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Wed, 01 Apr 2026 19:19:40 -0700 (PDT) Received: from localhost ([94.4.195.193]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d1e2c3a01sm3815604f8f.12.2026.04.01.19.19.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 01 Apr 2026 19:19:39 -0700 (PDT) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Thu, 02 Apr 2026 03:19:37 +0100 Message-Id: Cc: "Sylwester Nawrocki" , "Chanwoo Choi" , "Alim Akhtar" , "Sam Protsenko" , "Michael Turquette" , "Stephen Boyd" , "Rob Herring" , "Conor Dooley" , "Tudor Ambarus" , "Jassi Brar" , "Krzysztof Kozlowski" , "Peter Griffin" , , , , , Subject: Re: [PATCH 0/5] Exynos850 APM-to-AP mailbox support From: "Alexey Klimov" To: "Krzysztof Kozlowski" , "Alexey Klimov" X-Mailer: aerc 0.21.0 References: <20260320-exynos850-ap2apm-mailbox-v1-0-983eb3f296fc@linaro.org> <20260321-beautiful-garnet-magpie-de4fbd@quoll> In-Reply-To: <20260321-beautiful-garnet-magpie-de4fbd@quoll> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260401_191943_473572_08AFC205 X-CRM114-Status: GOOD ( 14.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat Mar 21, 2026 at 10:44 AM GMT, Krzysztof Kozlowski wrote: > On Fri, Mar 20, 2026 at 09:15:12PM +0000, Alexey Klimov wrote: >> Hi all, >>=20 >> This patch series introduces support for the APM-to-AP mailbox on the=20 >> Exynos850 SoC. This mailbox is required for communicating with the APM= =20 >> co-processor using ACPM. >>=20 >> The Exynos850 mailbox operates similarly to the existing gs101=20 >> implementation, but the register offsets and IRQ mask bits differ.=20 >> This series abstracts these differences into platform-specific data=20 >> structures matched via the device tree. >>=20 >> Also, it requires APM-to-AP mailbox clock in CMU_APM block. >>=20 >> In theory this can be split into two series with correct dependecies: >> device tree node requires clock changes to be merged. The suggestion >> is to let this go through Samsung SoC tree with corresponding acks >> if it is okay. > > I don't understand why this cannot be split into two seris > *practically*. What is exactly the dependency between mailbox and DTS, > that it had to be combined here? Do you suggest to send 3 single patches with proper dependencies description? DT bindings change first, then mailbox change that specificall= y depends on dt-bindings change and then dts update (which will depend on bot= h)? I thought that mbox driver change depends implicitly on bindings update? Best regards, Alexey