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ARM: dts: imx6ull-dhcor: Remove 900MHz operating point

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Due to CPU lifetime consideration of the SoC manufacturer [1] and
the preferred area of operation in the industrial related
environment, set the maximum frequency for each DHCOM i.MX6ULL to
792MHz, as with the industrial type. This is done by removing the
operating point at 900MHz and set the clock-frequency to 792000000.

[1] https://www.nxp.com/docs/en/application-note/AN5337.pdf

Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Christoph Niedermaier 2023-12-21 17:46:33 +01:00 • committed by Shawn Guo
parent 1263f35e5e
commit 38c0483d08
1 changed files with 5 additions and 2 deletions
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7
arch/arm/boot/dts/nxp/imx/imx6ull-dhcor-som.dtsi
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@ -28,10 +28,14 @@
/*
* Due to the design as a solderable SOM, there are no capacitors
* below the SoC, therefore higher voltages are required.
* Due to CPU lifetime consideration of the SoC manufacturer and
* the preferred area of operation in the industrial related
* environment, set the maximum frequency for each DHCOM i.MX6ULL
* to 792MHz, as with the industrial type.
*/
clock-frequency = <792000000>;
operating-points = <
/* kHz uV */
900000 1275000
792000 1250000 /* Voltage increased */
528000 1175000
396000 1025000
@ -39,7 +43,6 @@
>;
fsl,soc-operating-points = <
/* KHz uV */
900000 1250000
792000 1250000 /* Voltage increased */
528000 1175000
396000 1175000