Re: [PATCH 12/13] cpufreq: Add cpufreq driver for Tegra124

Andrew Bresticker
2014-07-11T16:33:47Z

On Fri, Jul 11, 2014 at 8:29 AM, Tuomas Tynkkynen <ttynkkynen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> wrote:
>
> On the hardware level, the two I2C controllers sharing the same pins
> have knowledge of each other and won't start transmitting if the bus
> is busy (something different from the usual I2C arbitration, that is).
> I guess on the kernel side there could be a problem if the voltage register
> is marked cached in the PMIC driver's regmap.

Yeah, in our tree we have a hack to disable regcache for SD0_VOLTAGE.
Other than the value reported to userspace being wrong, leaving it as
cacheable shouldn't be an issue if no other drivers try to read/write
that register.
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html