From mboxrd@z Thu Jan 1 00:00:00 1970 From: niklas.cassel@axis.com (Niklas Cassel) Date: Tue, 20 Feb 2018 18:00:42 +0100 Subject: [PATCH 1/8] ARM: dts: artpec: disable Accelerator Coherency Port In-Reply-To: <20180220170049.22809-1-niklas.cassel@axis.com> References: <20180220170049.22809-1-niklas.cassel@axis.com> Message-ID: <20180220170049.22809-2-niklas.cassel@axis.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Accesses via 0x80000000 go through the ACP instead of using the DDR directly. Unfortunately the ACP has proven to be the cause of complete system hangs. Disabling the ACP makes these problems go away. Signed-off-by: Niklas Cassel --- arch/arm/boot/dts/artpec6.dtsi | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/artpec6.dtsi b/arch/arm/boot/dts/artpec6.dtsi index 2ed11773048d..d9776a97d8ff 100644 --- a/arch/arm/boot/dts/artpec6.dtsi +++ b/arch/arm/boot/dts/artpec6.dtsi @@ -185,8 +185,7 @@ #address-cells = <0x1>; #size-cells = <0x1>; ranges; - dma-ranges = <0x80000000 0x00000000 0x40000000>; - dma-coherent; + dma-ranges; ethernet: ethernet at f8010000 { clock-names = "phy_ref_clk", "apb_pclk"; -- 2.14.2 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Niklas Cassel Subject: [PATCH 1/8] ARM: dts: artpec: disable Accelerator Coherency Port Date: Tue, 20 Feb 2018 18:00:42 +0100 Message-ID: <20180220170049.22809-2-niklas.cassel@axis.com> References: <20180220170049.22809-1-niklas.cassel@axis.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180220170049.22809-1-niklas.cassel@axis.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: arm@kernel.org, Jesper Nilsson , Lars Persson , Niklas Cassel , Rob Herring , Mark Rutland , Russell King Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-kernel@axis.com, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org Accesses via 0x80000000 go through the ACP instead of using the DDR directly. Unfortunately the ACP has proven to be the cause of complete system hangs. Disabling the ACP makes these problems go away. Signed-off-by: Niklas Cassel --- arch/arm/boot/dts/artpec6.dtsi | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/artpec6.dtsi b/arch/arm/boot/dts/artpec6.dtsi index 2ed11773048d..d9776a97d8ff 100644 --- a/arch/arm/boot/dts/artpec6.dtsi +++ b/arch/arm/boot/dts/artpec6.dtsi @@ -185,8 +185,7 @@ #address-cells = <0x1>; #size-cells = <0x1>; ranges; - dma-ranges = <0x80000000 0x00000000 0x40000000>; - dma-coherent; + dma-ranges; ethernet: ethernet@f8010000 { clock-names = "phy_ref_clk", "apb_pclk"; -- 2.14.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753288AbeBTRBZ (ORCPT ); Tue, 20 Feb 2018 12:01:25 -0500 Received: from bastet.se.axis.com ([195.60.68.11]:33926 "EHLO bastet.se.axis.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752194AbeBTRBW (ORCPT ); Tue, 20 Feb 2018 12:01:22 -0500 From: Niklas Cassel To: arm@kernel.org, Jesper Nilsson , Lars Persson , Niklas Cassel , Rob Herring , Mark Rutland , Russell King Cc: linux-arm-kernel@axis.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/8] ARM: dts: artpec: disable Accelerator Coherency Port Date: Tue, 20 Feb 2018 18:00:42 +0100 Message-Id: <20180220170049.22809-2-niklas.cassel@axis.com> X-Mailer: git-send-email 2.14.2 In-Reply-To: <20180220170049.22809-1-niklas.cassel@axis.com> References: <20180220170049.22809-1-niklas.cassel@axis.com> X-TM-AS-GCONF: 00 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Accesses via 0x80000000 go through the ACP instead of using the DDR directly. Unfortunately the ACP has proven to be the cause of complete system hangs. Disabling the ACP makes these problems go away. Signed-off-by: Niklas Cassel --- arch/arm/boot/dts/artpec6.dtsi | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/artpec6.dtsi b/arch/arm/boot/dts/artpec6.dtsi index 2ed11773048d..d9776a97d8ff 100644 --- a/arch/arm/boot/dts/artpec6.dtsi +++ b/arch/arm/boot/dts/artpec6.dtsi @@ -185,8 +185,7 @@ #address-cells = <0x1>; #size-cells = <0x1>; ranges; - dma-ranges = <0x80000000 0x00000000 0x40000000>; - dma-coherent; + dma-ranges; ethernet: ethernet@f8010000 { clock-names = "phy_ref_clk", "apb_pclk"; -- 2.14.2