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arm64: dts: imx95-19x19-evk: Add Tsettle delay in m2 regulator

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M.2 device only can be enabled after all Power Rails reach their minimum
operating voltage (PCI Express M.2 Specification r5.1 3.1.4 Power-up
Timing). Set a delay equal to the max value of Tsettle in m2 regulator.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Richard Zhu
2025-08-18 09:25:38 +08:00
committed by Shawn Guo
parent 06d59feccd
commit 0898ed6832
1 changed files with 7 additions and 0 deletions
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7
arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
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@@ -136,6 +136,13 @@ reg_m2_pwr: regulator-m2-pwr {
regulator-max-microvolt = <3300000>;
gpio = <&i2c7_pcal6524 20 GPIO_ACTIVE_HIGH>;
enable-active-high;
/*
* M.2 device only can be enabled(W_DISABLE1#) after all Power
* Rails reach their minimum operating voltage (PCI Express M.2
* Specification r5.1 3.1.4 Power-up Timing).
* Set a delay equal to the max value of Tsettle here.
*/
startup-delay-us = <5000>;
};
reg_pcie0: regulator-pcie {