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Signed-off-by: Daniel Baluta Reviewed-by: Frank Li Acked-by: Rob Herring (Arm) --- include/dt-bindings/reset/imx8mp-reset-audiomix.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 include/dt-bindings/reset/imx8mp-reset-audiomix.h diff --git a/include/dt-bindings/reset/imx8mp-reset-audiomix.h b/include/dt-bindings/reset/imx8mp-reset-audiomix.h new file mode 100644 index 000000000000..3349bf311764 --- /dev/null +++ b/include/dt-bindings/reset/imx8mp-reset-audiomix.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ +/* + * Copyright 2025 NXP + */ + +#ifndef DT_BINDING_RESET_IMX8MP_AUDIOMIX_H +#define DT_BINDING_RESET_IMX8MP_AUDIOMIX_H + +#define IMX8MP_AUDIOMIX_EARC 0 +#define IMX8MP_AUDIOMIX_EARC_PHY 1 +#define IMX8MP_AUDIOMIX_DSP 2 + +#endif /* DT_BINDING_RESET_IMX8MP_AUDIOMIX_H */ From patchwork Wed Feb 19 19:20:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Baluta X-Patchwork-Id: 13982743 Received: from AS8PR03CU001.outbound.protection.outlook.com (mail-westeuropeazon11012053.outbound.protection.outlook.com [52.101.71.53]) (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 C0EE222AE74 for ; 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This patch adds reset property which is required for i.MX8MP. Signed-off-by: Daniel Baluta Reviewed-by: Frank Li --- .../devicetree/bindings/dsp/fsl,dsp.yaml | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml index ab93ffd3d2e5..923e7f079f1b 100644 --- a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml +++ b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml @@ -82,6 +82,13 @@ properties: description: Phandle to syscon block which provide access for processor enablement + resets: + description: + A pair consisting of phandle to audio-blk-control and an index referencing + the DSP Run/Stall bit in audiomix registers. + See include/dt-bindings/reset/imx8mp-reset-audiomix.h for each index meaning. + maxItems: 1 + required: - compatible - reg @@ -164,6 +171,16 @@ allOf: - const: txdb1 - const: rxdb0 - const: rxdb1 + - if: + properties: + compatible: + contains: + enum: + - fsl,imx8mp-dsp + - fsl,imx8mp-hifi4 + then: + required: + - "resets" additionalProperties: false @@ -220,5 +237,5 @@ examples: <&mu2 3 0>; memory-region = <&dsp_vdev0buffer>, <&dsp_vdev0vring0>, <&dsp_vdev0vring1>, <&dsp_reserved>; - fsl,dsp-ctrl = <&audio_blk_ctrl>; + resets = <&audio_blk_ctrl IMX8MP_AUDIOMIX_DSP>; }; From patchwork Wed Feb 19 19:20:57 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Baluta X-Patchwork-Id: 13982744 Received: from AS8PR03CU001.outbound.protection.outlook.com (mail-westeuropeazon11012053.outbound.protection.outlook.com [52.101.71.53]) (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 DCEA822B59B for ; Wed, 19 Feb 2025 19:21:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.71.53 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739992894; cv=fail; b=tXd7S408qaaT7N22EnfjfAYsHkLR6eKZRf0KE4ZE54jJbweTprbGEVCVR7+hCVdXZJHEQDzv8eY21yBD5Pvf1x4Yde6wnkWaepoJgccCmvB+kEZs7A3wEfEl+wVPv0nrwQk2qOMT0MGY1dxOCqEDhrLJaEMTqlyHdtID2Bpp+lA= ARC-Message-Signature: i=2; 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Signed-off-by: Daniel Baluta Reviewed-by: Frank Li --- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi index e0d3b8cba221..780245d4ce61 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi @@ -6,6 +6,7 @@ #include #include #include +#include #include #include #include @@ -2421,6 +2422,7 @@ dsp: dsp@3b6e8000 { mboxes = <&mu2 2 0>, <&mu2 2 1>, <&mu2 3 0>, <&mu2 3 1>; memory-region = <&dsp_reserved>; + resets = <&audio_blk_ctrl IMX8MP_AUDIOMIX_DSP>; status = "disabled"; }; }; From patchwork Wed Feb 19 19:20:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Baluta X-Patchwork-Id: 13982745 Received: from AS8PR03CU001.outbound.protection.outlook.com (mail-westeuropeazon11012053.outbound.protection.outlook.com [52.101.71.53]) (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 46EB222CBCB for ; 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Signed-off-by: Daniel Baluta Reviewed-by: Philipp Zabel Reviewed-by: Frank Li Reviewed-by: Peng Fan --- drivers/reset/reset-imx8mp-audiomix.