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 for freebsd-current@FreeBSD.org; Thu, 06 Sep 2018 12:33:39 +0200
To: FreeBSD Current <freebsd-current@FreeBSD.org>
From: Jakob Alvermark <jakob@alvermark.net>
Subject: SD card reader only works after a suspend/resume
Message-ID: <34659383-981f-e627-dfaa-d486685a11f5@alvermark.net>
Date: Thu, 6 Sep 2018 12:33:39 +0200
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Hi,


I discovered this by chance.

The SD card reader in my laptop has never worked, but now I noticed it 
does after suspending and resuming.

The controller is probed and attached on boot:

sdhci_acpi1: <Intel Bay Trail/Braswell SDXC Controller> iomem 
0x90a00000-0x90a00fff irq 47 on acpi0

But nothing happens if I put a card in. Unless I suspend and resume:

mmc1: <MMC/SD bus> on sdhci_acpi1
mmcsd0: 32GB <SDHC SL32G 8.0 SN 19CD02C0 MFG 11/2014 by 3 SD> at mmc1 
50.0MHz/4bit/65535-block

Then I can remove and replug cards and it seems to work just fine.


Jakob