Fetch the SDHCI frequency from videocore (our prefered source) and only if
it fails, fetch the clock-frequency from DTB. If both methods fail, use the hardcoded default.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=281863
@ -181,17 +181,16 @@ bcm_sdhci_attach(device_t dev)
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if (err == 0) {
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/* Convert to MHz */
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default_freq /= 1000000;
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if (bootverbose)
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device_printf(dev, "default frequency: %dMHz\n",
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default_freq);
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}
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if (default_freq == 0) {
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node = ofw_bus_get_node(sc->sc_dev);
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if ((OF_getencprop(node, "clock-frequency", &cell,
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sizeof(cell))) > 0)
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default_freq = cell / 1000000;
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}
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if (default_freq == 0)
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default_freq = BCM2835_DEFAULT_SDHCI_FREQ;
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node = ofw_bus_get_node(sc->sc_dev);
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if ((OF_getprop(node, "clock-frequency", &cell, sizeof(cell))) > 0)
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default_freq = fdt32_to_cpu(cell)/1000000;
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if (bootverbose)
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device_printf(dev, "SDHCI frequency: %dMHz\n", default_freq);
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