linux-kernel - Re: [PATCH] powerpc/44x/fsp2: correct dtb reg property for /sdhci@...c0000

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Message-Id: <20170721125427.77668-1-ivan@de.ibm.com>
Date:   Fri, 21 Jul 2017 15:54:27 +0300
From:   Ivan Mikhaylov <ivan@...ibm.com>
To:     Ian Campbell <ijc@...lion.org.uk>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/44x/fsp2: correct dtb reg property for /sdhci@...c0000

Hi Ian,
>Building the split device-tree tree[0] highlighted that upstream commit
>9eec6cb142bd ("powerpc/44x/fsp2: Add device tree for FSP2 board") introduced
>this warning when building the device tree:
>
>$ make CROSS_COMPILE=powerpc-linux-gnu- ARCH=powerpc fsp2.dtb
>  CHK     scripts/mod/devicetable-offsets.h
>  DTC     arch/powerpc/boot/fsp2.dtb
>arch/powerpc/boot/fsp2.dtb: Warning (reg_format): "reg" property in /sdhci@...c0000 has invalid length (8 bytes) (#address-cells == 2, #size-cells == 1)
>
>This commit adds the second adress cell as zeroes to resolve the warning. Note:
>I have no access to or information about this platform so this is purely a
>guess as to the fix. An alternative would be to adjust #address-cells, but
>whether that is correct or not depends on the platform.

Yes, this problem exists on this tag but it is already fixed and waiting for
review by this https://patchwork.kernel.org/patch/9819379/ . You can check it
if you want, anyways it will go to powerpc next branch first.

Thank you.