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c index 6e3f3069f727..1fe21980a66c 100644 --- a/drivers/reset/reset-imx8mp-audiomix.c +++ b/drivers/reset/reset-imx8mp-audiomix.c @@ -11,8 +11,8 @@ #include #include -#define EARC 0x200 -#define EARC_RESET_MASK 0x3 +#define IMX8MP_AUDIOMIX_EARC_OFFSET 0x200 +#define IMX8MP_AUDIOMIX_EARC_RESET_MASK 0x3 struct imx8mp_audiomix_reset { struct reset_controller_dev rcdev; @@ -35,8 +35,8 @@ static int imx8mp_audiomix_reset_assert(struct reset_controller_dev *rcdev, mask = BIT(id); spin_lock_irqsave(&priv->lock, flags); - reg = readl(reg_addr + EARC); - writel(reg & ~mask, reg_addr + EARC); + reg = readl(reg_addr + IMX8MP_AUDIOMIX_EARC_OFFSET); + writel(reg & ~mask, reg_addr + IMX8MP_AUDIOMIX_EARC_OFFSET); spin_unlock_irqrestore(&priv->lock, flags); return 0; @@ -52,8 +52,8 @@ static int imx8mp_audiomix_reset_deassert(struct reset_controller_dev *rcdev, mask = BIT(id); spin_lock_irqsave(&priv->lock, flags); - reg = readl(reg_addr + EARC); - writel(reg | mask, reg_addr + EARC); + reg = readl(reg_addr + IMX8MP_AUDIOMIX_EARC_OFFSET); + writel(reg | mask, reg_addr + IMX8MP_AUDIOMIX_EARC_OFFSET); spin_unlock_irqrestore(&priv->lock, flags); return 0; @@ -78,7 +78,7 @@ static int imx8mp_audiomix_reset_probe(struct auxiliary_device *adev, spin_lock_init(&priv->lock); priv->rcdev.owner = THIS_MODULE; - priv->rcdev.nr_resets = fls(EARC_RESET_MASK); + priv->rcdev.nr_resets = fls(IMX8MP_AUDIOMIX_EARC_RESET_MASK); priv->rcdev.ops = &imx8mp_audiomix_reset_ops; priv->rcdev.of_node = dev->parent->of_node; priv->rcdev.dev = dev; From patchwork Wed Feb 19 19:20:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Baluta X-Patchwork-Id: 13982746 Received: from AS8PR03CU001.outbound.protection.outlook.com (mail-westeuropeazon11012053.outbound.protection.outlook.com [52.101.71.53]) (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 632AC22CBFD for ; 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So, refactor the code in order to easily allow more reset bits in the future. Signed-off-by: Daniel Baluta Reviewed-by: Frank Li --- drivers/reset/reset-imx8mp-audiomix.c | 42 ++++++++++++++++++++------- 1 file changed, 32 insertions(+), 10 deletions(-) diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c index 1fe21980a66c..17f78ccc7820 100644 --- a/drivers/reset/reset-imx8mp-audiomix.c +++ b/drivers/reset/reset-imx8mp-audiomix.c @@ -3,6 +3,7 @@ * Copyright 2024 NXP */ +#include #include #include #include @@ -12,7 +13,24 @@ #include #define IMX8MP_AUDIOMIX_EARC_OFFSET 0x200 -#define IMX8MP_AUDIOMIX_EARC_RESET_MASK 0x3 +#define IMX8MP_AUDIOMIX_EARC_RESET_MASK BIT(1) +#define IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK BIT(2) + +struct imx8mp_reset_map { + unsigned int offset; + unsigned int mask; +}; + +static const struct imx8mp_reset_map reset_map[] = { + [IMX8MP_AUDIOMIX_EARC] = { + .offset = IMX8MP_AUDIOMIX_EARC_OFFSET, + .mask = IMX8MP_AUDIOMIX_EARC_RESET_MASK, + }, + [IMX8MP_AUDIOMIX_EARC_PHY] = { + .offset = IMX8MP_AUDIOMIX_EARC_OFFSET, + .mask = IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK, + }, +}; struct imx8mp_audiomix_reset { struct