From nobody Thu Dec 18 16:56:40 2025 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (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 A0A481F12E4; Fri, 21 Mar 2025 07:28:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742542129; cv=none; b=PMPqk3NcduY+sxCNXh9TDJ1Gx4Gx0mNBrG5GSjKmPfXmFWX2+9s5CO2rb7rsAn5XoQC67q4dvb21Ugax5JW7Wsu6r88GGh8negKvgQE+4pAXkUCcTfNw0JgrG+lRrnCyCHQQrWGmLHB8BdLa6frgH6qWwyR6ujivg02TWX2/RHA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742542129; c=relaxed/simple; bh=p/QorKJCn9XrFKbtYC8NvQNC1AWXOIPQaV8PshPU3mA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=G7pZ3klTns2ZQaGxRWVg6dtpS098lXaG3+St+qPHjp9T9rmCGlnRUc4pWeRbCsZMTnhlqxqOe0gwgRAxuMl8azRKe/S6J2C5sm+Ry2PcySVGNPG8czNkJiLNtdwEDZxHp1HzX8IZnzODyWLQlpERvjPpCDCcT9iCJUrGYBzGO0c= 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=aj6jv61W; arc=none smtp.client-ip=209.85.214.177 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="aj6jv61W" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-22409077c06so4482795ad.1; Fri, 21 Mar 2025 00:28:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1742542127; x=1743146927; 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=6yYy4AbJx68HMcvUd81BZlBUUo2lt5qzF5zCFnIAXP0=; b=aj6jv61WwiZZ0fwfdwhKdNqHrVd5nNb0VpEiSqUcL8XUdRfBTxne+DRtMpKZtnXC8H xnJfvahIQzwSrstiTSW0RQ4iiNjpRR7m00ClJ6o+KqBDpIwCMFxrb5lO/FN4L9+zeuZD 0SGnm58Rv7Mn2Td5RYvpx/k8EREMGVLao3QYOvkqjhkWMJYNjSiR7jOGO5135bFrWdKx UQxLsVi/e3NhhynvxbrGenxmzS/50JhkuKD3MKWp1rlQ3R5qhFpMVYerDvXr2ugtWQc+ YlGJwSx/rJUGQaJkea8Tg+OoVSQTkpfgeB8ZaI1wD7D+Ad6QYX9pbmcghIdMfou3WYwy BVfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742542127; x=1743146927; 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=6yYy4AbJx68HMcvUd81BZlBUUo2lt5qzF5zCFnIAXP0=; b=qMCsE3G1uq8sQNNi15StKpF6qsCF5dEXHMyWmzgj2luREXzyl2NTdQQYrwY5Z1hPDQ lD83Gnb6uqkIIMH3j4f+5MYISPpwt4J13M3HW39cGNnFqmvuuUJUIS1pbchdmKN9zvNW OTym8mjzdBXKm+34hiEyehuoZHjJYl5tZ4J1F++QB7wdNwv3Sogu7F6SVUuFy21tilXK Kbxa9yEngbTnCT6igfmpU1glKQqNwoKVuKXrKn6wsLufJemH/kVUrNkSZjee+gae5E2N 02BWcMr9CuMGnFO1fckeGNQSkHKyZfGtA8CHT9gYSwQz59g0Gf+ZMQetTFtgh6GCZdEO BFIA== X-Forwarded-Encrypted: i=1; AJvYcCUiiO26mAmKfSN38bm9UaGsVx9+GkbINn/U7ThWPocbTFhio7+7LoexnxXLHaKKR+agyG4R0LCpbD80k4k=@vger.kernel.org X-Gm-Message-State: AOJu0Yz0qdZpkKYA/KIbsyn84kE5nYaKguaqzss/6lpprOG9jDRTa7c+ KQoFHfX5PI2eZFxoX4z8E+/d8WrVlSOixpn97S+MmUkly19Yz5oL X-Gm-Gg: ASbGncvGnVgyk/miYvN3k1IMqPPBJIba1fFi868GAp1hLdG0c6Nrsxe8YTQGP0re81W qNQtrupq7gPSfqpNLSnDh4kObpWuT33anWzH+WBJDybfCKOWIt1Nvw/N40yXXomfhJ0JtlV96I/ meaSZ2Y73DEOGXWrEVPScmtKkUzXl1WXCPVygPri8t5mEMB/7RctSGd3pSERvOHgWWJHEmeKP7J 8K0sKY5m1pd1CSXGgZ4y5xVvLC9jh+oNkgBbyfHGAr9rJIMZJUhFLTw2/V6n/2jNXl0aMrsk0Rc cvZ5EpQZNFjqXqZ9WMWRXs2bliDWoioqx3y6ZnMWmI4f8BP7iUXuSQH06aWvc2d9Lz4cJ3QWdzY tGNmPwTDP0SeHFUSrI3OnMA== X-Google-Smtp-Source: AGHT+IFz7z9DTULNmP+oLx3nWMYzi7RsllXSFyhzZAy2FVTHB5ZXzxdUyhyyOFfzLur+HYKAMXEW7w== X-Received: by 2002:a17:902:d2d1:b0:224:24d5:f20a with SMTP id d9443c01a7336-22780e231a1mr42741185ad.48.1742542127003; Fri, 21 Mar 2025 00:28:47 -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 d9443c01a7336-22780f396fasm9862265ad.27.2025.03.21.00.28.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Mar 2025 00:28:46 -0700 (PDT) From: Potin Lai Date: Fri, 21 Mar 2025 15:26:09 +0800 Subject: [PATCH v6 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: <20250321-potin-catalina-dts-update-20250102-v6-8-4bd85efeb9b4@gmail.com> References: <20250321-potin-catalina-dts-update-20250102-v6-0-4bd85efeb9b4@gmail.com> In-Reply-To: <20250321-potin-catalina-dts-update-20250102-v6-0-4bd85efeb9b4@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=1742542103; l=1008; i=potin.lai.pt@gmail.com; s=20240724; h=from:subject:message-id; bh=p/QorKJCn9XrFKbtYC8NvQNC1AWXOIPQaV8PshPU3mA=; b=hV+DOjonfukNtIa7vGCSR+jzs82NRq4/way8tjyiwrTKrV6clGwwNua5InfHy7waqGTVFHXvK faEslXcUhw7DyXaYrSgm5Z7hz5gKtrp0n1tFujFjX9XQSfpXo2jPHzU 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 6702be32918e..2dbb65db9250 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