From 47a34668179f6df2832e817db2083f0f02d65256 Mon Sep 17 00:00:00 2001
From: Haibo Chen <haibo.chen@nxp.com>
Date: Tue, 17 Oct 2023 14:50:48 +0800
Subject: [PATCH] arm64: dts: imx93-11x11-evk: add 12 ms delay to make sure the
VDD_SD power off
To support SD3.0 mode, according to the SD spec, a clean power off
for the VDD_SD is keep the VDD_SD lower than 0.5V for at least 1ms.
On imx93 board, gate off the VDD_SD, it will cost about 10ms to see
the voltage change from 3.3v to 0.5v. So at least need to dealy 11ms
to make sure a clean power off and power on. Here add 12ms dealy.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
index 021caf471bf6..9921ea13ab48 100644
--- a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
@@ -76,6 +76,7 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio3 7 GPIO_ACTIVE_HIGH>;
+ off-on-delay-us = <12000>;
enable-active-high;
};
};
--
2.30.9