target/linux/generic/pending-6.1/870-ARM-dts-nxp-imx7d-pico-add-cpu-supply-nodes.patch

   1 From d0562705bcd4cb9849156f095b2af0ec1bb53b56 Mon Sep 17 00:00:00 2001
   2 From: Lech Perczak <lech.perczak@gmail.com>
   3 Date: Fri, 17 Nov 2023 21:33:04 +0100
   4 Subject: [PATCH] ARM: dts: nxp: imx7d-pico: add cpu-supply nodes
   5
   6 The PICO-IMX7D SoM has the usual power supply configuration using
   7 output sw1a of PF3000 PMIC, which was defined in downstream derivative
   8 of linux-imx (see link) in the sources for "Android Things" devkit.
   9 It is required to support CPU frequency scaling.
  10
  11 Map the respective "cpu-supply" nodes of each core to sw1a of the PMIC.
  12
  13 Enabling them causes cpufreq-dt, and imx-thermal drivers to probe
  14 successfully, and CPU frequency scaling to function.
  15
  16 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
  17
  18 Cc: Fabio Estevam <festevam@gmail.com>
  19 Cc: Shawn Guo <shawnguo@kernel.org>
  20 Cc: Sascha Hauer <s.hauer@pengutronix.de>
  21
  22 Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
  23 ---
  24  arch/arm/boot/dts/imx7d-pico.dtsi | 8 ++++++++
  25  1 file changed, 8 insertions(+)
  26
  27 --- a/arch/arm/boot/dts/imx7d-pico.dtsi
  28 +++ b/arch/arm/boot/dts/imx7d-pico.dtsi
  29 @@ -108,6 +108,14 @@
  30         assigned-clock-rates = <0>, <32768>;
  31  };
  32
  33 +&cpu0 {
  34 +       cpu-supply = <&sw1a_reg>;
  35 +};
  36 +
  37 +&cpu1 {
  38 +       cpu-supply = <&sw1a_reg>;
  39 +};
  40 +
  41  &ecspi3 {
  42         cs-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
  43         pinctrl-names = "default";