From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f52.google.com (mail-wr1-f52.google.com [209.85.221.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6B0AD3F4101 for ; Fri, 4 Sep 2026 06:54:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788504856; cv=none; b=SBaARCLrRYNDqcznLfDpoPgTpR/ZIqU5mzh13tlz2SLqQCb4Ll0ELuyZA6nyaW74uX7O8llX7JB7xuJ1JZbduNAS4fyHtTBTNZ3gIw7pMGQrxGLdNZWkGTQX/21fGd/2ZoXQlG8bHNIhFE8HnbzuxNqpLPIuQXS7d3Ps5atOmGY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788504856; c=relaxed/simple; bh=03G0YYbfLRmZaX1/Bj43h7t8H/IhGZbMFVeL2gNKUXI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=dTzXuF3VGBKpuQSFBJD/T2PeEeLN140BDqhJgI95lOnc2gZn5iZuTkVupVEcfHbFRjqsRKz1Wh4FML4gQZoxAxHL23ArGmsSsQCcCpnCnWjvd5IT6l6+setJX79rR7RyHZV/h+MWxV7IxIu6yX7WNeDTrsmK7Q2wRHUpLBTekFU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre.com header.i=@baylibre.com header.b=bBnDbBPF; arc=none smtp.client-ip=209.85.221.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre.com header.i=@baylibre.com header.b="bBnDbBPF" Received: by mail-wr1-f52.google.com with SMTP id ffacd0b85a97d-4843e9c5960so650307f8f.0 for ; Thu, 03 Sep 2026 23:54:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre.com; s=google; t=1788504850; x=1789109650; darn=vger.kernel.org; h=content-transfer-encoding:content-type:mime-version:message-id:date :references:in-reply-to:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=opFAzeC6yLs6Vrjv44QhUvB3fomfpvweq22z4f5Cs58=; b=bBnDbBPFnOW6oBZTGmW3/9CRc6kvk3PnNHfYh0AJWxdIjGk8fCg0ck1y7eNagtEdTn jVPghTyf6TsAsX2vtfTrX4MuUy4vb6J1ehU19+Zi1H8Jiu40zagzWp287HlrrYQejAlD XlwlKyYJ1yyJ7qb4bKoQywDq1CjZSjyGkuMvycGON/13JECebZ9NDNGAURsgGk9Mzajr yWK/tX3P54I0iX5dr6Bm5fUPlFvcuYrBsN6fU+aAdQfDkUAde4bB2vfO+bIvUcX396L/ qE7i4z/jvmcabOYO4rKMJhaAQv/nJzVRG27umiEO0Zz1/nJoy+3hK1PfiqGvlbOcg7tQ FgvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788504850; x=1789109650; h=content-transfer-encoding:content-type:mime-version:message-id:date :references:in-reply-to:subject:cc:to:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=opFAzeC6yLs6Vrjv44QhUvB3fomfpvweq22z4f5Cs58=; b=jXGRqs7ylpYxPAeQRTi1pYLEe4GMUvUvaRq8sUK+P0ePkNq/ETsJWdlLFsbkDhK3EB 3BhbLYYYo7+YOVQn75uYzOxR4wMVZd9Zpor51CZlwhlQ1nd3BfPAa8tR9r2mCyv1bzT1 uTo30DLggHAFNgWlEjfmCGlHdAfqIfXEiFZ3/1f3cj8a5zEQOmhE7y4p/MJdLZl7/sbn sPZxrogwpx8oXoRIpeRGvTfh3hpmxqzA8PcbJcg9EClXNd13V5x7fKqrqg1eFQM1o+0E j4xdmNANIewqp4z02yl+JgNT3WaaFXLZEfyt1hO65hNVj5AFJdYuQvOSzejcBYSoK/On GLeg== X-Forwarded-Encrypted: i=1; AKwUvBw1otKBTJ8SGYVfHWjUZRJzTVG0r6Nai9gSRuj24CdoN2AxjtJkjxtTsJndyqJU6M5k+me7tH1bdC9x0Ko=@vger.kernel.org X-Gm-Message-State: AFuF++n1HXdLtx3hUbuC98xxnLd1+UefHF9TyyPtQWtpbdzrGw8fmvxp ePmvRDBLfSvsKtGezURTQNm6scVZKta7Tk5WBNXD3eODKPBr3s5LZMg95RA692jiT4w= X-Gm-Gg: AYBFou3nexrBGsD2/Z4mdpJUbDDGftxirKHZ9TdokKEwn9pVnMjuSmlbOGMlBg0C3UP 7JZ1pvjWugP/uPgLD5eofOZ+pb8My4GHGnfZSPOpN1LSzQvDh3Z38/q+bEq9Zd/06YJUyMdMXC9 FPqtAhWdJs3yDnN0i40Gnlc9XpthuutKZNOVm5dXSMl63HqCYJK877n0ikkqLsQAzjufQI9lKPX O9MK4KgTK/lVb5X4E6jB79SrSmK3MfpBtizh/IWDm+NZviKyrgPQApbNYLT3YWsn+TfOoOlNygB iwEzxkNhZRnU5SPPiQH2X2q7RfjWesz/wldyPZe5OlBtjEUVp/QpNr/0ZsVPMSQcO+3R6D0Ycwa DDKBbq/0YHq0raKcrg9F0Lq01tnL2a8gsWyFTPLYdPdZmHKO7bKCSbAXzE7mA1TalUiKrMOSQTJ H4jDMC4cWSTJNgGTGyPqxkgQQMNdp1E0+5b1B7XaQxxC7os+1+z8VH/j0rJaoBzujFIDAqXVr1y dTfwFo= X-Received: by 2002:a05:6000:4a0b:b0:485:8c16:5ef2 with SMTP id ffacd0b85a97d-4858c16610fmr1044275f8f.44.1788504849840; Thu, 03 Sep 2026 23:54:09 -0700 (PDT) Received: from localhost (82-67-6-57.subs.proxad.net. [82.67.6.57]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-485883c5bc5sm4347121f8f.24.2026.09.03.23.54.