From nobody Fri Feb 13 17:31:40 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7928CD4F49 for ; Fri, 22 Sep 2023 10:43:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233426AbjIVKnV (ORCPT ); Fri, 22 Sep 2023 06:43:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233509AbjIVKm7 (ORCPT ); Fri, 22 Sep 2023 06:42:59 -0400 Received: from thorn.bewilderbeest.net (thorn.bewilderbeest.net [IPv6:2605:2700:0:5::4713:9cab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA98CCD9; Fri, 22 Sep 2023 03:42:51 -0700 (PDT) Received: from hatter.bewilderbeest.net (unknown [IPv6:2602:61:7e5d:5300::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: zev) by thorn.bewilderbeest.net (Postfix) with ESMTPSA id EB76BDF7; Fri, 22 Sep 2023 03:42:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bewilderbeest.net; s=thorn; t=1695379371; bh=yEJRk36PamlziKMB+UNON9U9XmbSmCP6VmAnmy2v564=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FdpzU5LXDVVSS4913OcvNJRjl97xfjulGfglBAUe8N0kVsuhqBSAXcEQ27WZhivMw Jq5yYULxHrh6YyxWwVuj2Vb3XdIb2Id/FJZ3JCAHTFqY80lP4AD1T9NB+bKprx9V8M 1iDNQlwPWkUGZTbIn6lOYbK2jmDDa3hphyd1xLMs= From: Zev Weiss To: Andrew Jeffery , Conor Dooley , Guenter Roeck , Joel Stanley , Krzysztof Kozlowski , "Milton D. Miller II" , Rob Herring , Wim Van Sebroeck , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, openbmc@lists.ozlabs.org Cc: Zev Weiss , Eddie James , Ivan Mikhaylov , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Subject: [PATCH 1/2] dt-bindings: watchdog: aspeed-wdt: Add aspeed,reset-mask property Date: Fri, 22 Sep 2023 03:42:33 -0700 Message-ID: <20230922104231.1434-5-zev@bewilderbeest.net> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230922104231.1434-4-zev@bewilderbeest.net> References: <20230922104231.1434-4-zev@bewilderbeest.net> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This property configures the Aspeed watchdog timer's reset mask, which controls which peripherals are reset when the watchdog timer expires. Some platforms require that certain devices be left untouched across a reboot; aspeed,reset-mask can now be used to express such constraints. Signed-off-by: Zev Weiss Reviewed-by: Rob Herring --- .../bindings/watchdog/aspeed-wdt.txt | 18 +++- include/dt-bindings/watchdog/aspeed-wdt.h | 92 +++++++++++++++++++ 2 files changed, 109 insertions(+), 1 deletion(-) create mode 100644 include/dt-bindings/watchdog/aspeed-wdt.h diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Do= cumentation/devicetree/bindings/watchdog/aspeed-wdt.txt index a8197632d6d2..3208adb3e52e 100644 --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt @@ -47,7 +47,15 @@ Optional properties for AST2500-compatible watchdogs: is configured as push-pull, then set the pulse polarity to active-high. The default is active-low. =20 -Example: +Optional properties for AST2500- and AST2600-compatible watchdogs: + - aspeed,reset-mask: A bitmask indicating which peripherals will be reset= if + the watchdog timer expires. On AST2500 this should be a + single word defined using the AST2500_WDT_RESET_* macros; + on AST2600 this should be a two-word array with the first + word defined using the AST2600_WDT_RESET1_* macros and the + second word defined using the AST2600_WDT_RESET2_* macros. + +Examples: =20 wdt1: watchdog@1e785000 { compatible =3D "aspeed,ast2400-wdt"; @@ -55,3 +63,11 @@ Example: aspeed,reset-type =3D "system"; aspeed,external-signal; }; + + #include + wdt2: watchdog@1e785040 { + compatible =3D "aspeed,ast2600-wdt"; + reg =3D <0x1e785040 0x40>; + aspeed,reset-mask =3D ; + }; diff --git a/include/dt-bindings/watchdog/aspeed-wdt.h b/include/dt-binding= s/watchdog/aspeed-wdt.h new file mode 100644 index 000000000000..7ae6d84b2bd9 --- /dev/null +++ b/include/dt-bindings/watchdog/aspeed-wdt.