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Re: [PATCH] Add MIPS64R2 core support.

To: Sergei Shtylyov <>
Subject: Re: [PATCH] Add MIPS64R2 core support.
From: Leonid Yegoshin <>
Date: Tue, 10 Apr 2012 12:09:42 -0700
Cc: "Steven J. Hill" <>, <>, <>
In-reply-to: <>
References: <> <>
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On 04/10/2012 04:49 AM, Sergei Shtylyov wrote:
From: "Steven J. Hill"<>

+config 64BIT_PHYS_ADDR
+    bool "Kernel supports 64 bit physical addresses" if EXPERIMENTAL
+    depends on 64BIT

This option is selected on 32-bit CPUs like Alchemy, which has 36-bit physical address. It will cause a warning about unmet

Just verified - selected Alchemy and DB1000 board and got

# CONFIG_64BIT is not set


I also want to say that NetLogic Microsystems web site indicates that some of Alchemy CPU has only 14 bit DDR/SDRAM address, for exam - Au1550 ( but arch/mips/configs/db1550_defconfig (and pb1550) choses 64BIT_PHYS_ADDR too. Seems like something wrong here.

- Leonid.

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