diff mbox series

[v4,5/6] arm64: dts: freescale: imx8mp-skov: operate SoC in nominal mode

Message ID 20250218-imx8m-clk-v4-5-b7697dc2dcd0@pengutronix.de (mailing list archive)
State New
Headers show
Series arm64: dts: freescale: imx8mp-skov: switch to nominal drive mode | expand

Commit Message

Ahmad Fatoum Feb. 18, 2025, 6:26 p.m. UTC 
To reduce heat generation, the Skov i.MX8MP boards should run in nominal
drive mode with a VDD_SOC voltage of 850 mV.

At this operating point, not all frequencies that are achievable with
overdrive mode are possible, so import imx8mp-nominal.dtsi to clock down
the clocks.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Peng Fan Feb. 20, 2025, 2:57 a.m. UTC | #1 
On Tue, Feb 18, 2025 at 07:26:45PM +0100, Ahmad Fatoum wrote:
>To reduce heat generation, the Skov i.MX8MP boards should run in nominal
>drive mode with a VDD_SOC voltage of 850 mV.
>
>At this operating point, not all frequencies that are achievable with
>overdrive mode are possible, so import imx8mp-nominal.dtsi to clock down
>the clocks.
>
>Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
index 59813ef8e2bb3a3d5672ba1c5776cf0e45fb6862..9dc36517e90c16dd10d14f55d8d5582e845b0f60 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
@@ -1,6 +1,7 @@ 
 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
 
 #include "imx8mp.dtsi"
+#include "imx8mp-nominal.dtsi"
 
 #include <dt-bindings/leds/common.h>
 
@@ -237,8 +238,8 @@  pmic@25 {
 		regulators {
 			reg_vdd_soc: BUCK1 {
 				regulator-name = "VDD_SOC";
-				regulator-min-microvolt = <600000>;
-				regulator-max-microvolt = <2187500>;
+				regulator-min-microvolt = <850000>;
+				regulator-max-microvolt = <850000>;
 				vin-supply = <&reg_5v_p>;
 				regulator-boot-on;
 				regulator-always-on;