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Thu, 30 Jul 2026 10:43:39 +0000 (GMT) Received: from ambtw-cas3.ambarella.net (10.2.4.228) by ambus-ex-se2.ambarella.net (10.1.4.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45; Thu, 30 Jul 2026 03:43:37 -0700 Received: from ambtw-cas3.ambarella.net (10.2.4.228) by ambtw-cas3.ambarella.net (10.2.4.228) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.58; Thu, 30 Jul 2026 18:43:36 +0800 Received: from shbuild7.ambarella.net (10.4.8.70) by ambtw-cas3.ambarella.net (10.2.4.228) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Thu, 30 Jul 2026 18:43:34 +0800 From: Long Zhao To: Arnd Bergmann , Alexandre Belloni , , CC: Rob Herring , Krzysztof Kozlowski , Conor Dooley , , "Michael Turquette" , Stephen Boyd , , Linus Walleij , , Greg Kroah-Hartman , Jiri Slaby , , Catalin Marinas , Will Deacon , , Long Zhao Subject: [PATCH 00/10] Ambarella CV75 SoC minimal bring-up Date: Thu, 30 Jul 2026 18:43:20 +0800 Message-ID: <20260730104330.81367-1-longzhao@ambarella.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain X-Proofpoint-GUID: QvM4xzgoxCOLYd73qqOIgifnYq3f3tNj X-Proofpoint-ORIG-GUID: QvM4xzgoxCOLYd73qqOIgifnYq3f3tNj X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMwMDA4MCBTYWx0ZWRfX1tEdZe81ZO4K QUPuxLiDizW8+3XNrG4D/MWaVod+ialWZrPUV2BCCYtp7p6QCk5xaQDaDjwQszi8q6F1SAwoV33 WmbyJcAML59SksXNAzZz8OFgstkSmk/mtjQ07X+vMNyUPxMqZ5TVlWZy7QzO1hCDJMs5zi8QOha pHmNZVkgSO4VoB4cqHByNCYIAE+//GWLw+OyFJlEGHFdgXArYf4QAcQaquaeq/n5tCPyQPEfqBi zqGOelsd5neibQ6Sdx0eTFIcu0kGxEk2r7+457mNKtJG3/m3uoXXM50z1EWBnV45VBd83bKfj8T 6xx5+ESvIFddqKuD/olVZ39vCTdc/U9hZLQNUeJIRfU2AaInokXrzfonGMf+j2U2BNSJIuX5XYn tPB0eElLah2iI3a31OvdnY1/Do33KUnOBcRDBtOTb47O5vAMrc/MvIsR3CUQFyxt0eVCtdMn8PZ LKMzPYRdH01FfT3bPJQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMwMDA4MCBTYWx0ZWRfXxeGiWCanzM/o +tPbj2ZnDJZUnL7aZmtSVWBhshynav+dwoOGtai8QjKipUziA5qnSH9pLRP5fgc5wrABnuxS1P0 uQ5dMSrYGcrck01AR/7/K2pfw1JRu+cOp65frmshp9CLNZMi0CqO X-Authority-Analysis: v=2.4 cv=PNE/P/qC c=1 sm=1 tr=0 ts=6a6b2adb cx=c_pps a=DgnZYc2JwZ3KnY28M5UqXQ==:117 a=DgnZYc2JwZ3KnY28M5UqXQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=yXVIz-0bn9infC194UBj:22 a=KblO7da7ppA7TBl3N-nE:22 a=2LzS6VQafNHXJvlkB2cA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-30_03,2026-07-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 adultscore=0 malwarescore=0 clxscore=1011 phishscore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607300080 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260730_034403_533396_720655D0 X-CRM114-Status: GOOD ( 14.15 ) 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 This series adds minimal Ambarella CV75 support sufficient for early bring-up with a serial console. It introduces DT bindings and drivers for the RCT clock controller, pinctrl, and UART, plus ARCH_AMBARELLA, a minimal CV75 EVK device tree, arm64 defconfig entries, and a MAINTAINERS entry. The goal of this first submission is a small, reviewable console-capable baseline. Further SoC peripherals can follow in later series. The series is based on linux-next. It has been booted on CV75 hardware with the serial console working. Testing: - Booted to console on CV75 EVK with initramfs - scripts/checkpatch.pl --strict - make dt_binding_check DT_SCHEMA_FILES=3Dambarella Long Zhao (10): dt-bindings: arm: add Ambarella CV75 platforms dt-bindings: soc: add Ambarella secure scratchpad dt-bindings: clock: add Ambarella