From nobody Wed Dec 17 10:49:05 2025 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8CF452248AC; Thu, 20 Mar 2025 15:24:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742484291; cv=none; b=Hj6iaj7+3Jey1pLAwplTjYdSW2rFXpENwGh5PC9uUyT7fVxfmBW6PNjqQ+O2kTYb7JuTwNFpgWxZAIht0jI7X+50mu2sDiJ5ltpFdqBicYhVc8WATyea2IHIbCuCkwzqHH4jiQRWU4efkAJYijfd9vOShgM9OCAZw67f9UvK9IM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742484291; c=relaxed/simple; bh=EUweIVFlYiMF8bhCySW4H9ia8wPetO4bJ+6FKYLTF4U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OgbieLwn7fpAlSC1qXL/EiwEzfSLzfxIOCJ2Mhl5ovE6/m7BxUBw3I/22vjxO8ETp0EaeVPdlb6TJ1gIYRAUAWdpmtZaPKyLJE1FVu043m6eNYNNKRfNPVo70UwEPek+Ts1m1cgP70jf1HQ4YnuaHYkg8Kk2bzAvYvzVDWNhvM4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=dpGkCgkh; arc=none smtp.client-ip=209.85.214.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dpGkCgkh" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-22580c9ee0aso19771325ad.2; Thu, 20 Mar 2025 08:24:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1742484290; x=1743089090; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=2C2x2YqAzE+wgdoLnExW9swbh2264Dz3KcOzm8hz2vw=; b=dpGkCgkhPyutCh2bOEPnUMNCiebbMHzgnldbY10gYQyoLzllYzD05Ei2FW6KCWZoG1 BpwjKaZIMhipt8f+i/1gK695DRwqJCoFk9TTqm9YxA4X7Fsll02Cp+IWuZq5hVfSPhgQ jtDgbms0aS1LcC5Kq1Q+61Cdj+JYFkIffqMR4LuHH9MkUh98hnFK7eOIqDExYARJxwc4 W2PuNlpjo9/9hjhrt8ncXDPODvo7QvwAq4r3dSe/65occorXm/POIHaEwDG9pEA7nAfh vKcPppBavKhga61JmKMnysVfWBjqOBpZdIExb43mkejE0cO7pu0FVZvZ/gAyEP00pPnQ o7eA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742484290; x=1743089090; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=2C2x2YqAzE+wgdoLnExW9swbh2264Dz3KcOzm8hz2vw=; b=tMt64PFXFDLajjAAgarr0rPVvX5Iv9yOeskXqJDFrvB82SIeOrH3eLUufYNEyJhGJD UZfHrm0IuQg+Wa8a5zDRTadov4YwBBXmTPLn44JxfKwb0zggiCb5PLLftn1wdd95TWcr NLedsKDdjEbhXXx1oGhOIjFvxgrD0VY4eKVWvjbvf1PmjhpXJZRUxalPHbrS2ozM4ra4 VEJFasmc0req2QXa8OeXB0AeSMqt52sOCgCxjH0OUW5agItamnCcDAu/0SNAOSE54zEx 6ok8uhdKDLOQccu8rcUEuWCJ/6FNZNlXpptsnBvgGsrHUS0gUkFFoZ6wxfwiIs1mrVwB 4GVA== X-Forwarded-Encrypted: i=1; AJvYcCW8xQ3libMHvt/zxrmE2ZfK6reUzRIojIAy05C0fFqga9l6gnS6fYBa32Rsd++boAwY4Gw/Hl3wc0XgJmc=@vger.kernel.org X-Gm-Message-State: AOJu0YwabEljVvdxsVu8JsURet+AbFy0QOpDamFtQ8BWx2SpxLJmQ8dq qBT77iqFF7Df1LB1TYAxHgpOUA1xG4y/gZe0wKq2jxdqFm5sL4ax X-Gm-Gg: ASbGncupHh0m/pgCv/ssX2f/tJbkyO0+kXVFSv2f4Hgec64VvRgRwhepIEssEpLIT/c wC2EHdr131n353J9V81PCamK/l4srKZG8PzD2OpeUP5zGQ6sZpKwsCX6AZq173UhMwsbS6pfU/F xfnyKsdp/XZYDJ2Ga5r4TvY6MJUOilBGueXBK/9hj97yJlM+CcpQop8e+Yk/PsBRvdIlZVJhNAQ O50X9vBTAA1CpGvQ4h+P0JWxUESyXlVPvlhq6C0QPJ3S8WeIGvA2qLzONeWUxeUFQrmlnFvw6DX c3bVwG+68t9r6HwuHtPYX8qSJUu5sjmoW7JapeUjcz8ioFNjzCGECdhbdvdcd6UlBAD/XrqdT+i 7nuM19Iq918Q08PhDUVrsOg== X-Google-Smtp-Source: AGHT+IElDPX6u20sc4jGPjSUZZw3qo1ZEYivqxwtIPDdkwEzTDmmDNvT5Nl4muFEx+julDo++r1G7g== X-Received: by 2002:a17:902:ce07:b0:223:5e54:c521 with SMTP id d9443c01a7336-2265ea35407mr58249745ad.0.1742484289793; Thu, 20 Mar 2025 08:24:49 -0700 (PDT) Received: from localhost.localdomain (61-220-246-151.hinet-ip.hinet.net. [61.220.246.151]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-225c6bd4a8fsm136905515ad.234.2025.03.20.08.24.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Mar 2025 08:24:49 -0700 (PDT) From: Potin Lai Date: Thu, 20 Mar 2025 23:21:58 +0800 Subject: [PATCH v5 08/10] ARM: dts: aspeed: catalina: Enable multi-master on additional I2C buses Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250320-potin-catalina-dts-update-20250102-v5-8-e161be6583a7@gmail.com> References: <20250320-potin-catalina-dts-update-20250102-v5-0-e161be6583a7@gmail.com> In-Reply-To: <20250320-potin-catalina-dts-update-20250102-v5-0-e161be6583a7@gmail.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joel Stanley , Andrew Jeffery , Patrick Williams Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, Cosmo Chou , Potin Lai , Potin Lai X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1742484265; l=1008; i=potin.lai.pt@gmail.com; s=20240724; h=from:subject:message-id; bh=EUweIVFlYiMF8bhCySW4H9ia8wPetO4bJ+6FKYLTF4U=; b=kSwteKt/arVVylSZep8fMc7WzfoOs3oC1D9o+m9HYvsgOQiQth90tnxsRf2VTGYVDfLpsy4mP dIl4AtyZ4hDAbZWkIA0376ck9AuceRHGOiZ5GZ3b6BUT8stH+r6v5DK X-Developer-Key: i=potin.lai.pt@gmail.com; a=ed25519; pk=6Z4H4V4fJwLteH/WzIXSsx6TkuY5FOcBBP+4OflJ5gM= Update the device tree to enable `multi-master` mode on I2C buses shared between the host BMC and the NV module with HMC. This ensures proper bus arbitration and coordination in multi-master environments, preventing communication conflicts and improving reliability. Signed-off-by: Potin Lai --- arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts b/ar= ch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts index 1e1bcc9ac2f0..abf15d322605 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts @@ -815,6 +815,7 @@ ssif-bmc@10 { =20 &i2c12 { status =3D "okay"; + multi-master; =20 // Module 1 FRU EEPROM eeprom@50 { @@ -825,6 +826,7 @@ eeprom@50 { =20 &i2c13 { status =3D "okay"; + multi-master; =20 // Module 0 FRU EEPROM eeprom@50 { --=20 2.31.1