Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751604AbdHNOKB (ORCPT ); Mon, 14 Aug 2017 10:10:01 -0400 Received: from smtprelay.synopsys.com ([198.182.60.111]:50246 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751098AbdHNOJ7 (ORCPT ); Mon, 14 Aug 2017 10:09:59 -0400 From: Eugeniy Paltsev To: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Vineet Gupta , Alexey Brodkin , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, Eugeniy Paltsev Subject: [PATCH v2] ARC: HSDK: Add reset controller node to manage ethernet reset Date: Mon, 14 Aug 2017 17:09:53 +0300 Message-Id: <20170814140953.7729-1-Eugeniy.Paltsev@synopsys.com> X-Mailer: git-send-email 2.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1599 Lines: 60 DW ethernet controller on HSDK hangs sometimes after SW reset, so add reset node to make possible to reset DW ethernet controller HW. Signed-off-by: Eugeniy Paltsev --- Changes v1 -> v2: * Enable HSDK reset driver in hsdk_defconfig arch/arc/boot/dts/hsdk.dts | 9 +++++++++ arch/arc/configs/hsdk_defconfig | 1 + 2 files changed, 10 insertions(+) diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts index e096879..84052db 100644 --- a/arch/arc/boot/dts/hsdk.dts +++ b/arch/arc/boot/dts/hsdk.dts @@ -12,6 +12,7 @@ /dts-v1/; #include +#include / { model = "snps,hsdk"; @@ -102,6 +103,12 @@ ranges = <0x00000000 0xf0000000 0x10000000>; + cgu_rst: reset { + compatible = "snps,hsdk-v1.0-reset"; + #reset-cells = <1>; + reg = <0x8A0 0x4>, <0xFF0 0x4>; + }; + serial: serial@5000 { compatible = "snps,dw-apb-uart"; reg = <0x5000 0x100>; @@ -141,6 +148,8 @@ clocks = <&gmacclk>; clock-names = "stmmaceth"; phy-handle = <&phy0>; + resets = <&cgu_rst HSDK_V1_ETH_RESET>; + reset-names = "stmmaceth"; mdio { #address-cells = <1>; diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig index f4190bc..f7fd8c4 100644 --- a/arch/arc/configs/hsdk_defconfig +++ b/arch/arc/configs/hsdk_defconfig @@ -61,6 +61,7 @@ CONFIG_MMC_SDHCI=y CONFIG_MMC_SDHCI_PLTFM=y CONFIG_MMC_DW=y # CONFIG_IOMMU_SUPPORT is not set +CONFIG_RESET_HSDK_V1=y CONFIG_EXT3_FS=y CONFIG_VFAT_FS=y CONFIG_TMPFS=y -- 2.9.3