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 23:54:08 -0700 (PDT) From: Jerome Brunet To: Long Zhao via B4 Relay , Arnd Bergmann , Krzysztof Kozlowski , Alexandre Belloni , soc@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Long Zhao , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Turquette , Stephen Boyd , Linus Walleij , Bartosz Golaszewski , Greg Kroah-Hartman , Jiri Slaby , Andy Shevchenko , Ilpo =?utf-8?Q?J=C3=A4rvi?= =?utf-8?Q?nen?= , Catalin Marinas , Will Deacon , Long Zhao , Lee Jones , mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski Subject: Re: [PATCH v6 00/13] Ambarella CV75 SoC minimal bring-up In-Reply-To: <20260904-cv75-v5-v6-0-e918514cb3b1@ambarella.com> References: <20260904-cv75-v5-v6-0-e918514cb3b1@ambarella.com> Date: Fri, 04 Sep 2026 08:54:03 +0200 Message-ID: <1jwlt1ld6c.fsf@starbuckisacylon.baylibre.com> 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: quoted-printable On ven. 04 sept. 2026 at 14:38, Long Zhao via B4 Relay wrote: > This series adds minimal Ambarella CV75 support for early bring-up with > a serial console: DT bindings, RCT/CCU clocks, pinctrl, PL061 GPIO via > gpio-regmap, 8250_dw UART quirks, ARCH_AMBARELLA, CV75 EVK DT, and > MAINTAINERS. > > This is a single unified series. Please apply via the SoC tree; > subsystem maintainers are Cc'd for their pieces. > > Verified with: > - scripts/checkpatch.pl --strict (0 errors) > - make dt_binding_check DT_SCHEMA_FILES=3Dambarella:pl061-gpio.yaml:sysco= n.yaml:snps-dw-apb-uart.yaml > - make CHECK_DTBS=3Dy ambarella/cv75-evk.dtb > - arm64 build of new drivers/DTS > - CV75 EVK: console via 8250_dw (dw-apb-uart); GPIO edge IRQ > (gpio-hammer / gpio-event-mon) > > Signed-off-by: Long Zhao > --- > Changes in v6: > - gpio: convert gpio-pl061 data path to gpio-regmap; keep PL061 irqchip > (Andy, Linus). Add write_data_after_dir + girq helpers to gpio-regmap. > Ambarella layout uses JEP106 periphid 0x000e8061; no AFSEL clearing in > the GPIO driver; Ambarella skips unverified GPIO PM save/restore > - serial: restore 8250_dw Ambarella quirks from v3; drop standalone > 8250_ambarella (Andy). Commit message clarifies Ambarella IP with a > DW-like register map needing only a thin quirk. Binding under > snps-dw-apb-uart; DT uses ambarella,cv75-uart + snps,dw-apb-uart with > reg-shift/reg-io-width > - clock/RCT: document #reset-cells (Krzysztof); soft-reset ID header and > reset provider deferred (no resets=3D consumers in this series) > - arm64/Kconfig: do not select ARM_PSCI / HAVE_ARM_ARCH_TIMER (Sashiko) > - pinctrl: no Ambarella suspend/resume claim without validated PM > > Link to v5: > https://lore.kernel.org/r/20260818-cv75-v5-v5-0-7bbb12f0360f@ambarella.com > Link to v2: > https://lore.kernel.org/r/20260806-longzhao-upstream-cv75-v2-v2-0-6b09707= c5fe9@ambarella.com > Link to v3-A: > https://lore.kernel.org/r/20260813-cv75-v3-a-v3-0-cfdd20b1b4dd@ambarella.= com > Link to v3-B: > https://lore.kernel.org/r/20260813-cv75-v3-b-v3-0-1d82e18da09b@ambarella.