[PATCH] imx93-u-boot: Describe the CPU clocks in the devicetree
Sébastien Szymanski
sebastien.szymanski at armadeus.com
Fri Jul 19 16:00:58 CEST 2024
Hello Fabio,
On 7/18/24 18:54, Fabio Estevam wrote:
> Currently, there is an error when the i.MX93 CPU frequency is
> read:
>
> Could not read CPU frequency: -2
> CPU: NXP i.MX93(52) Rev1.1 A55 at 0 MHz
>
> Fix it by describing the A55 clock nodes in the devicetree, like done
> on other i.MX SoCs.
>
> With this change, the CPU frequency error is gone and it can be correctly
> retrieved:
>
> CPU: NXP i.MX93(52) Rev1.1 A55 at 1700 MHz
> CPU: Industrial temperature grade (-40C to 105C) at 35C
>
> As the upstream imx93.dtsi does not describe the CPU clocks,
> keep the clock node in imx93-u-boot.dtsi for now.
>
> Signed-off-by: Fabio Estevam <festevam at gmail.com>
> ---
> arch/arm/dts/imx93-u-boot.dtsi | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm/dts/imx93-u-boot.dtsi b/arch/arm/dts/imx93-u-boot.dtsi
> index 289aba175843..b2b3d57318fc 100644
> --- a/arch/arm/dts/imx93-u-boot.dtsi
> +++ b/arch/arm/dts/imx93-u-boot.dtsi
> @@ -9,6 +9,14 @@
> };
> };
>
> +&A55_0 {
> + clocks = <&clk IMX93_CLK_ARM_PLL>;
Why IMX93_CLK_ARM_PLL and not IMX93_CLK_A55_SEL ?
Best regards,
> +};
> +
> +&A55_1 {
> + clocks = <&clk IMX93_CLK_ARM_PLL>;
> +};
> +
> &binman {
> u-boot-spl-ddr {
> align = <4>;
--
Sébastien Szymanski, Armadeus Systems
Software engineer
More information about the U-Boot
mailing list