[PATCH 1/3] drivers: misc: add omap_hwspinlock driver

Ohad Ben-Cohen ohad at wizery.com
Wed Oct 20 09:00:22 EDT 2010

On Tue, Oct 19, 2010 at 7:16 PM, Kevin Hilman
<khilman at deeprootsystems.com> wrote:
> Ohad Ben-Cohen <ohad at wizery.com> writes:
>> From: Simon Que <sque at ti.com>
>> Add driver for OMAP's Hardware Spinlock module.
>> The OMAP Hardware Spinlock module, initially introduced in OMAP4,
>> provides hardware assistance for synchronization between the
>> multiple processors in the device (Cortex-A9, Cortex-M3 and
>> C64x+ DSP).

>> +     bool "OMAP Hardware Spinlock module"
> Should be tristate


> so it can also be built as a module by default.
> e.g., when building multi-OMAP kernels, no reason or this to be
> built-in.  It can then be loaded as a module on OMAP4 only.

But considering the current built-in use cases (i2c) we would then
need to have the relevant MACH_OMAP4_* select OMAP_HWSPINLOCK (only on
the OMAP4 machines on which the I2C bus is shared).

> Kevin

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