reset_controller_dev rcdev; @@ -30,13 +48,15 @@ static int imx8mp_audiomix_reset_assert(struct reset_controller_dev *rcdev, { struct imx8mp_audiomix_reset *priv = to_imx8mp_audiomix_reset(rcdev); void __iomem *reg_addr = priv->base; - unsigned int mask, reg; + unsigned int mask, offset, reg; unsigned long flags; - mask = BIT(id); + mask = reset_map[id].mask; + offset = reset_map[id].offset; + spin_lock_irqsave(&priv->lock, flags); - reg = readl(reg_addr + IMX8MP_AUDIOMIX_EARC_OFFSET); - writel(reg & ~mask, reg_addr + IMX8MP_AUDIOMIX_EARC_OFFSET); + reg = readl(reg_addr + offset); + writel(reg & ~mask, reg_addr + offset); spin_unlock_irqrestore(&priv->lock, flags); return 0; @@ -47,13 +67,15 @@ static int imx8mp_audiomix_reset_deassert(struct reset_controller_dev *rcdev, { struct imx8mp_audiomix_reset *priv = to_imx8mp_audiomix_reset(rcdev); void __iomem *reg_addr = priv->base; - unsigned int mask, reg; + unsigned int mask, offset, reg; unsigned long flags; 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Refactor assert/deassert function in order to take into account the active_low configuration option. Signed-off-by: Daniel Baluta Reviewed-by: Philipp Zabel Reviewed-by: Peng Fan Reviewed-by: Frank Li --- drivers/reset/reset-imx8mp-audiomix.c | 41 ++++++++++++++------------- 1 file changed, 22 insertions(+), 19 deletions(-) diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c index 17f78ccc7820..42539cafbccc 100644 --- a/drivers/reset/reset-imx8mp-audiomix.c +++ b/drivers/reset/reset-imx8mp-audiomix.c @@ -19,16 +19,19 @@ struct imx8mp_reset_map { unsigned int offset; unsigned int mask; + bool active_low; }; static const struct imx8mp_reset_map reset_map[] = { [IMX8MP_AUDIOMIX_EARC] = { .offset = IMX8MP_AUDIOMIX_EARC_OFFSET, .mask = IMX8MP_AUDIOMIX_EARC_RESET_MASK, + .active_low = true, }, [IMX8MP_AUDIOMIX_EARC_PHY] = { .offset = IMX8MP_AUDIOMIX_EARC_OFFSET, .mask = IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK, + .active_low = true, }, }; @@ -43,42 +46,42 @@ static struct imx8mp_audiomix_reset *to_imx8mp_audiomix_reset(struct reset_contr return container_of(rcdev, struct imx8mp_audiomix_reset, rcdev); } -static int imx8mp_audiomix_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) +static int imx8mp_audiomix_update(struct reset_controller_dev *rcdev, + unsigned long id, bool assert) { struct imx8mp_audiomix_reset *priv = to_imx8mp_audiomix_reset(rcdev); void __iomem *reg_addr = priv->base; - unsigned int mask, offset, reg; - unsigned long flags; + unsigned int mask, offset, active_low; + unsigned long reg, flags; mask = reset_map[id].mask; offset = reset_map[id].offset; + active_low = reset_map[id].active_low; spin_lock_irqsave(&priv->lock, flags); + reg = readl(reg_addr + offset); - writel(reg & ~mask, reg_addr + offset); + if (active_low ^ assert) + reg |= mask; + else + reg &= ~mask; + writel(reg, reg_addr + offset); + spin_unlock_irqrestore(&priv->lock, flags); return 0; } +static int imx8mp_audiomix_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return imx8mp_audiomix_update(rcdev, id, true); +} + static int imx8mp_audiomix_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id) { - struct imx8mp_audiomix_reset *priv = to_imx8mp_audiomix_reset(rcdev); 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Implement this functionality using the reset controller and use assert for Stall and deassert for Run. Signed-off-by: Daniel Baluta Reviewed-by: Frank Li --- drivers/reset/reset-imx8mp-audiomix.