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Get frequency from "clock-frequency" property of "/axi/sdhci" FDT node

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This commit is contained in:
gonzo 2012-11-30 02:32:37 +00:00
parent c1fa64e79e
commit e7bfe2f92c
1 changed files with 14 additions and 1 deletions
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15
sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
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@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$");
#include <machine/frame.h>
#include <machine/intr.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
@ -66,6 +67,8 @@ __FBSDID("$FreeBSD$");
#include <dev/sdhci/sdhci.h>
#include "sdhci_if.h"
#define BCM2835_DEFAULT_SDHCI_FREQ 50
#define DEBUG
#ifdef DEBUG
@ -129,10 +132,20 @@ bcm_sdhci_attach(device_t dev)
{
struct bcm_sdhci_softc *sc = device_get_softc(dev);
int rid, err;
phandle_t node;
pcell_t cell;
int default_freq;
sc->sc_dev = dev;
sc->sc_req = NULL;
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 = (int)fdt32_to_cpu(cell)/1000000;
dprintf("SDHCI frequency: %dMHz\n", default_freq);
mtx_init(&sc->sc_mtx, "bcm sdhci", "sdhci", MTX_DEF);
rid = 0;
@ -168,7 +181,7 @@ bcm_sdhci_attach(device_t dev)
}
sc->sc_slot.caps = SDHCI_CAN_VDD_330 | SDHCI_CAN_VDD_180 | SDHCI_CAN_DO_HISPD;
sc->sc_slot.caps |= (50 << SDHCI_CLOCK_BASE_SHIFT);
sc->sc_slot.caps |= (default_freq << SDHCI_CLOCK_BASE_SHIFT);
sc->sc_slot.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
| SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
| SDHCI_QUIRK_MISSING_CAPS;