From: Agustin Santiago Isasmendi <isasmendi.agus@gmail.com>
To: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>,
"Stefan Dösinger" <stefandoesinger@gmail.com>,
"Navid Ghahremani" <ghahramani.navid@gmail.com>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: cache: l2c2x0: a disabled node is left to the firmware
Date: Thu, 12 Nov 2026 08:29:52 +0100 [thread overview]
Message-ID: <20261112072953.989664-2-isasmendi.agus@gmail.com> (raw)
In-Reply-To: <20261112072953.989664-1-isasmendi.agus@gmail.com>
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 <isasmendi.agus@gmail.com>
---
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.
+
allOf:
- $ref: /schemas/cache-controller.yaml#
--
2.30.2
next prev parent reply other threads:[~2026-11-12 7:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-12 7:29 [PATCH v2 0/2] ARM: l2c: honour status = "disabled" on the L2 cache node Agustin Santiago Isasmendi
2026-11-12 7:29 ` Agustin Santiago Isasmendi [this message]
2026-11-12 7:29 ` [PATCH v2 2/2] " Agustin Santiago Isasmendi
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