From mboxrd@z Thu Jan 1 00:00:00 1970 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 782973033C0; Thu, 2 Apr 2026 18:07:30 +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=1775153250; cv=none; b=X2G9iXw1zV9D95OJwxWWyyreYoRZknDgca4h7/01Nb1ndOc2KVvCX4bbCSI/mUbXBMZ657yn3ibl//vu8oqHvO7/w/zeJqwg6ItVo/lYNnxheIZfQCg8JUHtsvU0MoUX36wvSXbcTVo5yammGQxSKq0R0sKf+JP3b+rv+7b2qBU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775153250; c=relaxed/simple; bh=z0rx4uq00Q9234doig/yq98Bb0sNvBBK0X35d8mDbVs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uFuroGMYo/4pi0CFwnVphPUCzstIpnhFrKsoBtcQqPXr1PsdawG27tnTGss9e5iLWx3vDVE+JoSbQxL2ojndhmFlDoyeJhH8cMLzzpwP2RnOjN8yQXxIrOG3h8X0S28aAr1qZNU59DQqrYmoabDgTwIrCcZ282q3LyyhxKsHX+I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ODdjTrFK; 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="ODdjTrFK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 108FDC116C6; Thu, 2 Apr 2026 18:07:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775153250; bh=z0rx4uq00Q9234doig/yq98Bb0sNvBBK0X35d8mDbVs=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ODdjTrFKEvBKknN7n/FV4oACUvBmfihBxWnBPRs0AhVhQYYRh0C/fVxtHttgJd8Sq E+YchLRhNJc2bEX1pfOEF0BHME4oHH2UYlMD38SjI/4q02dKeJrY+51hy4ETQDdDfO bg4kAmDW9y8VJ/T1urVr7MasBZZpVYDRaRQkMMLcge7Cxy+wDeXSJMsLPpPVW059bo 1DE75q+DayI57pkjDjl5fsFEU0/RZQrLR4TnC9z5YffCkS67P8ZqflWCqF1KRLuhxI FXAJj/HQ6dBFy+c9kn5lCf4HlhErlWB0Z5i8vy4GsU21pfZn1aFLtaLPNK4YBPZu8a c52qfOph0q3dw== Message-ID: <68f50e02-d12f-4f46-bdc1-812cbbb2bd0b@kernel.org> Date: Thu, 2 Apr 2026 20:07:25 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: PCI: Add compatible for AMD Versal2 CPM6 host bridge To: Sai Krishna Musham , bhelgaas@google.com, lpieralisi@kernel.org, kw@linux.com, mani@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, cassel@kernel.org Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, michal.simek@amd.com, bharat.kumar.gogada@amd.com, thippeswamy.havalige@amd.com References: <20260402180006.486229-1-sai.krishna.musham@amd.com> <20260402180006.486229-2-sai.krishna.musham@amd.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 02/04/2026 20:00, Sai Krishna Musham wrote: > Add the "amd,versal2-cpm6-host" compatible string for AMD Versal2 CPM6 > host bridge. > > CPM6 integrates a Synopsys DesignWare PCIe Root Port controller derived > from the same IP family as the existing MDB host bridge, but uses a > newer IP revision, supports PCIe Gen6 operation up to 64 GT/s per lane > and has differences in register layout. > > A separate compatible string is required to accurately describe the > CPM6 hardware and allow software to distinguish it from the MDB-based > host bridge. > > Signed-off-by: Sai Krishna Musham > --- > .../devicetree/bindings/pci/amd,versal2-mdb-host.yaml | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml > index 406c15e1dee1..be5a77908d24 100644 > --- a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml > +++ b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml > @@ -15,7 +15,9 @@ allOf: > > properties: > compatible: > - const: amd,versal2-mdb-host > + enum: > + - amd,versal2-mdb-host > + - amd,versal2-cpm6-host Why reversed alphabetical order? Best regards, Krzysztof