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imx: imx7d-pico-pi: add CPU supply nodes to device tree

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Attach sw1a as "cpu-supply" to both CPUs in order to cpufreq driver to
prove successfully.

Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
This commit is contained in:
Lech Perczak 2023-11-15 03:03:26 +01:00 committed by Christian Lamparter
parent 1b2d625cfb
commit 51a50c73dd
2 changed files with 86 additions and 0 deletions
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43
target/linux/generic/pending-5.15/870-ARM-dts-nxp-imx7d-pico-add-cpu-supply-nodes.patch Normal file
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@ -0,0 +1,43 @@
From 89a74fc5d367441bf4912e9158f0640ea3494b9e Mon Sep 17 00:00:00 2001
From: Lech Perczak <lech.perczak@gmail.com>
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 <festevam@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
---
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";

43
target/linux/generic/pending-6.1/870-ARM-dts-nxp-imx7d-pico-add-cpu-supply-nodes.patch Normal file
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@ -0,0 +1,43 @@
From d0562705bcd4cb9849156f095b2af0ec1bb53b56 Mon Sep 17 00:00:00 2001
From: Lech Perczak <lech.perczak@gmail.com>
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 <festevam@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
---
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";