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[34.38.134.32]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4362559ec46sm167475755e9.20.2024.12.17.01.40.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Dec 2024 01:40:45 -0800 (PST) From: Tudor Ambarus Subject: [PATCH v5 0/3] mailbox: add Samsung Exynos driver Date: Tue, 17 Dec 2024 09:40:19 +0000 Message-Id: <20241217-acpm-v4-upstream-mbox-v5-0-cd1d3951fe84@linaro.org> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAARHYWcC/4WNQQqDMBBFryKz7pQYItWueo/iIupEBxojEysWy d2beoEu34P//gGRhCnCvThAaOPIYc5QXQroJzuPhDxkBq20KXWp0faLx83ge4mrkPXou7BjY+p baZQynaogbxchx/vZfbaZJ45rkM95s5mf/VfMQqHSrh6o0b2z7vHi2Uq4BhmhTSl9Ae8VCC67A AAA To: Jassi Brar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krzysztof Kozlowski , Alim Akhtar Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, andre.draszik@linaro.org, peter.griffin@linaro.org, kernel-team@android.com, willmcvicker@google.com, daniel.lezcano@linaro.org, vincent.guittot@linaro.org, ulf.hansson@linaro.org, arnd@arndb.de, Tudor Ambarus X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1734428445; l=2295; i=tudor.ambarus@linaro.org; s=20241212; h=from:subject:message-id; bh=aqXs/GouKrhkgUshCq7lvESEEVCZFwMG74JU0NNq6zY=; b=V0N28bPBxuwqNn8Aji3OUsPBTYyftNw2zGFwhrQtFnRXAbFk6Vu1sP/bEGYpyY70C20d7sHhs +kce7NAcQ6WB7fLRsit3nSg+U5MV6iSAwYQfNKjAq0WnWq6fHwq51BH X-Developer-Key: i=tudor.ambarus@linaro.org; a=ed25519; pk=uQzE0NXo3dIjeowMTOPCpIiPHEz12IA/MbyzrZVh9WI= The samsung exynos mailbox controller has 16 flag bits for hardware interrupt generation and a shared register for passing mailbox messages. When the controller is used by the ACPM protocol the shared register is ignored and the mailbox controller acts as a doorbell. The controller just raises the interrupt to APM after the ACPM protocol has written the message to SRAM. Changes in v5: - fix dt-bindings by using the correct compatible name in the example - drop redundand "bindings" from the dt-bindings patch subject - rebase on top of v6.13-rc3 - Link to v4: https://lore.kernel.org/r/20241212-acpm-v4-upstream-mbox-v4-0-02f8de92cfaf@linaro.org Changes in v4: - rename bindings file to be based on compatible: google,gs101-acpm-mbox - specify doorbell or data mode via '#mbox-cells' dt property. Update driver and introduce exynos_mbox_of_xlate() to parse the mode. - s/samsung/Samsung/, s/exynos/Exynos/ - use writel instead of writel_relaxed - remove stray of_match_ptr() - Link to v3: https://lore.kernel.org/linux-arm-kernel/20241205174137.190545-1-tudor.ambarus@linaro.org/ Changes in v3: - decouple the mailbox controller driver from the ACPM protocol driver - address Krzysztof's review comments v2: https://lore.kernel.org/linux-arm-kernel/20241017163649.3007062-1-tudor.ambarus@linaro.org/ v1: https://lore.kernel.org/linux-arm-kernel/20241004165301.1979527-1-tudor.ambarus@linaro.org/ Signed-off-by: Tudor Ambarus --- Tudor Ambarus (3): dt-bindings: mailbox: add google,gs101-mbox mailbox: add Samsung Exynos driver MAINTAINERS: add entry for Samsung Exynos mailbox driver .../bindings/mailbox/google,gs101-mbox.yaml | 79 +++++++++ MAINTAINERS | 10 ++ drivers/mailbox/Kconfig | 11 ++ drivers/mailbox/Makefile | 2 + drivers/mailbox/exynos-mailbox.c | 184 +++++++++++++++++++++ include/dt-bindings/mailbox/google,gs101.h | 14 ++ 6 files changed, 300 insertions(+) --- base-commit: 78d4f34e2115b517bcbfe7ec0d018bbbb6f9b0b8 change-id: 20241212-acpm-v4-upstream-mbox-948714004b05 Best regards,