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path: root/arch/arm/boot/dts/imx7ulp-evkb-sd1.dts
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2019-11-25MLK-22900 ARM: dts: change to use off-on-delay-us in regulatorHaibo Chen
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 <haibo.chen@nxp.com> Acked-by: Leonard Crestez <leonard.crestez@nxp.com>
2019-11-25ARM: dts: imx7ulp: add sd1 slot supportHaibo Chen
SDIO wifi and sd1 slot share one usdhc, this patch add sd1 slot support on imx7ulp evk board, need to do hardware rework first. Signed-off-by: Haibo Chen <haibo.chen@nxp.com>