diff options
| author | Peng Fan <peng.fan@nxp.com> | 2017-08-25 14:35:39 +0800 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2017-08-25 14:35:39 +0800 |
| commit | 6a49c55a05a4905cd3cfa78400d320483f3f2d71 (patch) | |
| tree | 81c22de6c7ad12f614a3a052a9bf6c623b762484 | |
| parent | b6b4b9498a5b531f9173e60db6b9b8c2a76d6523 (diff) | |
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>
| -rw-r--r-- | arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts | 5 | ||||
| -rw-r--r-- | arch/arm/dts/fsl-imx8qxp-mek.dts | 2 |
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts b/arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts index c1ee60a7c8..8b4460c99b 100644 --- a/arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts +++ b/arch/arm/dts/fsl-imx8qxp-lpddr4-arm2.dts @@ -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"; -};
\ No newline at end of file +}; diff --git a/arch/arm/dts/fsl-imx8qxp-mek.dts b/arch/arm/dts/fsl-imx8qxp-mek.dts index 4d5b5dbb67..4282522dad 100644 --- a/arch/arm/dts/fsl-imx8qxp-mek.dts +++ b/arch/arm/dts/fsl-imx8qxp-mek.dts @@ -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>; }; }; |