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| author | loos <loos@FreeBSD.org> | 2015-05-21 20:09:36 +0000 |
|---|---|---|
| committer | loos <loos@FreeBSD.org> | 2015-05-21 20:09:36 +0000 |
| commit | dd5257f7d01d3ae28899417a214d9bfa5a94f0bf (patch) | |
| tree | dac302b6ab37b478f088edfdcd5474b2bc35db17 /sys/dev/sdhci/sdhci.h | |
| parent | d8ed876b187c8092bdd7945b04083327db53a54e (diff) | |
| download | FreeBSD-src-dd5257f7d01d3ae28899417a214d9bfa5a94f0bf.zip FreeBSD-src-dd5257f7d01d3ae28899417a214d9bfa5a94f0bf.tar.gz | |
Raise the SDHCI timeout to 10 seconds and add a sysctl to allow changing
this value at runtime.
The SD card specification says that a block write or a block erase can take
up to 250ms to complete and thus, under some circumstances, the existent 2
seconds timeout was triggering with normal usage.
This change fixes the sporadic controller timeout that happens on RPi and
RPi 2.
Discussed with: ian (some time ago)
Diffstat (limited to 'sys/dev/sdhci/sdhci.h')
| -rw-r--r-- | sys/dev/sdhci/sdhci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/dev/sdhci/sdhci.h b/sys/dev/sdhci/sdhci.h index b7d1960..3c27d0c 100644 --- a/sys/dev/sdhci/sdhci.h +++ b/sys/dev/sdhci/sdhci.h @@ -271,6 +271,7 @@ struct sdhci_slot { #define SDHCI_HAVE_DMA 1 #define SDHCI_PLATFORM_TRANSFER 2 u_char version; + int timeout; /* Transfer timeout */ uint32_t max_clk; /* Max possible freq */ uint32_t timeout_clk; /* Timeout freq */ bus_dma_tag_t dmatag; |
