linux-kernel - Re: [PATCH v2 1/2] arm64: dts: ti: am62-phycore-som: Increase cpu frequency to 1.4 GHz

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Message-ID: <8a8323c5-3b80-478c-b94a-51a42b1859df@phytec.de>
Date: Wed, 2 Oct 2024 08:09:47 +0200
From: Wadim Egorov <w.egorov@...tec.de>
To: Garrett Giordano <ggiordano@...tec.com>, <nm@...com>, <vigneshr@...com>,
	<kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <upstream@...ts.phytec.de>
Subject: Re: [PATCH v2 1/2] arm64: dts: ti: am62-phycore-som: Increase cpu
 frequency to 1.4 GHz



Am 01.10.24 um 09:19 schrieb Garrett Giordano:
> The am625 is capable of running at 1.4 GHz when VDD_CORE is increased
> from 0.75V to 0.85V. Here we add a 1.4 GHz node to the a53_opp_table and
> increase the VDD_CORE voltage accordingly.
> 
> Signed-off-by: Garrett Giordano <ggiordano@...tec.com>

Reviewed-by: Wadim Egorov <w.egorov@...tec.de>

> ---
>   arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi | 11 +++++++++--
>   1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi
> index 43488cc8bcb1..236b94c0248c 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi
> @@ -173,6 +173,13 @@ AM62X_IOPAD(0x01f4, PIN_INPUT, 0) /* (D16) EXTINTn */
>   	};
>   };
>   
> +&a53_opp_table {
> +	opp-1400000000 {
> +		opp-hz = /bits/ 64 <1400000000>;
> +		opp-supported-hw = <0x01 0x0004>;
> +	};
> +};
> +
>   &cpsw3g {
>   	pinctrl-names = "default";
>   	pinctrl-0 = <&main_rgmii1_pins_default>;
> @@ -226,8 +233,8 @@ pmic@30 {
>   		regulators {
>   			vdd_core: buck1 {
>   				regulator-name = "VDD_CORE";
> -				regulator-min-microvolt = <750000>;
> -				regulator-max-microvolt = <750000>;
> +				regulator-min-microvolt = <850000>;
> +				regulator-max-microvolt = <850000>;
>   				regulator-boot-on;
>   				regulator-always-on;
>   			};