diff mbox series

[3/3] arm64: dts: imx93-11x11-evk: add 12 ms delay to make sure the VDD_SD power off

Message ID 20231017065048.1304294-3-haibo.chen@nxp.com
State Accepted
Commit 47a34668179f6df2832e817db2083f0f02d65256
Headers show
Series [1/3] arm64: dts: imx93-11x11-evk: set SION for cmd and data pad of USDHC | expand

Commit Message

Bough Chen Oct. 17, 2023, 6:50 a.m. UTC 
From: Haibo Chen <haibo.chen@nxp.com>

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>
---
 arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

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;
 	};
 };