From nobody Wed Dec 17 17:25:05 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 736E1C636CB for ; Fri, 24 Nov 2023 04:58:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231270AbjKXE6F (ORCPT ); Thu, 23 Nov 2023 23:58:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231127AbjKXE6A (ORCPT ); Thu, 23 Nov 2023 23:58:00 -0500 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 776CED6F; Thu, 23 Nov 2023 20:58:06 -0800 (PST) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 3AO4w08f043213; Thu, 23 Nov 2023 22:58:00 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1700801880; bh=Nr4yvQ63vzpR8jqHfgCSy9Z4F3QZkyPd0SgK2o1Puek=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=gmaFe0vkxa1e98/bnamHh/Mf3otRudVdOxqh89ystSFq0MIb080N6ji9Dw1AoSVNJ jwl8Ol32lS3W3YjJZUFTGAHMNIyMsaUBgGFg1HLkPrA8Ql5OsodY3FCuDUCux2INhI HTl/6Jup/xBjjZs6d+i74HsBr+G3449DctnXZ//Y= Received: from DLEE114.ent.ti.com (dlee114.ent.ti.com [157.170.170.25]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 3AO4w0Ps080884 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 23 Nov 2023 22:58:00 -0600 Received: from DLEE102.ent.ti.com (157.170.170.32) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Thu, 23 Nov 2023 22:58:00 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE102.ent.ti.com (157.170.170.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Thu, 23 Nov 2023 22:58:00 -0600 Received: from uda0132425.dhcp.ti.com (ileaxei01-snat2.itg.ti.com [10.180.69.6]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 3AO4vo8h004756; Thu, 23 Nov 2023 22:57:57 -0600 From: Vignesh Raghavendra To: Peter Ujfalusi , Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , Vignesh Raghavendra , Subject: [PATCH v3 2/4] dt-bindings: dma: ti: k3-bcdma: Describe cfg register regions Date: Fri, 24 Nov 2023 10:27:20 +0530 Message-ID: <20231124045722.191817-3-vigneshr@ti.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231124045722.191817-1-vigneshr@ti.com> References: <20231124045722.191817-1-vigneshr@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Block copy DMA(BCDMA)module on K3 SoCs have ring, BCHAN, TX and RX channel cfg register regions which are usually configured by a Device Management firmware. But certain entities such as bootloader (like U-Boot) may have to access them directly. Describe this region in the binding documentation for completeness of module description. Keep the binding compatible with existing DTS files by requiring first five regions to be present at least. Signed-off-by: Vignesh Raghavendra Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/dma/ti/k3-bcdma.yaml | 23 +++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml b/Docum= entation/devicetree/bindings/dma/ti/k3-bcdma.yaml index 11727af9df73..27b8e1636560 100644 --- a/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml +++ b/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml @@ -37,11 +37,11 @@ properties: =20 reg: minItems: 3 - maxItems: 5 + maxItems: 9 =20 reg-names: minItems: 3 - maxItems: 5 + maxItems: 9 =20 "#dma-cells": const: 3 @@ -163,20 +163,30 @@ allOf: then: properties: reg: + minItems: 5 items: - description: BCDMA Control /Status Registers region - description: Block Copy Channel Realtime Registers region - description: RX Channel Realtime Registers region - description: TX Channel Realtime Registers region - description: Ring Realtime Registers region + - description: Ring Configuration Registers region + - description: TX Channel Configuration Registers region + - description: RX Channel Configuration Registers region + - description: Block Copy Channel Configuration Registers regi= on =20 reg-names: + minItems: 5 items: - const: gcfg - const: bchanrt - const: rchanrt - const: tchanrt - const: ringrt + - const: ring + - const: tchan + - const: rchan + - const: bchan =20 required: - ti,sci-rm-range-bchan @@ -232,8 +242,13 @@ examples: <0x0 0x4c000000 0x0 0x20000>, <0x0 0x4a820000 0x0 0x20000>, <0x0 0x4aa40000 0x0 0x20000>, - <0x0 0x4bc00000 0x0 0x100000>; - reg-names =3D "gcfg", "bchanrt", "rchanrt", "tchanrt", "ri= ngrt"; + <0x0 0x4bc00000 0x0 0x100000>, + <0x0 0x48600000 0x0 0x8000>, + <0x0 0x484a4000 0x0 0x2000>, + <0x0 0x484c2000 0x0 0x2000>, + <0x0 0x48420000 0x0 0x2000>; + reg-names =3D "gcfg", "bchanrt", "rchanrt", "tchanrt", "ri= ngrt", + "ring", "tchan", "rchan", "bchan"; msi-parent =3D <&inta_main_dmss>; #dma-cells =3D <3>; =20 --=20 2.43.0