d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Roll back change of frequency for initialization sequence since it

Browse Source 
seems to cause more problems then previous behavior: it either breaks
initilization sequence in other places or uncovers problems with
high-speed mode timing for SDHCI 3.0
This commit is contained in:
gonzo 2013-02-19 20:33:55 +00:00
parent ed091f2207
commit f8a5d15b83
1 changed files with 6 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
View File

@ -78,7 +78,12 @@ __FBSDID("$FreeBSD$");
#define dprintf(fmt, args...)
#endif
static int bcm2835_sdhci_min_freq = 8000000;
/*
* Arasan HC seems to have problem with Data CRC on lower frequencies.
* Use this tunable to cap intilization sequence frequency at higher
* value. Default is standard 400KHz
*/
static int bcm2835_sdhci_min_freq = 400000;
static int bcm2835_sdhci_hs = 1;
TUNABLE_INT("hw.bcm2835.sdhci.min_freq", &bcm2835_sdhci_min_freq);
@ -346,12 +351,6 @@ static uint32_t
bcm_sdhci_min_freq(device_t dev, struct sdhci_slot *slot)
{
/*
* Arasan HC seems to have problem with
* Data CRC on lower frequencies. Cap minimum
* frequncy at 8MHz (or whatever set via tunable)
* to work around this issue
*/
return bcm2835_sdhci_min_freq;
}