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Message-ID: <20211025091731.GA2001@C02TD0UTHF1T.local>
Date:   Mon, 25 Oct 2021 10:17:31 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Brad Larson <brad@...sando.io>
Cc:     linux-arm-kernel@...ts.infradead.org, arnd@...db.de,
        linus.walleij@...aro.org, bgolaszewski@...libre.com,
        broonie@...nel.org, fancer.lancer@...il.com,
        adrian.hunter@...el.com, ulf.hansson@...aro.org, olof@...om.net,
        linux-gpio@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 11/11] arm64: dts: Add Pensando Elba SoC support

Hi,

On Sun, Oct 24, 2021 at 06:51:56PM -0700, Brad Larson wrote:
> Add Pensando common and Elba SoC specific device nodes
> 
> Signed-off-by: Brad Larson <brad@...sando.io>

[...]

> +	timer {
> +		compatible = "arm,armv8-timer";
> +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>;
> +	};

The GIC_CPU_MASK_SIMPLE() stuff is meant for GICv2, but as below you
have GICv3, where this is not valid, so this should go.

Also, beware that GIC_CPU_MASK_SIMPLE(1) means a single CPU, which
doesn't mak sense for the 16 CPUs you have.

> +		gic: interrupt-controller@...000 {
> +			compatible = "arm,gic-v3";
> +			#interrupt-cells = <3>;
> +			#address-cells = <2>;
> +			#size-cells = <2>;
> +			ranges;
> +			interrupt-controller;
> +			reg = <0x0 0x800000 0x0 0x200000>,	/* GICD */
> +			      <0x0 0xa00000 0x0 0x200000>;	/* GICR */
> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			gic_its: msi-controller@...000 {
> +				compatible = "arm,gic-v3-its";
> +				msi-controller;
> +				#msi-cells = <1>;
> +				reg = <0x0 0x820000 0x0 0x10000>;
> +				socionext,synquacer-pre-its =
> +							<0xc00000 0x1000000>;
> +			};
> +		};

Is there any shared lineage with Synquacer? The commit message didn't
describe this quirk.

Thanks,
Mark.

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