From nobody Sat Sep 26 23:52:38 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3E0663AA1BF; Fri, 28 Aug 2026 07:35:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787902553; cv=none; b=RV0ujBLXxBafzb/IAoZmcTUDrtkue0hpn4mVNjplCE3t7LQFj7AXX6FnLgRwteAp/lBJ7GHvlxaFD1yrILgFDSPwfUrnJQ5DGYUsuTTSmx36DZ6wI6vLLGifJ9DXPCuYtn//V+bJu2bWYtSU6/ec8JRmapier+OKGSy0HjzOZfM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787902553; c=relaxed/simple; bh=ZOBCA19VLQ1IKCeBijN70gbTvNCwCmZyIOxmk5n/RS0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=ED65gQuWSrxyNoIzR4LqRfuCzOwcWia/XVaNYUbEEx49Jehq9idK2v5EuXeoD4F72/5TFBYPG80L9jU53ZvBW4OaPFgp/cXbO1uujTFkjDYQdGyrTt1i4C4Qu7xYP3Ycs4ydmfMGQdXTGw/kZ8TRL+iLiFPrzirRUjYJv/ifmxk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=P6fcJnYB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="P6fcJnYB" Received: by smtp.kernel.org (Postfix) with ESMTPS id BBA88C2BCC7; Fri, 28 Aug 2026 07:35:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1787902552; bh=ZOBCA19VLQ1IKCeBijN70gbTvNCwCmZyIOxmk5n/RS0=; h=From:Date:Subject:To:Cc:Reply-To:From; b=P6fcJnYBFAFPNb+rLD734AKtJZcm1UY1AB47GGgxYNn4IbpsJSChO+h5+D5yJlZse RIAWAI0xYunON7sNE00ky5MVvuK7wJyfEXeJ3CbLzjCBZPUD2Mu5AR1bsFLW6ufFRV x0jdeRZhGN+f5/AGL3NDJxAvma3nYOG27SN9zo3gpV3u0b3yk8CQUw1s341F9rg1TP cYkWPTlHp9qGMcritB4wmWw4wupiVMVckfHJKgeSGekD4TOnrRWmXBDzHaLUlYMl2E mV+rkDDq1qMiKYU2bhuB8hCatrtWC8wApefGpj3/C0YQkP+P4M3c2+lMG4PstWkZTE lrZU0yfETzXEQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99041C61DCD; Fri, 28 Aug 2026 07:35:52 +0000 (UTC) From: Dirk Chen via B4 Relay Date: Fri, 28 Aug 2026 15:35:38 +0800 Subject: [PATCH] ARM: dts: aspeed: anacapa: Add MCTP I2C controller node 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: <20260828-anacapa-dts-amc-v1-1-463eb4e6a6a2@amd.com> X-B4-Tracking: v=1; b=H4sIAEk6kWoC/x3MPQqAMAxA4atIZgO2hfpzFXEINWoGa2lEBPHuF sdveO8B5SysMFQPZL5E5YgFpq4gbBRXRpmLwTbWN53tkCIFSoTzqUh7QN8aG9reO14clCplXuT +j+P0vh9XFmTzYQAAAA== X-Change-ID: 20260828-anacapa-dts-amc-6712c7963ef3 To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joel Stanley , Andrew Jeffery , Ryan Chen , Billy Tsai Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, Dirk Chen X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1787902540; l=1212; i=dirkchen@amd.com; s=20260202; h=from:subject:message-id; bh=rEGeEm+ATZyoe3HxKSYL2gspIoEHBpWwgs2ytKBM6Z4=; b=Z63sFH/O7K+hj/ourvWsfKtVprO2gAFZc2jSHH6Tbxnbat8MpVQlRfpYi3XVYZFUWaSrvasBs +1b7UiNVonCDvhTqDRb4Ig/k6pcCe5oU0prhRBDgXib5zdgVH7BKUkW X-Developer-Key: i=dirkchen@amd.com; a=ed25519; pk=NBIyLsVg/YYtGLruq9XLdLWx2PP/1MH4jDDQ1V+7wes= X-Endpoint-Received: by B4 Relay for dirkchen@amd.com/20260202 with auth_id=622 X-Original-From: Dirk Chen Reply-To: dirkchen@amd.com From: Dirk Chen The Facebook Anacapa BMC uses I2C5 as an MCTP (Management Component Transport Protocol) bus. This patch enables the controller by adding the mctp-i2c-controller node under I2C5, with multi-master support. Signed-off-by: Dirk Chen --- The Facebook Anacapa platform uses I2C5 as an MCTP (Management Component Transport Protocol) bus for communication with the AMC. --- arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa.dts b/arc= h/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa.dts index 1fddf3a5d138..6073a643ea80 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa.dts @@ -433,6 +433,14 @@ i2c4mux0ch7: i2c@7 { // AMC &i2c5 { status =3D "okay"; + + mctp-controller; + multi-master; + + mctp@10 { + compatible =3D "mctp-i2c-controller"; + reg =3D <(0x10 | I2C_OWN_SLAVE_ADDRESS)>; + }; }; =20 // MB --- base-commit: 3d83758432b5e6ed9507500a57efb0f3af41ee7d change-id: 20260828-anacapa-dts-amc-6712c7963ef3 Best regards, --=20 Dirk Chen