =3D fsl_edma->membase + drvdata->mux_off + i * drvdat= a->mux_skip; =20 + if (drvdata->flags & FSL_EDMA_DRV_HAS_CHCLK) { + snprintf(clk_name, sizeof(clk_name), "CH%02d-clk", i); + fsl_chan->clk =3D devm_clk_get_enabled(&pdev->dev, + (const char *)clk_name); + + if (IS_ERR(fsl_chan->clk)) + return PTR_ERR(fsl_chan->clk); + } fsl_chan->pdev =3D pdev; vchan_init(&fsl_chan->vchan, &fsl_edma->dma_dev); =20 edma_write_tcdreg(fsl_chan, cpu_to_le32(0), csr); fsl_edma_chan_mux(fsl_chan, 0, false); + if (fsl_chan->edma->drvdata->flags & FSL_EDMA_DRV_HAS_CHCLK) + clk_disable_unprepare(fsl_chan->clk); } =20 ret =3D fsl_edma->drvdata->setup_irq(pdev, fsl_edma); --=20 2.34.1