Re: [PATCH 8/8] arm64: dts: imx8mm-kontron: Leave reg_vdd_arm always powered on
From: Heiko Thiery <hidden>
Date: 2021-09-30 18:52:50
Also in:
linux-arm-kernel, lkml, stable
Hi Frieder, Am Do., 30. Sept. 2021 um 17:57 Uhr schrieb Frieder Schrempf [off-list ref]:
From: Frieder Schrempf <redacted>
When the cpufreq driver is enabled, the buck2 regulator is kept powered on
by the dependency between the CPU nodes with 'cpu-supply' set. Without the
cpufreq driver the kernel will power off the regulator as it doesn't see
any users. This is obviously not what we want, therefore keep the regulator
powered on in any case.
Reported-by: Heiko Thiery <redacted>
Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")
Cc: stable@vger.kernel.org
Signed-off-by: Frieder Schrempf <redacted>Tested-by: Heiko Thiery <redacted>
quoted hunk ↗ jump to hunk
--- arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 + 1 file changed, 1 insertion(+)diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi index 213014f59b46..c3418d263eb4 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi@@ -105,6 +105,7 @@ reg_vdd_arm: BUCK2 { regulator-min-microvolt = <850000>; regulator-max-microvolt = <950000>; regulator-boot-on; + regulator-always-on; regulator-ramp-delay = <3125>; nxp,dvs-run-voltage = <950000>; nxp,dvs-standby-voltage = <850000>; --2.33.0