Re: [PATCH 0/4] arm64: dts: renesas: Fix SD0 failures on RZ/{T2H, N2H} and RZ/V2H

[Lad, Prabhakar]

Hi Biju,

On Sat, Jan 24, 2026 at 12:47 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
>
> Hi Prabhakar,
>
> > -----Original Message-----
> > From: Prabhakar <prabhakar.csengg@xxxxxxxxx>
> > Sent: 23 January 2026 23:00
> > Subject: [PATCH 0/4] arm64: dts: renesas: Fix SD0 failures on RZ/{T2H, N2H} and RZ/V2H
> >
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> >
> > Hi all,
> >
> > During testing of SD card functionality on RZ/{T2H, N2H} and RZ/V2H evk boards, it was observed that
> > the SD card initialization was failing for UHS-I cards. While investigating the issue on RZ/G3L smarc
> > board it was found that 12ms ramp delay is required for SD0 power regulator to ensure proper
>
>
> It is 1.2 msec voltage ramp for switching from 3.3v to 1.8v on RZ/G3L SMARC
>
Right, thanks for correcting.

Cheers,
Prabhakar