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charset="utf-8" J722S uses the C7xv DSP based deep learning engine similar to AM62A, but the reset and module enable integration in the SoC is little different. It does not have local reset from power state controller. So, add a new compatible string to distinguish this difference. Signed-off-by: Hari Nagalla Reviewed-by: Devarsh Thakkar --- .../devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.y= aml b/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml index b51bb863d759..c241d88f640b 100644 --- a/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml +++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml @@ -29,11 +29,13 @@ properties: compatible: enum: - ti,am62a-c7xv-dsp + - ti,j722s-c7xv-dsp - ti,j721e-c66-dsp - ti,j721e-c71-dsp - ti,j721s2-c71-dsp description: Use "ti,am62a-c7xv-dsp" for AM62A Deep learning DSPs on K3 AM62A SoCs + Use "ti,j722s-c7xv-dsp" for J722S Deep learning DSPs on K3 J722S SoCs Use "ti,j721e-c66-dsp" for C66x DSPs on K3 J721E SoCs Use "ti,j721e-c71-dsp" for C71x DSPs on K3 J721E SoCs Use "ti,j721s2-c71-dsp" for C71x DSPs on K3 J721S2 SoCs @@ -127,6 +129,7 @@ allOf: compatible: enum: - ti,am62a-c7xv-dsp + - ti,j722s-c7xv-dsp then: properties: reg: --=20 2.34.1 From nobody Thu Apr 2 20:22:03 2026 Received: from PH8PR06CU001.outbound.protection.outlook.com (mail-westus3azon11012045.outbound.protection.outlook.com [40.107.209.45]) (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 8619425776; 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charset="utf-8" update the compatible string for C7XV deep learning DSP core in J722S. Signed-off-by: Hari Nagalla --- arch/arm64/boot/dts/ti/k3-j722s-main.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi b/arch/arm64/boot/dt= s/ti/k3-j722s-main.dtsi index 9ee5d0c8ffd1..0a746ede01dd 100644 --- a/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi @@ -373,7 +373,7 @@ main_r5fss0_core0: r5f@78400000 { }; =20 c7x_0: dsp@7e000000 { - compatible =3D "ti,am62a-c7xv-dsp"; + compatible =3D "ti,j722s-c7xv-dsp"; reg =3D <0x00 0x7e000000 0x00 0x00200000>; reg-names =3D "l2sram"; resets =3D <&k3_reset 208 1>; @@ -385,7 +385,7 @@ c7x_0: dsp@7e000000 { }; =20 c7x_1: dsp@7e200000 { - compatible =3D "ti,am62a-c7xv-dsp"; + compatible =3D "ti,j722s-c7xv-dsp"; reg =3D <0x00 0x7e200000 0x00 0x00200000>; reg-names =3D "l2sram"; resets =3D <&k3_reset 268 1>; --=20 2.34.1 From nobody Thu Apr 2 20:22:03 2026 Received: from CH5PR02CU005.outbound.protection.outlook.com (mail-northcentralusazon11012058.outbound.protection.outlook.com [40.107.200.58]) (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 E15073BB4A; 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Thu, 12 Feb 2026 18:12:17 -0600 Received: from DFLE204.ent.ti.com (10.64.6.62) by DFLE207.ent.ti.com (10.64.6.65) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Thu, 12 Feb 2026 18:12:16 -0600 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DFLE204.ent.ti.com (10.64.6.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Thu, 12 Feb 2026 18:12:16 -0600 Received: from localhost ([10.249.48.175]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 61D0CGco3962077; Thu, 12 Feb 2026 18:12:16 -0600 From: Hari Nagalla To: , , , , , CC: , , , , , , , , Hari Nagalla Subject: [PATCH 3/4] remoteproc: k3-dsp: use local reset for C7XV dsps on AM62A Date: Thu, 12 Feb 2026 18:11:50 -0600 Message-ID: <20260213001151.17370-4-hnagalla@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260213001151.17370-1-hnagalla@ti.com> References: <20260213001151.17370-1-hnagalla@ti.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000A349:EE_|DM6PR10MB4363:EE_ X-MS-Office365-Filtering-Correlation-Id: bb28339d-573d-444a-fb3e-08de6a948e9e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|7416014|376014; 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charset="utf-8" The C7XV deep learning engine dsp core in AM62A has a local reset line from power state controller. In the absence of using the local reset, it is in an unknown state and when the module is turned on, CPU starts executing and may go into a bad state. Set local reset to 'true' for AM62A, so that the remote proc driver properly asserts the local reset before enabling the module to load the firmware. And it is deasserted after firmware load is complete to start the core. Signed-off-by: Hari Nagalla --- drivers/remoteproc/ti_k3_dsp_remoteproc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc= /ti_k3_dsp_remoteproc.c index d6ceea6dc920..7881c711d872 100644 --- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c +++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c @@ -211,7 +211,7 @@ static const struct k3_rproc_dev_data c7xv_data =3D { .mems =3D c7xv_mems, .num_mems =3D ARRAY_SIZE(c7xv_mems), .boot_align_addr =3D SZ_2M, - .uses_lreset =3D false, + .uses_lreset =3D true, }; =20 static const struct of_device_id k3_dsp_of_match[] =3D { --=20 2.34.1 From nobody Thu Apr 2 20:22:03 2026 Received: from DM5PR21CU001.outbound.protection.outlook.com (mail-centralusazon11011022.outbound.protection.outlook.com [52.101.62.22]) (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 3B2AB27442; Fri, 13 Feb 2026 00:12:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" J722S uses the C7XV DSP based deep learning engine similar to AM62A, but the reset and module enable integration in the SoC is little different. It does not have a local reset from power state controller. So, add a new compatible string to distinguish this difference. For these DSP core variants 'prepare' operation is not needed before loading the firmware. The module level main reset is released during 'start' operation, i.e after firmware load. Signed-off-by: Hari Nagalla --- drivers/remoteproc/ti_k3_dsp_remoteproc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc= /ti_k3_dsp_remoteproc.c index 7881c711d872..301d7b5afd2f 100644 --- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c +++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c @@ -214,11 +214,19 @@ static const struct k3_rproc_dev_data c7xv_data =3D { .uses_lreset =3D true, }; =20 +static const struct k3_rproc_dev_data j722s_c7xv_data =3D { + .mems =3D c7xv_mems, + .num_mems =3D ARRAY_SIZE(c7xv_mems), + .boot_align_addr =3D SZ_2M, + .uses_lreset =3D false, +}; + static const struct of_device_id k3_dsp_of_match[] =3D { { .compatible =3D "ti,j721e-c66-dsp", .data =3D &c66_data, }, { .compatible =3D "ti,j721e-c71-dsp", .data =3D &c71_data, }, { .compatible =3D "ti,j721s2-c71-dsp", .data =3D &c71_data, }, { .compatible =3D "ti,am62a-c7xv-dsp", .data =3D &c7xv_data, }, + { .compatible =3D "ti,j722s-c7xv-dsp", .data =3D &j722s_c7xv_data, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, k3_dsp_of_match); --=20 2.34.1