From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932381AbeEWJ4r (ORCPT ); Wed, 23 May 2018 05:56:47 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:36615 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932315AbeEWJ4h (ORCPT ); Wed, 23 May 2018 05:56:37 -0400 X-Google-Smtp-Source: AB8JxZr9UMFZ5vyadxrsxjxE941czDTYtpSicvEIS4hZx08aaOt295qEu8dsZgoqKByl1o8U15UExw== From: Esben Haabendal To: linux-i2c@vger.kernel.org Cc: Esben Haabendal , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/4] arm: dts: ls1021a: Enable I2C DMA support Date: Wed, 23 May 2018 11:56:23 +0200 Message-Id: <20180523095623.3347-5-esben.haabendal@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180523095623.3347-1-esben.haabendal@gmail.com> References: <20180523095623.3347-1-esben.haabendal@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Esben Haabendal Gives substantial performance improvement for transfers larger than 16 bytes (DMA_THRESHOLD). Smaller transfers are unaffected. Signed-off-by: Esben Haabendal --- arch/arm/boot/dts/ls1021a.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi index c55d479971cc..1e5640701c65 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -363,6 +363,8 @@ interrupts = ; clock-names = "i2c"; clocks = <&clockgen 4 1>; + dma-names = "tx", "rx"; + dmas = <&edma0 1 39>, <&edma0 1 38>; status = "disabled"; }; @@ -374,6 +376,8 @@ interrupts = ; clock-names = "i2c"; clocks = <&clockgen 4 1>; + dma-names = "tx", "rx"; + dmas = <&edma0 1 37>, <&edma0 1 36>; status = "disabled"; }; @@ -385,6 +389,8 @@ interrupts = ; clock-names = "i2c"; clocks = <&clockgen 4 1>; + dma-names = "tx", "rx"; + dmas = <&edma0 1 35>, <&edma0 1 34>; status = "disabled"; }; -- 2.17.0