Messages in this thread | | | From | Amit Tomer <> | Date | Mon, 13 Jul 2020 14:33:54 +0530 | Subject | Re: [PATCH v5 10/10] arm64: dts: actions: Add uSD support for Cubieboard7 |
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Hi,
> But this regulator is only used for the eMMC there, which we apparently > don't have on the Cubieboard 7?
We do have eMMC present on Cubieboard 7 (both the versions of Cubieboard7), and the regulator name is similar to what is used in "s900-bubblegum-96.dts" .i.e. "vcc_3v1".
But Since this patch doesn't enable eMMC, it does make sense to remove this "vcc_3v1" regulator and keep the other one.
> > Also, another day tested it without having these regulators in , and > > still it seems to > > work. So should these be removed ? > > If there are not even referenced in the .dts, then fixed regulators are > rather pointless. So yes, please remove this vcc-3v1 one.
Sure, I would do this.
> What is the story with the other regulator? Is there a PMIC or a power > switch for the SD card? Or is the power supply actually hardwired?
SD_VCC is connected to SWITCH/LDO which gets input from ATM2603C PMIC. This seems to be enabled by default ( in early bootloaders I guess).
Thanks -Amit.
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