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SubjectRe: [PATCH v2 0/3] Add MIPS CDMM bus support
Hi,

On 02/02/15 11:45, James Hogan wrote:
> This patchset adds basic support for the MIPS Common Device Memory Map
> Memory (CDMM) region in the form of a bus in the standard Linux device
> model.

It'd be great to get these patches upstream for v4.1 via the MIPS tree
along with my other two related patchsets (MIPS: Allow shared IRQ for
timer & perf counter, and Add MIPS EJTAG Fast Debug Channel TTY driver).

Greg: Since this is a new bus I suspect I need your Ack/Review first?

Btw, more info about CDMM can be found here:
http://www.linux-mips.org/wiki/CDMM

And a git branch containing the latest version of all 3 patchsets
(basically just rebased on v4.0-rc1 to resolve conflicts) can be found
here:
git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips.git fdc

Thanks
James

>
> Since the CDMM region is a feature of the MIPS architecture (since
> around MIPSr2) the first patch adds the necessary definitions and
> probing to arch/mips.
>
> The second patch adds the actual bus driver (see that patch for lots
> more info).
>
> The final patch just enables CDMM to work on Malta.
>
> Futher patches will follow soon to add TTY/Console/KGDB support for the
> EJTAG Fast Debug Channel (FDC) device which is found in the CDMM region.
>
> Changes in v2:
> - Fix typo in definition of MIPS_CPU_CDMM, s/0ll/ull (Maciej).
> - Fix some checkpatch errors.
> - Correct CDMM name in various places. It is "Common Device Memory Map",
> rather than "Common Device Mapped Memory" (which for some reason had
> got stuck in my head).
>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-mips@linux-mips.org
>
> James Hogan (3):
> MIPS: Add arch CDMM definitions and probing
> MIPS: Add CDMM bus support
> MIPS: Malta: Implement mips_cdmm_phys_base()
>
> arch/mips/include/asm/cdmm.h | 87 +++++
> arch/mips/include/asm/cpu-features.h | 4 +
> arch/mips/include/asm/cpu.h | 1 +
> arch/mips/include/asm/mipsregs.h | 11 +
> arch/mips/kernel/cpu-probe.c | 2 +
> arch/mips/mti-malta/malta-memory.c | 7 +
> drivers/bus/Kconfig | 13 +
> drivers/bus/Makefile | 1 +
> drivers/bus/mips_cdmm.c | 711 +++++++++++++++++++++++++++++++++++
> include/linux/mod_devicetable.h | 8 +
> scripts/mod/devicetable-offsets.c | 3 +
> scripts/mod/file2alias.c | 16 +
> 12 files changed, 864 insertions(+)
> create mode 100644 arch/mips/include/asm/cdmm.h
> create mode 100644 drivers/bus/mips_cdmm.c
>

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