From patchwork Mon Dec 6 17:42:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 12659229 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 494BCC433F5 for ; Mon, 6 Dec 2021 17:43:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245024AbhLFRqk (ORCPT ); Mon, 6 Dec 2021 12:46:40 -0500 Received: from aposti.net ([89.234.176.197]:59566 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245340AbhLFRqi (ORCPT ); Mon, 6 Dec 2021 12:46:38 -0500 From: Paul Cercueil To: Vinod Koul , Rob Herring Cc: list@opendingux.net, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, Paul Cercueil Subject: [PATCH v2 0/6] dmaengine: jz4780: Driver updates v2 Date: Mon, 6 Dec 2021 17:42:53 +0000 Message-Id: <20211206174259.68133-1-paul@crapouillou.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Hi Vinod, A small set of updates to the dma-jz4780 driver. It adds support for the MDMA/BDMA engines in the JZ4760(B) and JZ4770 SoCs, which are just regular cores with less channels. It also adds support for bidirectional channels, so that devices that only do half-duplex transfers can request a single DMA channel for both directions. Changes since V1 include: - indentation fixes in patch [1/6], - a better worded documentation in patch [2/6], - a new patch [5/6] to convert all uses of uint32_t to u32. You mentioned the fact that it would be great to have an exemple in the documentation file that uses #dma-cells = <3>. I will add one in a future patchset to the SD controller's binding documentation, when its driver will be updated to support bidirectional DMA channels. Cheers, -Paul Paul Cercueil (6): dt-bindings: dma: ingenic: Add compatible strings for MDMA and BDMA dt-bindings: dma: ingenic: Support #dma-cells = <3> dmaengine: jz4780: Work around hardware bug on JZ4760 SoCs dmaengine: jz4780: Add support for the MDMA and BDMA in the JZ4760(B) dmaengine: jz4780: Replace uint32_t with u32 dmaengine: jz4780: Support bidirectional I/O on one channel .../devicetree/bindings/dma/ingenic,dma.yaml | 42 ++++--- drivers/dma/dma-jz4780.c | 118 +++++++++++++----- 2 files changed, 113 insertions(+), 47 deletions(-)