@@ -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
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> --- Cc: Rob Herring <robh+dt@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: Conor Dooley <conor+dt@kernel.org> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <festevam@denx.de> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: kernel@dh-electronics.com Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org To: linux-arm-kernel@lists.infradead.org --- arch/arm/boot/dts/nxp/imx/imx6ull-dhcor-som.dtsi | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)