From: jonathanh@nvidia•com (Jon Hunter)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] ARM: tegra: Enable CPUFreq support for Tegra124 Chromebooks
Date: Wed, 3 Jun 2015 12:44:48 +0100 [thread overview]
Message-ID: <556EE8B0.2060205@nvidia.com> (raw)
In-Reply-To: <1433331821-9648-1-git-send-email-jonathanh@nvidia.com>
Adding LAKML. Jon
On 03/06/15 12:43, Jon Hunter wrote:
> Add the device-tree DFLL clock node and CPU regulator phandle for
> tegra124 chromebooks to enable CPUFreq support on these boards.
>
> Signed-off-by: Jon Hunter <jonathanh@nvidia•com>
>
> ---
> This has been tested on a tegra124 nyan-big by using the userspace
> CPUFreq governor with a simple CPU benchmark to measure the time taken
> for the test to execute.
>
> The tegra124 chromebooks use the same ams,as3722 PMIC as the Jetson TK1
> board and hence, this change is based upon that for the Jetson TK1.
>
> arch/arm/boot/dts/tegra124-nyan.dtsi | 15 ++++++++++++++-
> 1 file changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/tegra124-nyan.dtsi b/arch/arm/boot/dts/tegra124-nyan.dtsi
> index a9aec23e06f2..40c23a0b7cfc 100644
> --- a/arch/arm/boot/dts/tegra124-nyan.dtsi
> +++ b/arch/arm/boot/dts/tegra124-nyan.dtsi
> @@ -159,7 +159,7 @@
> vin-ldo9-10-supply = <&vdd_5v0_sys>;
> vin-ldo11-supply = <&vdd_3v3_run>;
>
> - sd0 {
> + vdd_cpu: sd0 {
> regulator-name = "+VDD_CPU_AP";
> regulator-min-microvolt = <700000>;
> regulator-max-microvolt = <1350000>;
> @@ -397,6 +397,13 @@
> non-removable;
> };
>
> + /* CPU DFLL clock */
> + clock at 0,70110000 {
> + status = "okay";
> + vdd-cpu-supply = <&vdd_cpu>;
> + nvidia,i2c-fs-rate = <400000>;
> + };
> +
> ahub at 0,70300000 {
> i2s at 0,70301100 {
> status = "okay";
> @@ -487,6 +494,12 @@
> };
> };
>
> + cpus {
> + cpu at 0 {
> + vdd-cpu-supply = <&vdd_cpu>;
> + };
> + };
> +
> gpio-keys {
> compatible = "gpio-keys";
>
>
next parent reply other threads:[~2015-06-03 11:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1433331821-9648-1-git-send-email-jonathanh@nvidia.com>
2015-06-03 11:44 ` Jon Hunter [this message]
2015-07-13 13:08 ` [PATCH] ARM: tegra: Enable CPUFreq support for Tegra124 Chromebooks Jon Hunter
2015-09-03 13:40 ` Tomeu Vizoso
2015-09-15 8:12 ` Thierry Reding
2015-09-15 9:00 ` Tomeu Vizoso
2015-11-04 12:16 ` Jon Hunter
2015-11-04 12:19 ` Jon Hunter
2015-11-04 13:23 ` Jon Hunter
2015-11-20 15:20 ` Jon Hunter
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