From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 51EEE4B95BA; Thu, 1 Oct 2026 12:52:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790859139; cv=none; b=W3vrnJVBy9tyiXy0IMWGa/xC0EFfYo2Xa+7n9Qp1kevRCKUhE2E1PqLrQZy6AVLSTKbVW+DdRdpApLzVbr2Aimp7bv10McXpSucBqnvQ9fZlUdC6xyXu9YyTUmjeSQTqgLB+ALcHnB6LWkdFR0R/zwsdwapH3VJwc9KV5nos1YA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790859139; c=relaxed/simple; bh=wzwl3gw5e+db5oZR4+r5voy+RDCC4J5Putz8q+zjj7c=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=eJ1/5uFKqrly3P6vCPG0lfN737p3GSN7zppJoLgTjkZuvJUIuayYOXXa/uB2TrPQac2tRhMoOJFbo5OaRaNMeIAziONOMhFzjwCN/tXYv3HP3ha1SnatqQWT19Hgf2ZGx82CpiiAkeNU26JDVnZSfb0Z+8tVCp4f90o9dcqObok= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=K2poqIT9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="K2poqIT9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5D3E1F000FF; Thu, 1 Oct 2026 12:52:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790859135; bh=tec5FQuLPRbdVVuUIDCytMknbBana/Hua8s4K23aD0c=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=K2poqIT9ceZq6Ra4TaTezpspNG6viPMERp45zFObidAykvZxZAxoOQIIzK3ssGp/Q CcwazjuaWGcA0ukfuqOP8DNdB4JdI9P43/U/uh6t4wGs5l1U5D3VfcJsaZHbxjZUgv I1xPQL6NDREljq3owZtVIHgwzvv9UWf6XJUC1uWY= Date: Thu, 1 Oct 2026 14:52:09 +0200 From: Greg Kroah-Hartman To: longzhao@ambarella.com Cc: Arnd Bergmann , Krzysztof Kozlowski , Alexandre Belloni , soc@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Turquette , Stephen Boyd , Jerome Brunet , Linus Walleij , Bartosz Golaszewski , Michael Walle , Jiri Slaby , Andy Shevchenko , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , 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 Subject: Re: [PATCH v9 13/15] serial: 8250_dw: add Ambarella CV75 quirks Message-ID: <2026100140-overbite-mundane-fc79@gregkh> References: <20261001-cv75-v5-v9-0-486cc289a4b8@ambarella.com> <20261001-cv75-v5-v9-13-486cc289a4b8@ambarella.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=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20261001-cv75-v5-v9-13-486cc289a4b8@ambarella.com> On Thu, Oct 01, 2026 at 08:41:02PM +0800, Long Zhao via B4 Relay wrote: > From: Long Zhao > > The Ambarella CV75 UART is Ambarella IP, not a Synopsys DesignWare > licensed block. At the register level it is close enough to DW APB UART > that a full custom UART driver is unnecessary: reuse 8250_dw with a > small platform quirk. > > Quirks: > - keep IER ETOI (bit 5) set for RX timeout behaviour > - skip set_rate; baud clock is managed outside the UART block > > Reviewed-by: Linus Walleij > Reviewed-by: Andy Shevchenko > Reviewed-by: Ilpo Järvinen > Signed-off-by: Long Zhao > --- > drivers/tty/serial/8250/8250_dw.c | 32 ++++++++++++++++++++++++++++++++ > 1 file changed, 32 insertions(+) When you submit lots of different subsystem patches all in one series, it's hard, if not impossible, for subsystem maintainers to take them :( thanks, greg k-h