From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Dooks Date: Thu, 27 Feb 2014 12:20:19 +0000 Subject: Re: [RFC 1/4] ARM: dts: r8a7790-lager: Add VDD MPU regulator for DVFS Message-Id: <530F2D83.3050008@codethink.co.uk> List-Id: References: <1393456190-7870-2-git-send-email-bcousson@baylibre.com> In-Reply-To: <1393456190-7870-2-git-send-email-bcousson@baylibre.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org On 26/02/14 23:09, Benoit Cousson wrote: > The CA15 cluster is capable of voltage scaling. Add the regulator > in the i2c3 node, to allow the generic CPUFreq driver to use it. > > Enable the i2c3 pin mux and the device node as well since the > da9210 is connected to that bus. > > Note: Vmin is set to 0.8v to allow experimentation only. > There is no guaranty that the CPUs will still work at this > voltage. > > Signed-off-by: Benoit Cousson > --- > arch/arm/boot/dts/r8a7790-lager.dts | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts > index 6e99eb2..5f77e3a 100644 > --- a/arch/arm/boot/dts/r8a7790-lager.dts > +++ b/arch/arm/boot/dts/r8a7790-lager.dts > @@ -159,6 +159,11 @@ > renesas,groups = "qspi_ctrl", "qspi_data4"; > renesas,function = "qspi"; > }; > + > + i2c3_pins: i2c3 { > + renesas,groups = "i2c3"; > + renesas,function = "i2c3"; > + }; > }; I thought i2c3 was a single function set of pins? -- Ben Dooks http://www.codethink.co.uk/ Senior Engineer Codethink - Providing Genius