From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794582052; b=rciLCSFYZpKtaCnd0YPawa89K21xAANlO8+Irh2nb6rn/7KkusU7Zvxd1+KAwB8n74zW P292+b/5aT4/iFJIR2emYevelKdNVNStyZEhJJn0laIzPJIgAcAXD+Bek4lUq8vrlIxOo YzYWYySw1VrPt/HW9MiKTJdBi93qkrGV6oyFANdg9tCN3bU9WqNuQy365zqCjB8imnJ1n ZzQaT/Klhnx7yjVHkuaBkyT+1byay9qRZaGpvHcSDSLf0vyE9h6q0cKETHk5kyLxSKE8O aRqLLtTI7s4/mlKtSqYNcaUWy5t/XTZB/9P5He2fDeUZFu2s1VLqE9Ynni6sKeiGsqw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794582052; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=ECU2TElv91yxQnOvgc867H8L47o3wHkMu4XssOR6zp4=; b=lOWQ1DPoMY/sJJKOP8nXos5D00sLWP4Pd/WeRM1t3Ln/UwSofhKprzBSy4ha3VXjQ2zz N8XnHxZqx4toZXJh23VOfbJQBsPJOETk9Zb1vRP3Gduf5J/EftX4YK6/64O2aaC6bwpJr O6S+2bB2EW/EPwmT9EBpwiLdv9Mxy16jr1XNLlMCBz+7PsecMh5VTjKwnw2Ypps4zke6H BrIuXNQY2QMlUt+Q+0NTKvUhiIRIz3r2JgedcM1pem5UDfMCTSQnErHbXxpjOFOTqwgMV WNgZPYRqVlk8QKMu6RKcEUOVslXZul0AuXOEVN/G6NukCTq1BRE+iSZOdbB1CW097Cw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=mEcequ7l; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D47A606A333; Fri, 13 Nov 2026 15:00:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=mEcequ7l Received: by smtp.kernel.org (Postfix) with ESMTPSA id 657881F000C4; Fri, 13 Nov 2026 15:00:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794582051; bh=ECU2TElv91yxQnOvgc867H8L47o3wHkMu4XssOR6zp4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=mEcequ7lJSY0QqmebgyYBL2GVsiv3FYw/JOKPUTDI5HDXixYS6ovbYXxqZvcL8N5k aEOwBGO72ci2H9mHCLHcszDgGwxlpA32YyUN10eWL2aRs/N40CVeZM33qg6Sk9RZpk X051Th5jZ37nOT/KqB1wOJwc+hT1nLCW/EZdePgikIwD1WZt79l57FhuoSrRcWguRl JF9OZXYVNaVgIlrJa1m57hWfJ+CDdbo7upeHd2Q1aUQiR6woEX3/u12fsgOY5CBeDG Ju9fHJ+XZ0vHCSr6gdPFK35z9GOmOvpIvzkvtkzK4SG3e05e4zgorUgxbkJ4jA9FO0 ys38v0vVQoqnQ== Date: Fri, 13 Nov 2026 09:00:49 -0600 From: Rob Herring To: Agustin Santiago Isasmendi Cc: Russell King , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Stefan =?iso-8859-1?Q?D=F6singer?= , Navid Ghahremani , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org Subject: Re: [PATCH v2 1/2] dt-bindings: cache: l2c2x0: a disabled node is left to the firmware Message-ID: <20261113150049.GA903773-robh@kernel.org> References: <20261112072953.989664-1-isasmendi.agus@gmail.com> <20261112072953.989664-2-isasmendi.agus@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261112072953.989664-2-isasmendi.agus@gmail.com> On Thu, Nov 12, 2026 at 08:29:52AM +0100, Agustin Santiago Isasmendi wrote: > l2x0_of_init() is about to honour status = "disabled" on the L2 cache > node by leaving the controller alone. Say that the firmware must then > leave the cache disabled: the kernel does not check or change its state. > > Assisted-by: LLM > Signed-off-by: Agustin Santiago Isasmendi > --- > Documentation/devicetree/bindings/cache/l2c2x0.yaml | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/devicetree/bindings/cache/l2c2x0.yaml b/Documentation/devicetree/bindings/cache/l2c2x0.yaml > index ee604117ffb3..15b5d8c1ebdf 100644 > --- a/Documentation/devicetree/bindings/cache/l2c2x0.yaml > +++ b/Documentation/devicetree/bindings/cache/l2c2x0.yaml > @@ -24,6 +24,9 @@ description: |+ > early secure boot code. Thus no need to deal with their configuration > in the kernel at all. > > + Note 2: A node with status = "disabled" is not touched by the kernel at > + all: the firmware must leave the cache disabled. > + No need for this. That is the expectation of any disabled status. The OS should treat a disabled node like it is not there. CPU nodes are an exception. Rob