From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933380AbcE3N2w (ORCPT ); Mon, 30 May 2016 09:28:52 -0400 Received: from mail-wm0-f52.google.com ([74.125.82.52]:35365 "EHLO mail-wm0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933064AbcE3N2u (ORCPT ); Mon, 30 May 2016 09:28:50 -0400 From: Neil Armstrong To: Wim Van Sebroeck , Guenter Roeck Cc: Neil Armstrong , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-watchdog@vger.kernel.org Subject: [PATCH 0/3] watchdog: Add Amlogic Meson GXBB Watchdog Timer driver Date: Mon, 30 May 2016 15:29:05 +0200 Message-Id: <1464614948-28247-1-git-send-email-narmstrong@baylibre.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 Adds support for the Amlogic Meson GXBB SoC Watchdog Timer. It differs from the meson6/meson8b HW, so need for a separate driver. The HW provides a divider capable of having a 1ms timebase thus simplifying the counter update. The restart call is not provided even if the HW is capable of triggering a system reset immediately because of the PSCI firmare having such functionnality. The watchdog is not expected to be running at boot time since there is a separate system-level watchdog running from the SCPI co-processor, but this case would be handle in a next driver update. Changes since RFC version at http://lkml.kernel.org/r/1464249112-13658-1-git-send-email-narmstrong@baylibre.com : - Remove status callback, will re-introduce it later to managed the already-running use case - Fix registers defines indentation - Fix space between operators - Make all callbacks static functions - Fix bindings with missing clocks attribute - Do not stop/start watchdog on a timeout setup - Fix probe device configuration Neil Armstrong (3): watchdog: Add Meson GXBB Watchdog Driver dt-bindings: watchdog: Add Meson GXBB Watchdog bindings ARM64: dts: amlogic: meson-gxbb: Add watchdog node .../bindings/watchdog/meson-gxbb-wdt.txt | 16 ++ arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 + drivers/watchdog/Makefile | 1 + drivers/watchdog/meson_gxbb_wdt.c | 277 +++++++++++++++++++++ 4 files changed, 300 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/meson-gxbb-wdt.txt create mode 100644 drivers/watchdog/meson_gxbb_wdt.c -- 2.7.0