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 224137EEEF; Tue, 30 Jan 2024 22:56:56 +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=1706655417; cv=none; b=NIgglfb00EISV5/W1GLRbrAk7vvMAKDmtcAYgqFKYklm34VHLB26AYH/BoeDrA0Bl+kO8616E8kd+ssZDFdzUuBXUSvoLAu0W2F2nm9BwR1YIu12GqyOoUPs7WVbtZIDBF7U4ArEh8TKwmKbJc/S2GkU19xyWlJW5AQ03LNXNHk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706655417; c=relaxed/simple; bh=VdU6if5rHUMAoE64rsagsgfaJZ9LSIB1pT2VMNKYYv0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=RiPcFvLCW7zAqkIgcGNAQQFGFfHIFYWXWej9OvCxu3TyXNnUU2PXctfvKz0PB5GlNiYGmk82ZbrRAGNyBK9uf+n0FT15VNdhL4S9PN9yI8QxFQiVVCc+ASu9yB9zM08i+YBe+wMgzQtTvIKPFMk1QbN5NSweHDMH9hTY4yzvzjg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=N8aIbmYb; 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="N8aIbmYb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DF22C433F1; Tue, 30 Jan 2024 22:56:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706655416; bh=VdU6if5rHUMAoE64rsagsgfaJZ9LSIB1pT2VMNKYYv0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=N8aIbmYbXSXUzz5OyjXF3V2Y2TT9ChHKCPaL9WHvH4FEVUrx1FjfoWpyxup97VDjc WaL2DH0GbT8Iiq3NcJSXI6GQ80Ki26ot7TM3fZqiJjpPyO05xT0MEHuwbGjQcVQ5BS V8Wr4Zv9j2lssXNz4uF5INuWm9Z+g4junrxh9erfKwa/enwapQz+lgrrDA6f7wzj0Z GlFUVmW4iF5UhST7Psd0Y1ct0PlPXqnSjNVzrxMcUROEWwkonZ41uDzs3TE6ZYa437 JDcIYoAkMLGHtdRodVmeMsMlBsvSDDN2iNIybKUMpPqtonI5yGl8mqp/RK39FPs7ry t2V7H1fYOMOpQ== Date: Tue, 30 Jan 2024 16:56:54 -0600 From: Rob Herring To: Farouk Bouabid Cc: Conor Dooley , Rob Herring , linux-serial@vger.kernel.org, Heiko Stuebner , linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Greg Kroah-Hartman , Jiri Slaby , Heiko Stuebner , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, quentin.schulz@theobroma-systems.com, Krzysztof Kozlowski Subject: Re: [PATCH v5 1/6] dt-bindings: serial: Add binding for rs485 receiver enable GPIO Message-ID: <170665541359.2569633.3534356334365614400.robh@kernel.org> References: <20240126-dev-rx-enable-v5-0-5d934eda05ca@theobroma-systems.com> <20240126-dev-rx-enable-v5-1-5d934eda05ca@theobroma-systems.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=us-ascii Content-Disposition: inline In-Reply-To: <20240126-dev-rx-enable-v5-1-5d934eda05ca@theobroma-systems.com> On Fri, 26 Jan 2024 18:27:42 +0100, Farouk Bouabid wrote: > From: Heiko Stuebner > > RS485 has two signals to control transmissions "driver enable" (DE) and > "receiver enable" (RE). DE is already handled via the uarts RTS signal > while the RE signal on most implementations doesn't get handled > separately at all. > > As there still will be cases where this is needed though add a gpio > property for declaring this signal pin. > > Signed-off-by: Heiko Stuebner > Signed-off-by: Farouk Bouabid > --- > Documentation/devicetree/bindings/serial/rs485.yaml | 4 ++++ > 1 file changed, 4 insertions(+) > Reviewed-by: Rob Herring