Received: by 2002:a25:d7c1:0:0:0:0:0 with SMTP id o184csp4036816ybg; Fri, 25 Oct 2019 12:24:27 -0700 (PDT) X-Google-Smtp-Source: APXvYqxw/kmYp6i52M30rF+ucnaIPWDo47teeqUaVhGSHBQAANmdy4PacXnxy4ieUm2Jsa4F1CeT X-Received: by 2002:a17:906:b2c1:: with SMTP id cf1mr4876065ejb.155.1572031467227; Fri, 25 Oct 2019 12:24:27 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1572031467; cv=none; d=google.com; s=arc-20160816; b=gAzJp/odAn3+iVxIvjjDDbH/MNErOIR4z8PlRp6FfMKLeL209Pks1A2MISwHMeTq32 tXEzpubyA8nVUzBFR7SXM7A0+k1gsYIovVJmlmc0f6+Zv5HkuTaeSa+60e+7iGRzgiyV zIEfVx1Y1CKRF5OqCykX3SPh0wb10Yja6jLWu2V5+6svnyXhRi4XbXAmB9wjPX8pbhmG Wm4mNXwkgnJ0i5Tyb7r/p5xLEwjiwzq5AIR+DwjpbL56Gh5JJZi4dVrz/BXDEvRwwdnK CLJNoC5pabiGQzYKtaE2tMICKUB1sLfBTtbJ+IGpf+uj3oaRZ81JOyuMxLhfXtqzAwas zQLw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:message-id:date:subject:cc :to:from; bh=aIDWeC2ECWGOGA5CixseDnl6AsxjajlVXhbJ2V9HR/M=; b=mHXP9oAR7RtW/Ru90erfIbfeKfgltGEKW3ri3fIbRZw97qq1gcrtoXizkTlriDnomE DIt5QRTCfM06uPipTFnYQL2lvLhbNuh74EKfVemDm82DqdEWqHOBsrdUUZrR4S5oNCIQ ES4z8W3SWoR3Fx/SnTuS3NyXT/wL2neqWMTQcs27BcKRtnpVIzzduIQM1PJs+/b8JNp7 9oTnFEwhvpsabTYCsr4Xkj+hS383RaaCj7tBcvlNXQLjrXl2BJ32u5lIhuYCLZ9wFIkU vGmZyTF7PGVZwAxJT4aIgfc6G0uVArE7igyRAZECjk4URtrwfexGUZyJ0ebyEyQpLF4u hGgA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id gf2si1896149ejb.393.2019.10.25.12.24.03; Fri, 25 Oct 2019 12:24:27 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404629AbfJYGNL (ORCPT + 99 others); Fri, 25 Oct 2019 02:13:11 -0400 Received: from mail-sz.amlogic.com ([211.162.65.117]:39195 "EHLO mail-sz.amlogic.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404602AbfJYGNK (ORCPT ); Fri, 25 Oct 2019 02:13:10 -0400 Received: from droid12-sz.software.amlogic (10.28.8.22) by mail-sz.amlogic.com (10.28.11.5) with Microsoft SMTP Server id 15.1.1591.10; Fri, 25 Oct 2019 14:13:20 +0800 From: Xingyu Chen To: Wim Van Sebroeck , Guenter Roeck , Kevin Hilman , Neil Armstrong CC: Xingyu Chen , Rob Herring , Jerome Brunet , Qianggui Song , Jianxin Pan , Jian Hu , , , , , Subject: [PATCH v3 0/4] add meson secure watchdog driver Date: Fri, 25 Oct 2019 14:13:00 +0800 Message-ID: <1571983984-11771-1-git-send-email-xingyu.chen@amlogic.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.28.8.22] Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The watchdog controller on the Meson-A/C series SoCs is moved to secure world, We have to call SMC instruction to trap the ATF for watchdog operation. These operations are different from previous SoCs, so we introduce a new watchdog driver to support this kind of SoCs. Changes since v2 at [1]: - remove useless dependency in Kconfig - return zero when getting left time value fails Changes since v1 at [0]: - add a new dependency in Kconfig - simplify/add the return operation - remove useless ping operation when setting the timeout - fix some return values - fix the license statement [0]:https://lore.kernel.org/linux-amlogic/1570874721-36077-1-git-send-email-xingyu.chen@amlogic.com [1]:https://lore.kernel.org/linux-amlogic/1571387622-35132-1-git-send-email-xingyu.chen@amlogic.com Xingyu Chen (4): firmware: meson_sm: add new SMC ID support for accessing secure watchdog dt-bindings: watchdog: add new binding for meson secure watchdog watchdog: add meson secure watchdog driver arm64: dts: a1: add secure watchdog controller .../bindings/watchdog/amlogic,meson-sec-wdt.yaml | 34 ++++ arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 6 + drivers/firmware/meson/meson_sm.c | 1 + drivers/watchdog/Kconfig | 16 ++ drivers/watchdog/Makefile | 1 + drivers/watchdog/meson_sec_wdt.c | 187 +++++++++++++++++++++ include/linux/firmware/meson/meson_sm.h | 1 + 7 files changed, 246 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml create mode 100644 drivers/watchdog/meson_sec_wdt.c -- 2.7.4