From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout02.posteo.de (mout02.posteo.de [185.67.36.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 56915449B26 for ; Mon, 7 Sep 2026 09:14:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.67.36.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788772456; cv=none; b=A9BvGNBnW3pfwqbT9hAsXASDUJKQ4G4GK8rnBKC0ArUZ3gufHPL7WenIs/v4BWaEJeJvf675KKA4jKKnR+Hbk5AfOoZF5ApeeW7ty8lQD2DGVXaF3vn4jwAmDiqZxqElLW+ARBmXmbtFSVCukHRvKFnBF1mw1LbMmKBGBDEG1r0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788772456; c=relaxed/simple; bh=GA6wvcj1HWiIJ0AOwtZSlOKX4RxLOBFB44mQLeyFXzg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Plb8fYXdHaVKmnghEuUvIIEXDfsBULxwCXU8TvR8mHI5I3LwceA0QKLpzakWc17S3LJMEzRzfwx4n6Qoc2FXyG8DoEoTExp9KBCH5cvKTNtqwo3tnZL3Eg09/44ChMc/bS/fyKHJsZOY75cTOM0FyvR6ZxR/udj42lfBkj4tiHE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=posteo.net; spf=pass smtp.mailfrom=posteo.net; dkim=pass (2048-bit key) header.d=posteo.net header.i=@posteo.net header.b=lwaaZOtU; arc=none smtp.client-ip=185.67.36.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=posteo.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=posteo.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=posteo.net header.i=@posteo.net header.b="lwaaZOtU" Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id B892D240103 for ; Mon, 7 Sep 2026 11:14:11 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=posteo.net; s=1984.8680eb; t=1788772451; bh=gzRNn/9KqahwkYAHP+82Y0/1urrH953paNl1KnHy+O8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version: Content-Transfer-Encoding:From; b=lwaaZOtUt5IYQVcP3ggg//m00AxpvTBE3cFvwXABha8ddWNMGlGmVJX1KOUhomAXu G4gpLqMApjmq/diD18D9HWijXuzwVdJXBdmhoBbKY/AHMPMTepVHY2kiFn5MRruCvb YHXuzKpCEzQhyCqf/GR7rs3wvDwxYJstzD3ysQBvwYiouXZ7bhW2VLHg25wAKLgDTU 5vG/cnT1sS+SilorICaRxT7vx8WMBvj8RksQlwbOxch3KGAzkqegxXCvB5ncK/Aqw5 HYyyBEFn2vsdSmkY7mGAVSmrxxxiUewCzYOKScZ+l2paJRRJfFTjvxBw1svH2qbFeD RHlyCMeGUVJRg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4hdhG95QPSz6v2H; Mon, 7 Sep 2026 11:14:09 +0200 (CEST) From: Mateusz Nowicki To: alexandre.torgue@foss.st.com, mcoquelin.stm32@gmail.com Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, lionel.debieve@foss.st.com, amelie.delaunay@foss.st.com, patrice.chotard@foss.st.com, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: dts: st: fix arm,smc-id of the SMC watchdog on stm32mp2 Date: Mon, 07 Sep 2026 09:14:11 +0000 Message-ID: <20260907091400.55954-1-mateusz.nowicki@posteo.net> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit OP-TEE implements the STM32MP2 watchdog SMC service with function ID 0xbc000000 (CFG_WDT_SM_HANDLER_ID), not 0xb200005a. With the current value the arm_smc_wdt probe fails with -EIO and the IWDG started by the bootloader is never refreshed. Fixes: 89fca38168c9 ("arm64: dts: st: add arm-wdt node for watchdog support on stm32mp251") Fixes: e9b03ef21386 ("arm64: dts: st: introduce stm32mp23 SoCs family") Signed-off-by: Mateusz Nowicki --- arch/arm64/boot/dts/st/stm32mp231.dtsi | 2 +- arch/arm64/boot/dts/st/stm32mp251.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi index 9e1d240888ff..35e247af957c 100644 --- a/arch/arm64/boot/dts/st/stm32mp231.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi @@ -35,7 +35,7 @@ arm-pmu { arm_wdt: watchdog { compatible = "arm,smc-wdt"; - arm,smc-id = <0xb200005a>; + arm,smc-id = <0xbc000000>; status = "disabled"; }; diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi index 9c63fdb5a885..2dcbba65e298 100644 --- a/arch/arm64/boot/dts/st/stm32mp251.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi @@ -36,7 +36,7 @@ arm-pmu { arm_wdt: watchdog { compatible = "arm,smc-wdt"; - arm,smc-id = <0xb200005a>; + arm,smc-id = <0xbc000000>; status = "disabled"; }; -- 2.55.0