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c index 42539cafbccc..4a713b772429 100644 --- a/drivers/reset/reset-imx8mp-audiomix.c +++ b/drivers/reset/reset-imx8mp-audiomix.c @@ -16,6 +16,9 @@ #define IMX8MP_AUDIOMIX_EARC_RESET_MASK BIT(1) #define IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK BIT(2) +#define IMX8MP_AUDIOMIX_DSP_OFFSET 0x108 +#define IMX8MP_AUDIOMIX_DSP_RUNSTALL_MASK BIT(5) + struct imx8mp_reset_map { unsigned int offset; unsigned int mask; @@ -33,6 +36,11 @@ static const struct imx8mp_reset_map reset_map[] = { .mask = IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK, .active_low = true, }, + [IMX8MP_AUDIOMIX_DSP] = { + .offset = IMX8MP_AUDIOMIX_DSP_OFFSET, + .mask = IMX8MP_AUDIOMIX_DSP_RUNSTALL_MASK, + .active_low = false, + }, }; struct imx8mp_audiomix_reset { From patchwork Wed Feb 19 19:21:02 2025 Content-Type: text/plain; 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This way we can have a better control of the resources and avoid using a syscon to access the audiomix bits. Signed-off-by: Daniel Baluta Reviewed-by: Peng Fan Reviewed-by: Frank Li --- drivers/remoteproc/imx_dsp_rproc.c | 25 +++++++++++++++++-------- drivers/remoteproc/imx_rproc.h | 2 ++ 2 files changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c index ea5024919c2f..631563e4f86d 100644 --- a/drivers/remoteproc/imx_dsp_rproc.c +++ b/drivers/remoteproc/imx_dsp_rproc.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include "imx_rproc.h" @@ -111,6 +112,7 @@ enum imx_dsp_rp_mbox_messages { */ struct imx_dsp_rproc { struct regmap *regmap; + struct reset_control *reset; struct rproc *rproc; const struct imx_dsp_rproc_dcfg *dsp_dcfg; struct clk_bulk_data clks[DSP_RPROC_CLK_MAX]; @@ -192,9 +194,7 @@ static int imx8mp_dsp_reset(struct imx_dsp_rproc *priv) /* Keep reset asserted for 10 cycles */ usleep_range(1, 2); - regmap_update_bits(priv->regmap, IMX8M_AudioDSP_REG2, - IMX8M_AudioDSP_REG2_RUNSTALL, - IMX8M_AudioDSP_REG2_RUNSTALL); + reset_control_assert(priv->reset); /* Take the DSP out of reset and keep stalled for FW loading */ pwrctl = readl(dap + IMX8M_DAP_PWRCTL); @@ -231,13 +231,9 @@ static int imx8ulp_dsp_reset(struct imx_dsp_rproc *priv) /* Specific configuration for i.MX8MP */ static const struct imx_rproc_dcfg dsp_rproc_cfg_imx8mp = { - .src_reg = IMX8M_AudioDSP_REG2, - .src_mask = IMX8M_AudioDSP_REG2_RUNSTALL, - .src_start = 0, - .src_stop = IMX8M_AudioDSP_REG2_RUNSTALL, .att = imx_dsp_rproc_att_imx8mp, .att_size = ARRAY_SIZE(imx_dsp_rproc_att_imx8mp), - .method = IMX_RPROC_MMIO, + .method = IMX_RPROC_RESET_CONTROLLER, }; static const struct imx_dsp_rproc_dcfg imx_dsp_rproc_cfg_imx8mp = { @@ -329,6 +325,9 @@ static int imx_dsp_rproc_start(struct rproc *rproc) true, rproc->bootaddr); break; + case IMX_RPROC_RESET_CONTROLLER: + ret = reset_control_deassert(priv->reset); + break; default: return -EOPNOTSUPP; } @@ -369,6 +368,9 @@ static int imx_dsp_rproc_stop(struct rproc *rproc) false, rproc->bootaddr); break; + case IMX_RPROC_RESET_CONTROLLER: + ret = reset_control_assert(priv->reset); + break; default: return -EOPNOTSUPP; } @@ -995,6 +997,13 @@ static int imx_dsp_rproc_detect_mode(struct imx_dsp_rproc *priv) priv->regmap = regmap; break; + case IMX_RPROC_RESET_CONTROLLER: + priv->reset = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(priv->reset)) { + dev_err(dev, "Failed to get DSP reset control\n"); + return PTR_ERR(priv->reset); + } + break; default: ret = -EOPNOTSUPP; break; diff --git a/drivers/remoteproc/imx_rproc.h b/drivers/remoteproc/imx_rproc.h index 17a7d051c531..cfd38d37e146 100644 --- a/drivers/remoteproc/imx_rproc.h +++ b/drivers/remoteproc/imx_rproc.h @@ -24,6 +24,8 @@ enum imx_rproc_method { IMX_RPROC_SMC, /* Through System Control Unit API */ IMX_RPROC_SCU_API, + /* Through Reset Controller API */ + IMX_RPROC_RESET_CONTROLLER, }; /* dcfg flags */