From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Rutland Subject: Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Date: Wed, 3 Feb 2016 17:05:07 +0000 Message-ID: <20160203170506.GE1234@leverpostej> References: <1454436468-4241-1-git-send-email-gregory.clement@free-electrons.com> <1454436468-4241-2-git-send-email-gregory.clement@free-electrons.com> <20160202182842.GD29778@leverpostej> <87egct4trb.fsf@free-electrons.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <87egct4trb.fsf-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Gregory CLEMENT Cc: Jason Cooper , Andrew Lunn , Sebastian Hesselbarth , arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, Catalin Marinas , Will Deacon , Jonathan Corbet , Greg Kroah-Hartman , Jiri Slaby , linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Tejun Heo , Hans de Goede , linux-ide-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Thomas Petazzoni , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Wilson Ding , Nadav Haklai List-Id: linux-ide@vger.kernel.org On Wed, Feb 03, 2016 at 05:56:56PM +0100, Gregory CLEMENT wrote: > Hi Mark, > =20 > On mar., f=C3=A9vr. 02 2016, Mark Rutland wro= te: > >> diff --git a/Documentation/kernel-parameters.txt b/Documentation/k= ernel-parameters.txt > >> index 87d40a72f6a1..198f6bd56e84 100644 > >> --- a/Documentation/kernel-parameters.txt > >> +++ b/Documentation/kernel-parameters.txt > >> @@ -1058,6 +1058,12 @@ bytes respectively. Such letter suffixes ca= n also be entirely omitted. > >> A valid base address must be provided, and the serial > >> port must already be setup and configured. > >> =20 > >> + mvebu_uart, > >> + Start an early, polled-mode console on an some mvebu > >> + SoC (as the Armada-3700) serial port at the specified > >> + address. The serial port must already be setup and > >> + configured. Options are not yet supported. > >> + > > > > Does the the mvebu UART vary between platforms at all? >=20 > I am not sure to undersatnd your question. >=20 > If you asked about the UART used on the other mvebu SoCs then my answ= er > is: on all the other mvebu SoC until now third party IPs were used. Ah, I hadn't realised that. > This one is the first one dedicated to an mevbu SoC and currently onl= y > used on Armada 3700 but I don't know what are the plan for the future > mvebu SoCs. Given that, I think it would be better to use "armada3700_uart=3D" for now, given it doesn't cover all mvebu SoCs. Thanks, Mark. -- To unsubscribe from this list: send the line "unsubscribe devicetree" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Wed, 3 Feb 2016 17:05:07 +0000 Subject: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port In-Reply-To: <87egct4trb.fsf@free-electrons.com> References: <1454436468-4241-1-git-send-email-gregory.clement@free-electrons.com> <1454436468-4241-2-git-send-email-gregory.clement@free-electrons.com> <20160202182842.GD29778@leverpostej> <87egct4trb.fsf@free-electrons.com> Message-ID: <20160203170506.GE1234@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Feb 03, 2016 at 05:56:56PM +0100, Gregory CLEMENT wrote: > Hi Mark, > > On mar., f?vr. 02 2016, Mark Rutland wrote: > >> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt > >> index 87d40a72f6a1..198f6bd56e84 100644 > >> --- a/Documentation/kernel-parameters.txt > >> +++ b/Documentation/kernel-parameters.txt > >> @@ -1058,6 +1058,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. > >> A valid base address must be provided, and the serial > >> port must already be setup and configured. > >> > >> + mvebu_uart, > >> + Start an early, polled-mode console on an some mvebu > >> + SoC (as the Armada-3700) serial port at the specified > >> + address. The serial port must already be setup and > >> + configured. Options are not yet supported. > >> + > > > > Does the the mvebu UART vary between platforms at all? > > I am not sure to undersatnd your question. > > If you asked about the UART used on the other mvebu SoCs then my answer > is: on all the other mvebu SoC until now third party IPs were used. Ah, I hadn't realised that. > This one is the first one dedicated to an mevbu SoC and currently only > used on Armada 3700 but I don't know what are the plan for the future > mvebu SoCs. Given that, I think it would be better to use "armada3700_uart=" for now, given it doesn't cover all mvebu SoCs. Thanks, Mark. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933307AbcBCRFj (ORCPT ); Wed, 3 Feb 2016 12:05:39 -0500 Received: from foss.arm.com ([217.140.101.70]:35694 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757810AbcBCRFh (ORCPT ); Wed, 3 Feb 2016 12:05:37 -0500 Date: Wed, 3 Feb 2016 17:05:07 +0000 From: Mark Rutland To: Gregory CLEMENT Cc: Jason Cooper , Andrew Lunn , Sebastian Hesselbarth , arm@kernel.org, Catalin Marinas , Will Deacon , Jonathan Corbet , Greg Kroah-Hartman , Jiri Slaby , linux-serial@vger.kernel.org, Tejun Heo , Hans de Goede , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Thomas Petazzoni , linux-arm-kernel@lists.infradead.org, Wilson Ding , Nadav Haklai Subject: Re: [PATCH 01/10] serial: mvebu-uart: initial support for Armada-3700 serial port Message-ID: <20160203170506.GE1234@leverpostej> References: <1454436468-4241-1-git-send-email-gregory.clement@free-electrons.com> <1454436468-4241-2-git-send-email-gregory.clement@free-electrons.com> <20160202182842.GD29778@leverpostej> <87egct4trb.fsf@free-electrons.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <87egct4trb.fsf@free-electrons.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 03, 2016 at 05:56:56PM +0100, Gregory CLEMENT wrote: > Hi Mark, > > On mar., févr. 02 2016, Mark Rutland wrote: > >> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt > >> index 87d40a72f6a1..198f6bd56e84 100644 > >> --- a/Documentation/kernel-parameters.txt > >> +++ b/Documentation/kernel-parameters.txt > >> @@ -1058,6 +1058,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. > >> A valid base address must be provided, and the serial > >> port must already be setup and configured. > >> > >> + mvebu_uart, > >> + Start an early, polled-mode console on an some mvebu > >> + SoC (as the Armada-3700) serial port at the specified > >> + address. The serial port must already be setup and > >> + configured. Options are not yet supported. > >> + > > > > Does the the mvebu UART vary between platforms at all? > > I am not sure to undersatnd your question. > > If you asked about the UART used on the other mvebu SoCs then my answer > is: on all the other mvebu SoC until now third party IPs were used. Ah, I hadn't realised that. > This one is the first one dedicated to an mevbu SoC and currently only > used on Armada 3700 but I don't know what are the plan for the future > mvebu SoCs. Given that, I think it would be better to use "armada3700_uart=" for now, given it doesn't cover all mvebu SoCs. Thanks, Mark.