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| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2026-01-24 01:59:57 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2026-03-06 15:15:02 +0300 |
| commit | 5c03465ecf6a56b7b261df9594f0e10612f53a50 (patch) | |
| tree | b6949a4eefb9b9536260de5f62a45f9dc9d7eb0f /scripts/bash-completion | |
| parent | bb70589b67039e491dd60cf71272884e926a0f95 (diff) | |
| download | linux-5c03465ecf6a56b7b261df9594f0e10612f53a50.tar.xz | |
arm64: dts: renesas: rzv2-evk-cn15-sd: Add ramp delay for SD0 regulator
Set an appropriate ramp delay for the SD0 I/O voltage regulator in the
CN15 SD overlay to make UHS-I voltage switching reliable during card
initialization.
This issue was observed on the RZ/V2H EVK, while the same UHS-I cards
worked on the RZ/V2N EVK without problems. Adding the ramp delay makes
the behavior consistent and avoids SD init timeouts.
Before this change SD0 could fail with:
mmc0: error -110 whilst initialising SD card
With the delay in place UHS-I cards enumerate correctly:
mmc0: new UHS-I speed SDR104 SDXC card at address aaaa
mmcblk0: mmc0:aaaa SR64G 59.5 GiB
mmcblk0: p1
Fixes: 3d6c2bc7629c8 ("arm64: dts: renesas: Add CN15 eMMC and SD overlays for RZ/V2H and RZ/V2N EVKs")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260123225957.1007089-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'scripts/bash-completion')
0 files changed, 0 insertions, 0 deletions