6.14-stable review patch. If anyone has any objections, please let me know.
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From: Ahmad Fatoum a.fatoum@pengutronix.de
[ Upstream commit 3d8ffe5702b24a0bd9d97446c0740110325f379b ]
The Skov i.MX8MP boards are passively cooled and heatsink is specced for continuous operation at 1.2 GHz only. Short bouts of 1.6 GHz are ok, but these should be invoked intentionally, not as part of suspend/resume cycles.
Therefore, configure RUN frequency as 850 mV and remove the higher voltage operating points from those permissible for suspend.
Fixes: 6d382d51d979 ("arm64: dts: freescale: Add SKOV IMX8MP CPU revB board") Signed-off-by: Ahmad Fatoum a.fatoum@pengutronix.de Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- .../boot/dts/freescale/imx8mp-skov-reva.dtsi | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi index ae82166b5c266..7ae686d37ddac 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi @@ -163,6 +163,19 @@ }; };
+/* + * Board is passively cooled and heatsink is specced for continuous operation + * at 1.2 GHz only. Short bouts of 1.6 GHz are ok, but these should be done + * intentionally, not as part of suspend/resume cycles. + */ +&{/opp-table/opp-1600000000} { + /delete-property/ opp-suspend; +}; + +&{/opp-table/opp-1800000000} { + /delete-property/ opp-suspend; +}; + &A53_0 { cpu-supply = <®_vdd_arm>; }; @@ -253,7 +266,7 @@ regulator-boot-on; regulator-always-on; regulator-ramp-delay = <3125>; - nxp,dvs-run-voltage = <950000>; + nxp,dvs-run-voltage = <850000>; nxp,dvs-standby-voltage = <850000>; };