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MLK-16268 arm: dts: 8qxp: add delay-us for usdhc2

Measured signal using oscilloscope.
Add startup delay and off-on-delay-us to make usdhc2 vmmc
supply work properly. Otherwise, the delay between power
off/on is short and power actully not off, then card report
S18A as 0 and could not switch voltage to 1.8V.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
(cherry picked from commit 6a49c55a05)
Peng Fan 3 years ago
parent
commit
691c72e8fc
2 changed files with 5 additions and 2 deletions
  1. +3
    -2
      arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts
  2. +2
    -0
      arch/arm/dts/fsl-imx8qxp-mek.dts

+ 3
- 2
arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts View File

@ -51,7 +51,8 @@
regulator-max-microvolt = <3000000>;
gpio = <&gpio4 19 GPIO_ACTIVE_HIGH>;
enable-active-high;
off-on-delay-us = <20000>;
startup-delay-us = <300>;
off-on-delay-us = <3500>;
};
};
};
@ -421,4 +422,4 @@
&usb2 {
status = "okay";
};
};

+ 2
- 0
arch/arm/dts/fsl-imx8qxp-mek.dts View File

@ -48,6 +48,8 @@
regulator-max-microvolt = <3000000>;
gpio = <&gpio4 19 GPIO_ACTIVE_HIGH>;
enable-active-high;
startup-delay-us = <100>;
off-on-delay-us = <12000>;
};
};


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