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- From d0562705bcd4cb9849156f095b2af0ec1bb53b56 Mon Sep 17 00:00:00 2001
- From: Lech Perczak <[email protected]>
- Date: Fri, 17 Nov 2023 21:33:04 +0100
- Subject: [PATCH] ARM: dts: nxp: imx7d-pico: add cpu-supply nodes
- The PICO-IMX7D SoM has the usual power supply configuration using
- output sw1a of PF3000 PMIC, which was defined in downstream derivative
- of linux-imx (see link) in the sources for "Android Things" devkit.
- It is required to support CPU frequency scaling.
- Map the respective "cpu-supply" nodes of each core to sw1a of the PMIC.
- Enabling them causes cpufreq-dt, and imx-thermal drivers to probe
- successfully, and CPU frequency scaling to function.
- Link: https://android.googlesource.com/platform/hardware/bsp/kernel/nxp/imx-v4.1/+/o-iot-preview-5/arch/arm/boot/dts/imx7d-pico.dtsi#849
- Cc: Fabio Estevam <[email protected]>
- Cc: Shawn Guo <[email protected]>
- Cc: Sascha Hauer <[email protected]>
- Signed-off-by: Lech Perczak <[email protected]>
- ---
- arch/arm/boot/dts/imx7d-pico.dtsi | 8 ++++++++
- 1 file changed, 8 insertions(+)
- --- a/arch/arm/boot/dts/imx7d-pico.dtsi
- +++ b/arch/arm/boot/dts/imx7d-pico.dtsi
- @@ -108,6 +108,14 @@
- assigned-clock-rates = <0>, <32768>;
- };
-
- +&cpu0 {
- + cpu-supply = <&sw1a_reg>;
- +};
- +
- +&cpu1 {
- + cpu-supply = <&sw1a_reg>;
- +};
- +
- &ecspi3 {
- cs-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
- pinctrl-names = "default";
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