linux-kernel - RE: [PATCH 0/6] tty: serial: lpuart: add imx7ulp support

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Message-ID: <AM4PR0401MB2260B8A8481A967E980E1A1DFFEF0@AM4PR0401MB2260.eurprd04.prod.outlook.com>
Date:   Tue, 9 May 2017 11:13:34 +0000
From:   Andy Duan <fugang.duan@....com>
To:     "A.S. Dong" <aisheng.dong@....com>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "jslaby@...e.com" <jslaby@...e.com>,
        "stefan@...er.ch" <stefan@...er.ch>,
        Mingkai Hu <mingkai.hu@....com>, "Y.B. Lu" <yangbo.lu@....com>,
        "A.S. Dong" <aisheng.dong@....com>
Subject: RE: [PATCH 0/6] tty: serial: lpuart: add imx7ulp support

From: Dong Aisheng <aisheng.dong@....com> Sent: Tuesday, May 09, 2017 3:51 PM
>To: linux-serial@...r.kernel.org
>Cc: linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
>gregkh@...uxfoundation.org; jslaby@...e.com; Andy Duan
><fugang.duan@....com>; stefan@...er.ch; Mingkai Hu
><mingkai.hu@....com>; Y.B. Lu <yangbo.lu@....com>; A.S. Dong
><aisheng.dong@....com>
>Subject: [PATCH 0/6] tty: serial: lpuart: add imx7ulp support
>
>This patch series mainly intends to add imx7ulp support which is also using FSL
>lpuart.
>
>The lpuart in imx7ulp is basically the same as ls1021a. It's also
>32 bit width register, but unlike ls1021a, it's little endian.
>Besides that, imx7ulp lpuart has a minor different register layout from ls1021a
>that it has four extra registers (verid, param, global,
>pincfg) located at the beginning of register map, which are currently not used
>by the driver and less to be used later.
>
>Furthermore, this patch serial also add a new more accurate baud rate
>calculation method as MX7ULP can't divide a suitable baud rate with the
>default setting.
>
>Currently the new baud rate calculation is only enabled on MX7ULP.
>However, i guess the Layerscape may also be able to use it as there seems to
>be no difference in baud rate setting register after checking the Layerscape
>Reference Manual.
>
>As i don't have Layerscape boards, i can't test it, so i only enable it for MX7ULP
>by default to avoid a potential break.
>
>I copied LayerScape guys in this series and hope they can help test later.
>If it works on Layerscape as well, then they can switch to the new setting too
>and totally remove the old stuff.
>
>Dong Aisheng (6):
>  tty: serial: lpuart: introduce lpuart_soc_data to represent SoC
>    property
>  tty: serial: lpuart: add little endian 32 bit register support
>  dt-bindings: serial: fsl-lpuart: add i.MX7ULP support
>  tty: serial: lpuart: add imx7ulp support
>  tty: serial: lpuart: add earlycon support for imx7ulp
>  tty: serial: lpuart: add a more accurate baud rate calculation method
>
> .../devicetree/bindings/serial/fsl-lpuart.txt      |   2 +
> drivers/tty/serial/fsl_lpuart.c                    | 149 ++++++++++++++++++---
> 2 files changed, 136 insertions(+), 15 deletions(-)
>
>--
>2.7.4

The series looks fine.

Acked-by: Fugang Duan <fugang.duan@....com>