CV75 RCT clock controller dt-bindings: pinctrl: add Ambarella CV75 pinctrl dt-bindings: serial: add Ambarella UART clk: ambarella: add CV75 CCU driver pinctrl: ambarella: add Ambarella pin controller serial: ambarella: add Ambarella UART driver arm64: ambarella: add ARCH_AMBARELLA and CV75 EVK DT MAINTAINERS: add ARM/AMBARELLA SoC support .../devicetree/bindings/arm/ambarella.yaml | 23 + .../bindings/clock/ambarella,cv75-rct.yaml | 94 + .../pinctrl/ambarella,cv75-pinctrl.yaml | 167 ++ .../bindings/serial/ambarella,uart.yaml | 55 + .../ambarella/ambarella,sec-scratchpad.yaml | 41 + .../devicetree/bindings/vendor-prefixes.yaml | 2 + MAINTAINERS | 18 + arch/arm64/Kconfig.platforms | 9 + arch/arm64/boot/dts/Makefile | 1 + arch/arm64/boot/dts/ambarella/Makefile | 3 + arch/arm64/boot/dts/ambarella/cv75-evk.dts | 30 + arch/arm64/boot/dts/ambarella/cv75.dtsi | 151 ++ arch/arm64/configs/defconfig | 3 + drivers/clk/Kconfig | 1 + drivers/clk/Makefile | 1 + drivers/clk/ambarella/Kconfig | 16 + drivers/clk/ambarella/Makefile | 6 + drivers/clk/ambarella/ccu-cv75.c | 296 ++++ drivers/clk/ambarella/ccu_common.c | 60 + drivers/clk/ambarella/ccu_common.h | 25 + drivers/clk/ambarella/ccu_mux_div.c | 223 +++ drivers/clk/ambarella/ccu_mux_div.h | 35 + drivers/clk/ambarella/ccu_pll.c | 374 ++++ drivers/clk/ambarella/ccu_pll.h | 70 + drivers/pinctrl/Kconfig | 15 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-ambarella.c | 1561 +++++++++++++++++ drivers/tty/serial/Kconfig | 21 + drivers/tty/serial/Makefile | 1 + drivers/tty/serial/ambarella_uart.c | 937 ++++++++++ .../dt-bindings/clock/ambarella,cv75-clock.h | 17 + .../dt-bindings/pinctrl/ambarella,pinctrl.h | 11 + 32 files changed, 4268 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/ambarella.yaml create mode 100644 Documentation/devicetree/bindings/clock/ambarella,cv75-= rct.yaml create mode 100644 Documentation/devicetree/bindings/pinctrl/ambarella,cv7= 5-pinctrl.yaml create mode 100644 Documentation/devicetree/bindings/serial/ambarella,uart= .yaml create mode 100644 Documentation/devicetree/bindings/soc/ambarella/ambarel= la,sec-scratchpad.yaml create mode 100644 arch/arm64/boot/dts/ambarella/Makefile create mode 100644 arch/arm64/boot/dts/ambarella/cv75-evk.dts create mode 100644 arch/arm64/boot/dts/ambarella/cv75.dtsi create mode 100644 drivers/clk/ambarella/Kconfig create mode 100644 drivers/clk/ambarella/Makefile create mode 100644 drivers/clk/ambarella/ccu-cv75.c create mode 100644 drivers/clk/ambarella/ccu_common.c create mode 100644 drivers/clk/ambarella/ccu_common.h create mode 100644 drivers/clk/ambarella/ccu_mux_div.c create mode 100644 drivers/clk/ambarella/ccu_mux_div.h create mode 100644 drivers/clk/ambarella/ccu_pll.c create mode 100644 drivers/clk/ambarella/ccu_pll.h create mode 100644 drivers/pinctrl/pinctrl-ambarella.c create mode 100644 drivers/tty/serial/ambarella_uart.c create mode 100644 include/dt-bindings/clock/ambarella,cv75-clock.h create mode 100644 include/dt-bindings/pinctrl/ambarella,pinctrl.h -- 2.34.1 NOTE: This email (including attachments) contain Ambarella Proprietary and/= or Confidential Information and is intended solely for the use of the indiv= idual(s) to whom it is addressed. Any unauthorized review, use, disclosure,= distribute, copy, or print is prohibited. If you are not an intended recip= ient, please contact the sender by reply email and destroy all copies of th= e original message. Thank you.