From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B970B446067; Thu, 13 Aug 2026 09:57:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786615031; cv=none; b=UAeKzHuX2WDwGaEzacrEIivUWHnjbcT5yIigdH5Atf+y7QFMBP/oxIPKoS2jLpROtffZzKsgM/WypxwmF3JmXrypQCJhxEdXxfOV+JHv3f8l5GNBVudSosller4qnqk/7M7LdvU+qQOYli24lLnC9+ZAxPT7a5tmd2R7XiQAlf8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786615031; c=relaxed/simple; bh=MGxW8mqYV5zxZ2nhKGBjrsUB+IauzQp8VHtemLsvom8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qMu1MyCccfKwvlSn8Iqhn944bkobTCNfH598P1hKctSfv1sG0tzBF1EF1Zth3NYPcA7kMSx2h4nVNrcPYPElCmzeSCEHUgk08+u9s8JsoQ8zxXaEc8YNOZC9jYuVqk3PYHMRIY1JjnXBh7jT2/2f6fPcWHurV3LwZ4kPmjB8LqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BWrb0wHi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BWrb0wHi" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5FA51C2BCFF; Thu, 13 Aug 2026 09:57:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1786615031; bh=MGxW8mqYV5zxZ2nhKGBjrsUB+IauzQp8VHtemLsvom8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=BWrb0wHiEbAcCNJLBTLV+WkQmD4v3lQwr1M2Pyr1xpoSimS0OqPP7t6oN52LZtOrX k/gZAE04FpxwvKxfaH3FFK6PAH4JVRvjbaIUTlXJ6pXQ4uummWnjldCDiWcxzgcba6 Yf4mA5PxSa8p/sTQ820bhecKeTtYXoEr25Tyqn4kTTm2GMk3NuCF2UZTuxXjU4P6mP YC3LnBZ+I2HP5VX1ssm7K6rg3ttg2ZEz/QZ9pp4NiytZpQ+IInvxLr0LquPZzngrNH /TuXraeR8VyXoYVlZ+8hg67kVzw9wtXWnn5xTvDiHgTCYqWSWYz+h5Sejv6obbiSed EHadNVWmVbPvw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C9C9C5DF67; Thu, 13 Aug 2026 09:57:11 +0000 (UTC) From: Long Zhao via B4 Relay Date: Thu, 13 Aug 2026 17:56:16 +0800 Subject: [PATCH v3 5/6] arm64: ambarella: add ARCH_AMBARELLA and CV75 EVK DT Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260813-cv75-v3-a-v3-5-cfdd20b1b4dd@ambarella.com> References: <20260813-cv75-v3-a-v3-0-cfdd20b1b4dd@ambarella.com> In-Reply-To: <20260813-cv75-v3-a-v3-0-cfdd20b1b4dd@ambarella.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Turquette , Stephen Boyd , Catalin Marinas , Will Deacon , Arnd Bergmann , Alexandre Belloni , Linus Walleij Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, soc@lists.linux.dev, Long Zhao X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1786615029; l=8142; i=longzhao@ambarella.com; s=20260730; h=from:subject:message-id; bh=y0qjOUV7DPDfe9Di6LtDKb/6xCPt3g9z1X5V+Ta6i/0=; b=R1bPvbBR9xTj/hGMduj897ST/rvX8BW1QXg6GPmmq+IiqeNHC+pHFvcIP4cf4Fwk7zIj+iwCE NtgKzoKXkCJAvOytP99FmbNw/sNZEWVIJfukbWm+AfzIGY0kWNLA5sB X-Developer-Key: i=longzhao@ambarella.com; a=ed25519; pk=/xGhPTOX0/eYsyTWzyjjgAIW1Z/YD+IlnOnvcdRozow= X-Endpoint-Received: by B4 Relay for longzhao@ambarella.com/20260730 with auth_id=903 X-Original-From: Long Zhao Reply-To: longzhao@ambarella.com From: Long Zhao Enable ARCH_AMBARELLA and add a minimal CV75 SoC / EVK device tree for console bring-up with the RCT clocks, UART, pinctrl and GPIO banks. Signed-off-by: Long Zhao --- 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 | 178 +++++++++++++++++++++++++++++ arch/arm64/configs/defconfig | 1 + 6 files changed, 222 