| From 6c39b8a9c8f47d552fa6ae9ad28aef66459df22b Mon Sep 17 00:00:00 2001 |
| From: Benoit Cousson <bcousson@baylibre.com> |
| Date: Tue, 3 Jun 2014 21:02:12 +0900 |
| Subject: ARM: shmobile: lager: Add VDD MPU regulator for DVFS |
| |
| 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: In R-CAR Gen2, each frequency is using the same voltage, |
| and DVS control is not used. Therefore, this patch set the |
| voltage(Vmin/Vmax) to 1000mv. |
| |
| Signed-off-by: Benoit Cousson <bcousson@baylibre.com> |
| [gaku.inami.xw@bp.renesas.com: Changes Vmin for disabling DVS] |
| Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> |
| Acked-by: Magnus Damm <damm@opensource.se> |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| |
| (cherry picked from commit 05f72e03b7553958609d1475c79491f90e6b50d3) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| 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 9becef78c797..8428204d9512 100644 |
| --- a/arch/arm/boot/dts/r8a7790-lager.dts |
| +++ b/arch/arm/boot/dts/r8a7790-lager.dts |
| @@ -204,6 +204,11 @@ |
| "msiof1_tx"; |
| renesas,function = "msiof1"; |
| }; |
| + |
| + i2c3_pins: i2c3 { |
| + renesas,groups = "i2c3"; |
| + renesas,function = "i2c3"; |
| + }; |
| }; |
| |
| ðer { |
| @@ -317,3 +322,19 @@ |
| cd-gpios = <&gpio3 22 GPIO_ACTIVE_LOW>; |
| status = "okay"; |
| }; |
| + |
| +&i2c3 { |
| + pinctrl-names = "default"; |
| + pinctrl-0 = <&i2c3_pins>; |
| + status = "okay"; |
| + |
| + vdd_dvfs: regulator@68 { |
| + compatible = "diasemi,da9210"; |
| + reg = <0x68>; |
| + |
| + regulator-min-microvolt = <1000000>; |
| + regulator-max-microvolt = <1000000>; |
| + regulator-boot-on; |
| + regulator-always-on; |
| + }; |
| +}; |
| -- |
| 2.1.2 |
| |