linux-kernel - Re: [PATCH 4/8] arm64: dts: add NXP S32G2 support

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Date:   Sat, 21 Aug 2021 15:20:30 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Chester Lin <clin@...e.com>
Cc:     Andreas Färber <afaerber@...e.de>,
        Rob Herring <robh+dt@...nel.org>, s32@....com,
        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,
        radu-nicolae.pirea@....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 4/8] arm64: dts: add NXP S32G2 support

On Sat, 21 Aug 2021 13:39:04 +0100,
Chester Lin <clin@...e.com> wrote:
> 
> The following log shows that the "Last" bit (GICR_TYPER[4]) of RD at
> 508e0000 has been set.
> 
> localhost:~ # dmesg | grep GIC
> [    0.000000] CPU features: detected: GIC system register CPU interface
> [    0.000000] GICv3: 544 SPIs implemented
> [    0.000000] GICv3: 0 Extended SPIs implemented
> [    0.000000] GICv3: Distributor has no Range Selector support
> [    0.000000] GICv3: 16 PPIs implemented
> [    0.000000] GICv3: CPU0: found redistributor 0 region 0:0x0000000050880000 last: 0
> [    0.078745] GICv3: CPU1: found redistributor 1 region 0:0x00000000508a0000 last: 0
> [    0.089598] GICv3: CPU2: found redistributor 100 region 0:0x00000000508c0000 last: 0
> [    0.100395] GICv3: CPU3: found redistributor 101 region 0:0x00000000508e0000 last: 1

Looks convincing enough. Trimming the RD range to 512kB is then the
right thing to do.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.