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ + +#ifndef DT_BINDINGS_ASPEED_WDT_H +#define DT_BINDINGS_ASPEED_WDT_H + +#define AST2500_WDT_RESET_CPU (1 << 0) +#define AST2500_WDT_RESET_COPROC (1 << 1) +#define AST2500_WDT_RESET_SDRAM (1 << 2) +#define AST2500_WDT_RESET_AHB (1 << 3) +#define AST2500_WDT_RESET_I2C (1 << 4) +#define AST2500_WDT_RESET_MAC0 (1 << 5) +#define AST2500_WDT_RESET_MAC1 (1 << 6) +#define AST2500_WDT_RESET_GRAPHICS (1 << 7) +#define AST2500_WDT_RESET_USB2_HOST_HUB (1 << 8) +#define AST2500_WDT_RESET_USB_HOST (1 << 9) +#define AST2500_WDT_RESET_HID_EHCI (1 << 10) +#define AST2500_WDT_RESET_VIDEO (1 << 11) +#define AST2500_WDT_RESET_HAC (1 << 12) +#define AST2500_WDT_RESET_LPC (1 << 13) +#define AST2500_WDT_RESET_SDIO (1 << 14) +#define AST2500_WDT_RESET_MIC (1 << 15) +#define AST2500_WDT_RESET_CRT (1 << 16) +#define AST2500_WDT_RESET_PWM (1 << 17) +#define AST2500_WDT_RESET_PECI (1 << 18) +#define AST2500_WDT_RESET_JTAG (1 << 19) +#define AST2500_WDT_RESET_ADC (1 << 20) +#define AST2500_WDT_RESET_GPIO (1 << 21) +#define AST2500_WDT_RESET_MCTP (1 << 22) +#define AST2500_WDT_RESET_XDMA (1 << 23) +#define AST2500_WDT_RESET_SPI (1 << 24) +#define AST2500_WDT_RESET_SOC_MISC (1 << 25) + +#define AST2500_WDT_RESET_DEFAULT 0x023ffff3 + +#define AST2600_WDT_RESET1_CPU (1 << 0) +#define AST2600_WDT_RESET1_SDRAM (1 << 1) +#define AST2600_WDT_RESET1_AHB (1 << 2) +#define AST2600_WDT_RESET1_SLI (1 << 3) +#define AST2600_WDT_RESET1_SOC_MISC0 (1 << 4) +#define AST2600_WDT_RESET1_COPROC (1 << 5) +#define AST2600_WDT_RESET1_USB_A (1 << 6) +#define AST2600_WDT_RESET1_USB_B (1 << 7) +#define AST2600_WDT_RESET1_UHCI (1 << 8) +#define AST2600_WDT_RESET1_GRAPHICS (1 << 9) +#define AST2600_WDT_RESET1_CRT (1 << 10) +#define AST2600_WDT_RESET1_VIDEO (1 << 11) +#define AST2600_WDT_RESET1_HAC (1 << 12) +#define AST2600_WDT_RESET1_DP (1 << 13) +#define AST2600_WDT_RESET1_DP_MCU (1 << 14) +#define AST2600_WDT_RESET1_GP_MCU (1 << 15) +#define AST2600_WDT_RESET1_MAC0 (1 << 16) +#define AST2600_WDT_RESET1_MAC1 (1 << 17) +#define AST2600_WDT_RESET1_SDIO0 (1 << 18) +#define AST2600_WDT_RESET1_JTAG0 (1 << 19) +#define AST2600_WDT_RESET1_MCTP0 (1 << 20) +#define AST2600_WDT_RESET1_MCTP1 (1 << 21) +#define AST2600_WDT_RESET1_XDMA0 (1 << 22) +#define AST2600_WDT_RESET1_XDMA1 (1 << 23) +#define AST2600_WDT_RESET1_GPIO0 (1 << 24) +#define AST2600_WDT_RESET1_RVAS (1 << 25) + +#define AST2600_WDT_RESET1_DEFAULT 0x030f1ff1 + +#define AST2600_WDT_RESET2_CPU (1 << 0) +#define AST2600_WDT_RESET2_SPI (1 << 1) +#define AST2600_WDT_RESET2_AHB2 (1 << 2) +#define AST2600_WDT_RESET2_SLI2 (1 << 3) +#define AST2600_WDT_RESET2_SOC_MISC1 (1 << 4) +#define AST2600_WDT_RESET2_MAC2 (1 << 5) +#define AST2600_WDT_RESET2_MAC3 (1 << 6) +#define AST2600_WDT_RESET2_SDIO1 (1 << 7) +#define AST2600_WDT_RESET2_JTAG1 (1 << 8) +#define AST2600_WDT_RESET2_GPIO1 (1 << 9) +#define AST2600_WDT_RESET2_MDIO (1 << 10) +#define AST2600_WDT_RESET2_LPC (1 << 11) +#define AST2600_WDT_RESET2_PECI (1 << 12) +#define AST2600_WDT_RESET2_PWM (1 << 13) +#define AST2600_WDT_RESET2_ADC (1 << 14) +#define AST2600_WDT_RESET2_FSI (1 << 15) +#define AST2600_WDT_RESET2_I2C (1 << 16) +#define AST2600_WDT_RESET2_I3C_GLOBAL (1 << 17) +#define AST2600_WDT_RESET2_I3C0 (1 << 18) +#define AST2600_WDT_RESET2_I3C1 (1 << 19) +#define AST2600_WDT_RESET2_I3C2 (1 << 20) +#define AST2600_WDT_RESET2_I3C3 (1 << 21) +#define AST2600_WDT_RESET2_I3C4 (1 << 22) +#define AST2600_WDT_RESET2_I3C5 (1 << 23) +#define AST2600_WDT_RESET2_ESPI (1 << 26) + +#define AST2600_WDT_RESET2_DEFAULT 0x03fffff1 + +#endif --=20 2.40.0.5.gf6e3b97ba6d2.dirty