insertions(+) diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms index d2acfac73003..166430ddb3c9 100644 --- a/arch/arm64/Kconfig.platforms +++ b/arch/arm64/Kconfig.platforms @@ -26,6 +26,15 @@ config ARCH_SUNXI help This enables support for Allwinner sunxi based SoCs like the A64. +config ARCH_AMBARELLA + bool "Ambarella SoC family" + select ARM_PSCI + select HAVE_ARM_ARCH_TIMER + select PINCTRL + select PINCTRL_AMB + help + This enables support for the ARM64 based Ambarella SoCs like CV75. + config ARCH_ALPINE bool "Annapurna Labs Alpine platform" select ALPINE_MSI if PCI diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile index fc726b215f12..f1709eb5d915 100644 --- a/arch/arm64/boot/dts/Makefile +++ b/arch/arm64/boot/dts/Makefile @@ -4,6 +4,7 @@ subdir-y += airoha subdir-y += allwinner subdir-y += altera subdir-y += amazon +subdir-y += ambarella subdir-y += amd subdir-y += amlogic subdir-y += apm diff --git a/arch/arm64/boot/dts/ambarella/Makefile b/arch/arm64/boot/dts/ambarella/Makefile new file mode 100644 index 000000000000..ddca3d7b18cc --- /dev/null +++ b/arch/arm64/boot/dts/ambarella/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +dtb-$(CONFIG_ARCH_AMBARELLA) += cv75-evk.dtb diff --git a/arch/arm64/boot/dts/ambarella/cv75-evk.dts b/arch/arm64/boot/dts/ambarella/cv75-evk.dts new file mode 100644 index 000000000000..42a0fe24b83b --- /dev/null +++ b/arch/arm64/boot/dts/ambarella/cv75-evk.dts @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Ambarella CV75 EVK board + */ + +/dts-v1/; + +#include "cv75.dtsi" + +/ { + model = "Ambarella CV75 EVK Board"; + compatible = "ambarella,cv75-evk", "ambarella,cv75"; + + aliases { + serial0 = &uart0; + }; + + chosen { + stdout-path = &uart0; + }; + + memory@200000 { + device_type = "memory"; + reg = <0x0 0x00200000 0x0 0x07e00000>; + }; +}; + +&uart0 { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/ambarella/cv75.dtsi b/arch/arm64/boot/dts/ambarella/cv75.dtsi new file mode 100644 index 000000000000..994eac6728ce --- /dev/null +++ b/arch/arm64/boot/dts/ambarella/cv75.dtsi @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Ambarella CV75 SoC + * + * Boot peripheral: UART0 console. + * Clocks: a single ambarella,cv75-rct provider. + */ + +#include +#include + +/ { + compatible = "ambarella,cv75"; + interrupt-parent = <&gic>; + #address-cells = <2>; + #size-cells = <2>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + compatible = "arm,cortex-a76"; + device_type = "cpu"; + reg = <0x000>; + enable-method = "psci"; + }; + + cpu@1 { + compatible = "arm,cortex-a76"; + device_type = "cpu"; + reg = <0x100>; + enable-method = "psci"; + }; + }; + + osc: oscillator { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <24000000>; + clock-output-names = "osc"; + }; + + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + + soc { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + ahb@ffe0000000 { + compatible = "simple-bus"; + reg = <0xff 0xe0000000 0x0 0x01000000>; + ranges = <0xe0000000 0xff 0xe0000000 0x01000000>; + #address-cells = <1>; + #size-cells = <1>; + + s_scratchpad_syscon: scratchpad@e002e000 { + compatible = "ambarella,cv75-sec-scratchpad", "syscon"; + reg = <0xe002e000 0x1000>; + }; + }; + + apb@ffe4000000 { + compatible = "simple-bus"; + reg = <0xff 0xe4000000 0x0 0x01000000>; + ranges = <0xe4000000 0xff 0xe4000000 0x01000000>; + #address-cells = <1>; + #size-cells = <1>; + + uart0: serial@e4000000 { + compatible = "ambarella,cv75-uart", + "snps,dw-apb-uart"; + reg = <0xe4000000 0x1000>; + clocks = <&rct CV75_GCLK_UART0>; + interrupts = ; + pinctrl-names = "default"; + pinctrl-0 = <&uart0_pins>; + reg-io-width = <4>; + reg-shift = <2>; + + status = "disabled"; + }; + + pinctrl: pinctrl@e4010000 { + compatible = "ambarella,cv75-pinctrl"; + reg = <0xe4010000 0x1000>; + ambarella,drive-strength-syscon = <&rct>; + ambarella,pull-syscon = <&s_scratchpad_syscon>; + + uart0_pins: uart0-pins { + function = "uart0"; + groups = "uart0"; + }; + }; + + gpio0: gpio@e4013000 { + compatible = "ambarella,cv75-gpio", "arm,primecell"; + reg = <0xe4013000 0x1000>; + clocks = <&rct CV75_GCLK_APB>; + clock-names = "apb_pclk"; + interrupts = ; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pinctrl 0 0 32>; + interrupt-controller; + #interrupt-cells = <2>; + arm,primecell-periphid = <0x00000061>; + }; + + gpio1: gpio@e4014000 { + compatible = "ambarella,cv75-gpio", "arm,primecell"; + reg = <0xe4014000 0x1000>; + clocks = <&rct CV75_GCLK_APB>; + clock-names = "apb_pclk"; + interrupts = ; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pinctrl 0 32 32>; + interrupt-controller; + #interrupt-cells = <2>; + arm,primecell-periphid = <0x00000061>; + }; + + gpio2: gpio@e4015000 { + compatible = "ambarella,cv75-gpio", "arm,primecell"; + reg = <0xe4015000 0x1000>; + clocks = <&rct CV75_GCLK_APB>; + clock-names = "apb_pclk"; + interrupts = ; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pinctrl 0 64 32>; + interrupt-controller; + #interrupt-cells = <2>; + arm,primecell-periphid = <0x00000061>; + }; + }; + + rct: clock-controller@ffed080000 { + compatible = "ambarella,cv75-rct", "syscon"; + reg = <0xff 0xed080000 0x0 0x1000>; + clocks = <&osc>; + clock-names = "osc"; + #clock-cells = <1>; + assigned-clocks = <&rct CV75_GCLK_UART0>; + assigned-clock-parents = <&osc>; + assigned-clock-rates = <24000000>; + }; + + gic: interrupt-controller@fff0101000 { + compatible = "arm,gic-400"; + reg = <0xff 0xf0101000 0x0 0x1000>, + <0xff 0xf0102000 0x0 0x2000>, + <0xff 0xf0104000 0x0 0x2000>, + <0xff 0xf0106000 0x0 0x2000>; + interrupt-controller; + #interrupt-cells = <3>; + #address-cells = <0>; + #size-cells = <1>; + interrupts = ; + }; + }; + + timer { + compatible = "arm,armv8-timer"; + interrupts = , + , + , + , + ; + }; +}; diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index ad3bd3d9507b..454f07a6a6a6 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -36,6 +36,7 @@ CONFIG_CRASH_DUMP=y CONFIG_ARCH_ACTIONS=y CONFIG_ARCH_AIROHA=y CONFIG_ARCH_SUNXI=y +CONFIG_ARCH_AMBARELLA=y CONFIG_ARCH_ALPINE=y CONFIG_ARCH_APPLE=y CONFIG_ARCH_ARTPEC=y -- 2.34.1