static int
ccm_attach(device_t dev)
{
struct ccm_softc *sc;
int reg;
int i;
sc = device_get_softc(dev);
sc->dev = dev;
if (bus_alloc_resources(dev, ccm_spec, sc->res)) {
device_printf(dev, "could not allocate resources\n");
return (ENXIO);
}
/* Memory interface */
sc->bst = rman_get_bustag(sc->res[0]);
sc->bsh = rman_get_bushandle(sc->res[0]);
/* Enable oscillator */
reg = READ4(sc, CCM_CCR);
reg |= (FIRC_EN | FXOSC_EN);
WRITE4(sc, CCM_CCR, reg);
/* Wait 10 times */
for (i = 0; i < 10; i++) {
if (READ4(sc, CCM_CSR) & FXOSC_RDY) {
device_printf(sc->dev, "On board oscillator is ready.\n");
break;
}
cpufunc_nullop();
}
/* Clock is on during all modes, except stop mode. */
for (i = 0; i < CCM_CCGRN; i++) {
WRITE4(sc, CCM_CCGR(i), 0xffffffff);
}
/* Enable ENET clocks */
reg = READ4(sc, CCM_CSCDR1);
reg |= (ENET_TS_EN | RMII_CLK_EN);
WRITE4(sc, CCM_CSCDR1, reg);
return (0);
}
void ccm_clock_gate_disable(enum ccm_clock_gate gr)
{
uint32_t offset = (uint32_t)gr / 16;
uint32_t gr_mask = 0x3 << ((gr % 16) * 2);
CCM_CCGR(offset * 4) &= ~gr_mask;
}
