linux-kernel - Re: [PATCH 5/8] arm64: dts: s32g2: add serial/uart support

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Message-ID: <8a38d66032f875d35834e50943aa02786e2a0517.camel@oss.nxp.com>
Date:   Fri, 13 Aug 2021 12:54:53 +0300
From:   "Radu Nicolae Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com>
To:     Andreas Färber <afaerber@...e.de>,
        Chester Lin <clin@...e.com>, Rob Herring <robh+dt@...nel.org>,
        s32@....com
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-serial@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Stefan Riedmueller <s.riedmueller@...tec.de>,
        Matthias Schiffer <matthias.schiffer@...tq-group.com>,
        Li Yang <leoyang.li@....com>,
        Fabio Estevam <festevam@...il.com>,
        Matteo Lisi <matteo.lisi@...icam.com>,
        Frieder Schrempf <frieder.schrempf@...tron.de>,
        Tim Harvey <tharvey@...eworks.com>,
        Jagan Teki <jagan@...rulasolutions.com>,
        catalin-dan.udma@....com, bogdan.hamciuc@....com,
        bogdan.folea@....com, ciprianmarian.costea@....com,
        ghennadi.procopciuc@....com,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Ivan T . Ivanov" <iivanov@...e.de>, "Lee, Chun-Yi" <jlee@...e.com>
Subject: Re: [PATCH 5/8] arm64: dts: s32g2: add serial/uart support

Hi Andreas
On Thu, 2021-08-12 at 19:42 +0200, Andreas Färber wrote:
> Hi Chester et al.,
> 
> On 05.08.21 08:54, Chester Lin wrote:
> > Add serial/uart support for NXP S32G2.
> 
> You might mention here that (following our initial stub) this commit
> is
> now apparently based on the CodeAurora BSP branch foo (and therefore
> adding its last-year copyright below and separate from 4/8).
> 
> > 
> 
> @NXP: If there are downstream Signed-off-bys that you would like to
> see
> included for this portion here, please speak up.

Larisa signed-off should be added.
Signed-off-by: Larisa Grigore <larisa.grigore@....com>

> 
> > Signed-off-by: Chester Lin <clin@...e.com>
> > ---
> >  arch/arm64/boot/dts/freescale/s32g2.dtsi | 31
> > ++++++++++++++++++++++++
> >  1 file changed, 31 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > index 3321819c1a2d..0076eacad8a6 100644
> > --- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> > @@ -1,6 +1,7 @@
> >  // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
> >  /*
> >   * Copyright (c) 2021 SUSE LLC
> > + * Copyright 2017-2020 NXP
> 
> @NXP: Should this be updated to include 2021 from your latest BSP
> releases? Do you want it visually aligned by adding the ASCII-art?

Yes for both questions. The copyright year sould be updated to 2021 and
should be visually aligned.

> 
> >   */
> >  
> >  #include <dt-bindings/interrupt-controller/arm-gic.h>
> > @@ -11,6 +12,12 @@ / {
> >         #address-cells = <2>;
> >         #size-cells = <2>;
> >  
> > +       aliases {
> > +               serial0 = &uart0;
> > +               serial1 = &uart1;
> > +               serial2 = &uart2;
> > +       };
> 
> Note: In the past there had been controversies as to whether to
> define
> aliases globally for a SoC or in a .dts specific to a board's usage.
> In this case it does not seem to matter much, as uart0 is being used
> as
> console on the reference boards.
> 
> > +
> >         cpus {
> >                 #address-cells = <1>;
> >                 #size-cells = <0>;
> > @@ -82,6 +89,30 @@ soc {
> >  
> >                 ranges;
> >  
> > +               uart0: serial@...c8000 {
> > +                       compatible = "fsl,s32g2-linflexuart",
> > +                                    "fsl,s32v234-linflexuart";
> > +                       reg = <0 0x401c8000 0 0x3000>;
> > +                       interrupts = <GIC_SPI 82
> > IRQ_TYPE_EDGE_RISING>;
> > +                       status = "disabled";
> > +               };
> > +
> > +               uart1: serial@...cc000 {
> > +                       compatible = "fsl,s32g2-linflexuart",
> > +                                    "fsl,s32v234-linflexuart";
> > +                       reg = <0 0x401cc000 0 0x3000>;
> > +                       interrupts = <GIC_SPI 83
> > IRQ_TYPE_EDGE_RISING>;
> > +                       status = "disabled";
> > +               };
> > +
> > +               uart2: serial@...bc000 {
> > +                       compatible = "fsl,s32g2-linflexuart",
> > +                                    "fsl,s32v234-linflexuart";
> > +                       reg = <0 0x402bc000 0 0x3000>;
> > +                       interrupts = <GIC_SPI 84
> > IRQ_TYPE_EDGE_RISING>;
> > +                       status = "disabled";
> > +               };
> > +
> >                 gic: interrupt-controller@...00000 {
> >                         compatible = "arm,gic-v3";
> >                         #interrupt-cells = <3>;
> 
> Regards,
> Andreas
>