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Re: [PATCH] arc: use little endian accesses

From Vineet Gupta <Vineet.Gupta1@synopsys.com>
Newsgroups linux.kernel
Subject Re: [PATCH] arc: use little endian accesses
Date 2016-03-10 11:00 +0100
Message-ID <rb5xT-53y-1@gated-at.bofh.it> (permalink)
References <raQ5R-2LL-29@gated-at.bofh.it> <rb11g-2cG-17@gated-at.bofh.it> <rb3w5-3HD-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thursday 10 March 2016 01:14 PM, Alexey Brodkin wrote:
>>> For example, serial port driver doesn't work when kernel is build for
>>> arc big endian architecture.
>> Last I tested Big Endian on SDP with 8250 part + 8250 driver it was working fine.
>> I presume this is the systemC model for device and standard 8250 driver and very
>> likely the model is not fixed endian or something.
> Model is indeed little-endian. We build it only once and than changing
> only "nsim_isa_big_endian" property (which changes only CPU core endianess) may use
> it equally well with little- and big-endian builds of Linux kernel.

Can you or Lada provide more details as to exactly what is not working - what
driver to be precise 8250 or dw-8250.
And where exactly the failure shows up. I want to understand this more
Noam told me off list that he has no issues with both big endian ARC + 8250 in
systemc model or silicon.

-Vineet

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Thread

[PATCH] arc: use little endian accesses Lada Trimasova <Lada.Trimasova@synopsys.com> - 2016-03-09 18:30 +0100
  Re: [PATCH] arc: use little endian accesses Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-03-10 06:10 +0100
    Re: [PATCH] arc: use little endian accesses Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-03-10 06:30 +0100
    Re: [PATCH] arc: use little endian accesses Arnd Bergmann <arnd@arndb.de> - 2016-03-10 08:50 +0100
      Re: [PATCH] arc: use little endian accesses Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-03-11 06:20 +0100
    Re: [PATCH] arc: use little endian accesses Alexey Brodkin <Alexey.Brodkin@synopsys.com> - 2016-03-10 08:50 +0100
      Re: [PATCH] arc: use little endian accesses Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-03-10 11:00 +0100
        Re: [PATCH] arc: use little endian accesses Lada Trimasova <Lada.Trimasova@synopsys.com> - 2016-03-10 20:00 +0100
          Re: [PATCH] arc: use little endian accesses Arnd Bergmann <arnd@arndb.de> - 2016-03-10 20:30 +0100
            Re: [PATCH] arc: use little endian accesses Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-03-11 13:50 +0100
              Re: [PATCH] arc: use little endian accesses Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-03-12 05:30 +0100
          Re: [PATCH] arc: use little endian accesses Noam Camus <noamca@mellanox.com> - 2016-03-11 06:30 +0100

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