From patchwork Sat Oct 12 10:05:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Chen X-Patchwork-Id: 11186749 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 97EDB112B for ; Sat, 12 Oct 2019 10:05:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 65FCA21D7E for ; Sat, 12 Oct 2019 10:05:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="W6OvviQ3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 65FCA21D7E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amlogic.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=mlzv79V8Xh4YdlNzSYncSjMiZceSJO2t792+uBQ6vNw=; b=W6OvviQ3aM+YBz EEfuva0rQeSTnqIyso6VoU2n6UsEHb+qLysI1qTgqemZ7CN9J8GjUxTvoqbz67BzhmGcwg+Iox8hF +xcsxQx1T9DmYntXBV5N0QcQw9Dsd5fBR0Es7yzXyKIySUxM1HRoW4jh6O0AGm40QNUP4QgfR/2nm 00C48Fif80n0EGoeWmlEHU2HA+Ym3cEV4Gw6c0okenTmCubVdpfj9H5Ykpyw0383YxVvTZEL6SmlB QFgLD6s2wJw29YplDiVU736WFhIbbcP5SKuGn68gh7sNjT+Ploj9v4C6s+i+DJU6/h1LON3Hw+2fQ Ja0DrsJ8C6pqSJCPpm3g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iJEHE-0001UL-5t; Sat, 12 Oct 2019 10:05:32 +0000 Received: from mail-sz.amlogic.com ([211.162.65.117]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iJEHB-0001Sr-Nk; Sat, 12 Oct 2019 10:05:30 +0000 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; Sat, 12 Oct 2019 18:05:30 +0800 From: Xingyu Chen To: Wim Van Sebroeck , Guenter Roeck , Kevin Hilman , Neil Armstrong Subject: [PATCH 0/4] add meson secure watchdog driver Date: Sat, 12 Oct 2019 18:05:17 +0800 Message-ID: <1570874721-36077-1-git-send-email-xingyu.chen@amlogic.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.28.8.22] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191012_030529_772290_DF62AB78 X-CRM114-Status: UNSURE ( 8.47 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Qianggui Song , linux-watchdog@vger.kernel.org, Jianxin Pan , linux-kernel@vger.kernel.org, Rob Herring , Jian Hu , linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, Xingyu Chen , Jerome Brunet Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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. 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 | 205 +++++++++++++++++++++ include/linux/firmware/meson/meson_sm.h | 1 + 7 files changed, 264 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml create mode 100644 drivers/watchdog/meson_sec_wdt.c