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Wed, 11 Nov 2026 23:29:56 -0800 (PST) Received: from dev.Default ([86.127.229.203]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4ba0951bf2asm81897575e9.4.2026.11.11.23.29.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2026 23:29:55 -0800 (PST) From: Agustin Santiago Isasmendi To: Russell King Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , =?UTF-8?q?Stefan=20D=C3=B6singer?= , Navid Ghahremani , Krzysztof Kozlowski , Rob Herring , Conor Dooley , 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 Message-Id: <20261112072953.989664-2-isasmendi.agus@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20261112072953.989664-1-isasmendi.agus@gmail.com> References: <20261112072953.989664-1-isasmendi.agus@gmail.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261111_232958_776210_AE751669 X-CRM114-Status: GOOD ( 12.80 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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. + allOf: - $ref: /schemas/cache-controller.yaml# -- 2.30.2