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 1DB6135950 for ; Wed, 20 Aug 2025 04:01:56 +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=1755662517; cv=none; b=EIr/5+AEAf4fFWf90CmHSsDLudSWYhyxwerDAc5/5A/Vkedhn3LdZa3JdlcEhyGm+0xtOM64WhNlwQ9pUhNvZeXwxkjpOgwulUNV6gjHFfXdLkjphzgjjmKeMvRk7pTA8DOX8Pgy/lEa0EnkU7eYwMPKuoFymDB+jgMLU+pOMqM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755662517; c=relaxed/simple; bh=bga9po//tK+jgB9MU+JqQyTe76EkUC+HradMwovUjP0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=c4Coz3Er4LIIRGbnNvKMkHxovFNQEVZopJn1TClJq23OwUfN7d9d106keXFBTwJf+pJH6IWtOBtgu6be7PTkl99FLlreiAhL/7n6wzqB9xrTSBl9O68DxIkZmckx6bsH4vNivSFeNMjKchZawWjCiAHH/4nmaTumIrIl5YWwGnA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qV4Y4X89; 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="qV4Y4X89" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27EBCC4CEEB; Wed, 20 Aug 2025 04:01:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755662516; bh=bga9po//tK+jgB9MU+JqQyTe76EkUC+HradMwovUjP0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=qV4Y4X89aX9+foKS+H27pByR7A/7sCYOca4tL+pPtkmWWMNNauiq5LW5r0mAKc26O f3wCZj+QEGpjjWCcA+XmRs2f0AfWjc/o9n2ecHOjIxnxnS3JNM0nGvL8VJzluRwRh1 6OEBVyPYyxWlMLjm5YiIKE25XP+ytc03MvE+4fCY0g+eHT1OVXFvC0A85Po7iebPDM ATa7bNSyvQlKkltLpl08ZfCpeZL5IugUHoiueua23UcgS0KGQ/24gBm/eqrjT8pmEU J2yE31CDzAP6CharR3WHQmiNrlo2JQKaPcNRbNDwbXZy0A2cqlE5esg67cIz96ZOM1 +KBh1SCTpX63w== Message-ID: <9a3e087c-3a1e-474a-b0ed-c69b5f174c43@kernel.org> Date: Wed, 20 Aug 2025 06:01:52 +0200 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] serial: 8250 dw: clear FIFO before writting LCR To: adriana@arista.com, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.rg Cc: ilpo.jarvinnen@linux.intel.com, andriy.shevchenko@linux.intel.com, gregkh@linuxfoundation.org, john.ogness@linutronix.de References: <20250819191314.3452283-1-adriana@arista.com> Content-Language: en-US From: Jiri Slaby Autocrypt: addr=jirislaby@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 19. 08. 25, 21:13, adriana@arista.com wrote: > This patch is proposing a custom configuration for Synopsys DesignWare > serial to be used by products with associated compatible string in the > device tree. > > The PORT_DWAPB config will be used instead of the default PORT_16550A > which does not include the UART_FCR_CLEAR_RCVR and UART_FCR_CLEAR_XMIT > bits for the FIFO configuration register. Having those flags is necessary > to clear FIFO when the serial port is reconfigured with do_set_termios. How was this tested? I assume it does not even compile. -- js suse labs