On Thu, Sep 30, 2021 at 05:56:25PM +0200, Frieder Schrempf wrote:
> From: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
>
> VDD_SOC should be 800 mV in suspend and 850 mV in run mode. VDD_DRAM
> should be 950 mV for DDR clock frequencies of 1.5 GHz.
>
> This information is taken from the datasheet and the uboot-imx code.
I'm wondering where the existing settings were coming from?
Shawn
>
> Signed-off-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
> index 03b3516abd64..b12fb7ce6686 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
> @@ -92,10 +92,12 @@ regulators {
> reg_vdd_soc: BUCK1 {
> regulator-name = "buck1";
> regulator-min-microvolt = <800000>;
> - regulator-max-microvolt = <900000>;
> + regulator-max-microvolt = <850000>;
> regulator-boot-on;
> regulator-always-on;
> regulator-ramp-delay = <3125>;
> + nxp,dvs-run-voltage = <850000>;
> + nxp,dvs-standby-voltage = <800000>;
> };
>
> reg_vdd_arm: BUCK2 {
> @@ -111,7 +113,7 @@ reg_vdd_arm: BUCK2 {
> reg_vdd_dram: BUCK3 {
> regulator-name = "buck3";
> regulator-min-microvolt = <850000>;
> - regulator-max-microvolt = <900000>;
> + regulator-max-microvolt = <950000>;
> regulator-boot-on;
> regulator-always-on;
> };
> --
> 2.33.0
>
