Re: [PATCH 3/3] riscv: dts: spacemit: k3-deepcomputing-fml13v05: Enable SD card support

["Troy Mitchell" <troy.mitchell@linux.spacemit.com>]

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On Wed, Sep 23, 2026 at 02:35:20PM +0800, Sandie Cao wrote:
> FML13V05 SD card slot is inside the board, it doesn't need cd-gpio,
> FML13V05 Keeps GPIO88 to low, Then SD card is always on for SD Card
> driver.

An internal slot does not necessarily mean the card is non-removable.
I don't think its location alone justifies keeping card detect asserted:
GPIO88 would report a card present even when the slot is empty.

> We check the vmmc-supply is p3v3. We have the same SDK DTS config with
> k3_com260[1] , so, this patch follows the SD card patch of k3_com260
> dts[2].
>
> If this is not correct, we will change it.

Could you confirm from the schematics that the SD power wiring matches
CoM260 and that the card's VDD is actually connected to ALDO4? If so,
this supply reference is fine. The same SDK configuration alone does
not establish the wiring.

If the card instead uses a fixed, always-on supply with no software power
control, vmmc-supply is optional for the MMC core; it should not point to
an unrelated ALDO4 rail.

-- 
Troy Mitchell

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