Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752353AbdGXCiN (ORCPT ); Sun, 23 Jul 2017 22:38:13 -0400 Received: from regular1.263xmail.com ([211.150.99.138]:50100 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751943AbdGXCiG (ORCPT ); Sun, 23 Jul 2017 22:38:06 -0400 X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-RL-SENDER: xxm@rock-chips.com X-FST-TO: joro@8bytes.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: xxm@rock-chips.com X-UNIQUE-TAG: <899fe235dce926cf015c549f742ece3f> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Simon Xue To: Joerg Roedel , Heiko Stuebner Cc: linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Simon Xue Subject: [PATCH V3 1/3] Docs: dt: rockchip: add rockchip,disable-mmu-reset property Date: Mon, 24 Jul 2017 10:37:13 +0800 Message-Id: <1500863835-32877-1-git-send-email-xxm@rock-chips.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1040 Lines: 30 Add rockchip,disable-mmu-reset property to disable some mmu reset operation Signed-off-by: Simon Xue --- changes since V2: use rockchip,disable-mmu-reset instead of rk-iommu,disable-reset-quirk Documentation/devicetree/bindings/iommu/rockchip,iommu.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt index 9a55ac3..2098f77 100644 --- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt +++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt @@ -15,6 +15,11 @@ Required properties: to associate with its master device. See: Documentation/devicetree/bindings/iommu/iommu.txt +Optional properties: +- rockchip,disable-mmu-reset : Don't use the mmu reset operation. + Some mmu instances may produce unexpected results + when the reset operation is used. + Example: vopl_mmu: iommu@ff940300 { -- 1.9.1