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

Fetch the SDHCI frequency from videocore (our prefered source) and only if

Browse Source 
it fails, fetch the clock-frequency from DTB.

If both methods fail, use the hardcoded default.
This commit is contained in:
Luiz Otavio O Souza 2015-04-22 18:35:02 +00:00
parent cb1ecf6cca
commit b7fbc36963
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=281863
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

@ -181,17 +181,16 @@ bcm_sdhci_attach(device_t dev)
if (err == 0) {
/* Convert to MHz */
default_freq /= 1000000;
if (bootverbose)
device_printf(dev, "default frequency: %dMHz\n",
default_freq);
}
if (default_freq == 0) {
node = ofw_bus_get_node(sc->sc_dev);
if ((OF_getencprop(node, "clock-frequency", &cell,
sizeof(cell))) > 0)
default_freq = cell / 1000000;
}
if (default_freq == 0)
default_freq = BCM2835_DEFAULT_SDHCI_FREQ;
node = ofw_bus_get_node(sc->sc_dev);
if ((OF_getprop(node, "clock-frequency", &cell, sizeof(cell))) > 0)
default_freq = fdt32_to_cpu(cell)/1000000;
if (bootverbose)
device_printf(dev, "SDHCI frequency: %dMHz\n", default_freq);