From d0562705bcd4cb9849156f095b2af0ec1bb53b56 Mon Sep 17 00:00:00 2001 From: Lech Perczak 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 Cc: Shawn Guo Cc: Sascha Hauer Signed-off-by: Lech Perczak --- arch/arm/boot/dts/imx7d-pico.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/arch/arm/boot/dts/nxp/imx/imx7d-pico.dtsi +++ b/arch/arm/boot/dts/nxp/imx/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";