= com > Link to v3-C: > https://lore.kernel.org/r/20260813-cv75-v3-c-v3-0-9352b3fd6026@ambarella.= com > Link to v4-B: > https://lore.kernel.org/r/20260814-cv75-v4-b-v4-0-622e63153d97@ambarella.= com > No change log ? > To: Arnd Bergmann > To: Krzysztof Kozlowski > To: Alexandre Belloni > To: soc@lists.linux.dev > To: linux-arm-kernel@lists.infradead.org > Cc: Rob Herring > Cc: Krzysztof Kozlowski > Cc: Conor Dooley > Cc: Michael Turquette > Cc: Stephen Boyd > Cc: Linus Walleij > Cc: Bartosz Golaszewski > Cc: Greg Kroah-Hartman > Cc: Jiri Slaby > Cc: Andy Shevchenko > Cc: Ilpo J=C3=A4rvinen > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Long Zhao > Cc: Lee Jones > Cc: mfd@lists.linux.dev > Cc: devicetree@vger.kernel.org > Cc: linux-clk@vger.kernel.org > Cc: linux-gpio@vger.kernel.org > Cc: linux-serial@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > > --- > Long Zhao (13): > dt-bindings: arm: add Ambarella CV75 platforms > dt-bindings: mfd: syscon: add Ambarella CV75 secure scratchpad > dt-bindings: clock: add Ambarella CV75 RCT > dt-bindings: pinctrl: add Ambarella CV75 pinctrl > dt-bindings: gpio: pl061: add Ambarella CV75 variant > dt-bindings: serial: snps-dw-apb-uart: add ambarella,cv75-uart > clk: ambarella: add CV75 CCU driver > gpio: regmap: support write_data_after_dir and girq > gpio: pl061: use gpio-regmap and add Ambarella layout > pinctrl: ambarella: add CV75 pin controller > serial: 8250_dw: add Ambarella CV75 quirks > arm64: ambarella: add ARCH_AMBARELLA and CV75 EVK DT > MAINTAINERS: add ARM/AMBARELLA SoC support > > .../devicetree/bindings/arm/ambarella.yaml | 24 + > .../bindings/clock/ambarella,cv75-rct.yaml | 64 ++ > .../devicetree/bindings/gpio/pl061-gpio.yaml | 32 +- > Documentation/devicetree/bindings/mfd/syscon.yaml | 1 + > .../bindings/pinctrl/ambarella,cv75-pinctrl.yaml | 239 +++++++ > .../bindings/serial/snps-dw-apb-uart.yaml | 1 + > .../devicetree/bindings/vendor-prefixes.yaml | 2 + > MAINTAINERS | 14 + > arch/arm64/Kconfig.platforms | 6 + > 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 | 177 +++++ > arch/arm64/configs/defconfig | 1 + > drivers/clk/Kconfig | 1 + > drivers/clk/Makefile | 1 + > drivers/clk/ambarella/Kconfig | 13 + > 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 | 234 +++++++ > drivers/clk/ambarella/ccu_mux_div.h | 35 + > drivers/clk/ambarella/ccu_pll.c | 421 ++++++++++++ > drivers/clk/ambarella/ccu_pll.h | 70 ++ > drivers/gpio/Kconfig | 2 + > drivers/gpio/gpio-pl061.c | 342 +++++---- > drivers/gpio/gpio-regmap.c | 24 +- > drivers/pinctrl/Kconfig | 15 + > drivers/pinctrl/Makefile | 2 + > drivers/pinctrl/pinctrl-ambarella-cv75.c | 561 +++++++++++++++ > drivers/pinctrl/pinctrl-ambarella.c | 761 +++++++++++++++= ++++++ > drivers/pinctrl/pinctrl-ambarella.h | 50 ++ > drivers/tty/serial/8250/8250_dw.c | 34 + > include/dt-bindings/clock/ambarella,cv75-rct.h | 15 + > include/linux/amba/bus.h | 1 + > include/linux/gpio/regmap.h | 13 + > 37 files changed, 3439 insertions(+), 138 deletions(-) That is a lot of stuff mixed into a single series that could easily split > --- > base-commit: 34cf6dafc47441dfb6b356a095b89c3585a93714 > change-id: 20260818-cv75-v5-9e2039b349bc > > Best regards, > --=20=20 > Long Zhao > > --=20 Jerome