From 288239489365b4c6485847edce76eadfbf1ef84d Mon Sep 17 00:00:00 2001 From: Haibo Chen Date: Tue, 5 Nov 2019 16:13:38 +0800 Subject: MLK-22900 ARM: dts: change to use off-on-delay-us in regulator After commit f7907e57aea2 ("regulator: fixed: add off-on-delay"), user can use "off-on-delay-us" to define the regulator off-delay time. For SD card, according to the spec requirement, for sd card power reset operation, it need sd card supply voltage to be lower than 0.5v and keep over 1ms, otherwise, next time power back the sd card supply voltage to 3.3v, sd card can't support SD3.0 mode again. This patch add the off-on-delay-us to each board, make sure the sd power reset behavior is align with the specification. Without this patch, when do quick system suspend/resume test, some sd card can't work at SD3.0 mode after system resume back. Signed-off-by: Haibo Chen Acked-by: Leonard Crestez --- arch/arm64/boot/dts/freescale/imx8qxp-mek.dts | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm64/boot/dts/freescale/imx8qxp-mek.dts') diff --git a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts index 948ad3bd0f6b..247f5d9ab1f6 100755 --- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts +++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts @@ -117,6 +117,7 @@ regulator-min-microvolt = <3000000>; regulator-max-microvolt = <3000000>; gpio = <&lsio_gpio4 19 GPIO_ACTIVE_HIGH>; + off-on-delay-us = <3480>; enable-active-high; }; -- cgit v1.2.3