diff options
| author | Frieder Schrempf <frieder.schrempf@kontron.de> | 2021-10-15 14:48:36 +0200 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2021-10-16 09:29:34 +0200 |
| commit | 82a4f329b133ad0de66bee12c0be5c67bb8aa188 (patch) | |
| tree | a945abf673e9c083fe4f3905a2d7e616aa46a47e /arch/arm64 | |
| parent | ARM: imx: register reset controller from a platform driver (diff) | |
| download | linux-82a4f329b133ad0de66bee12c0be5c67bb8aa188.tar.xz linux-82a4f329b133ad0de66bee12c0be5c67bb8aa188.zip | |
arm64: dts: imx8mm-kontron: Make sure SOC and DRAM supply voltages are correct
It looks like the voltages for the SOC and DRAM supply weren't properly
validated before. The datasheet and uboot-imx code tells us that VDD_SOC
should be 800 mV in suspend and 850 mV in run mode. VDD_DRAM should be
950 mV for DDR clock frequencies of up to 1.5 GHz.
Let's fix these values to make sure the voltages are within the required
range.
Fixes: 8668d8b2e67f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")
Cc: stable@vger.kernel.org
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 6 |
1 files changed, 4 insertions, 2 deletions
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 9db9b90bf2bc..7cf60c17c29b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi @@ -91,10 +91,12 @@ reg_vdd_soc: BUCK1 { regulator-name = "buck1"; regulator-min-microvolt = <800000>; - regulator-max-microvolt = <900000>; + regulator-max-microvolt = <850000>; regulator-boot-on; regulator-always-on; regulator-ramp-delay = <3125>; + nxp,dvs-run-voltage = <850000>; + nxp,dvs-standby-voltage = <800000>; }; reg_vdd_arm: BUCK2 { @@ -111,7 +113,7 @@ reg_vdd_dram: BUCK3 { regulator-name = "buck3"; regulator-min-microvolt = <850000>; - regulator-max-microvolt = <900000>; + regulator-max-microvolt = <950000>; regulator-boot-on; regulator-always-on; }; |