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head/sys/dev/mmc/host/dwmmc.c
| Show First 20 Lines • Show All 451 Lines • ▼ Show 20 Lines | if ((len = OF_getproplen(node, "clock-frequency")) > 0) { | ||||
| OF_getencprop(node, "clock-frequency", dts_value, len); | OF_getencprop(node, "clock-frequency", dts_value, len); | ||||
| bus_hz = dts_value[0]; | bus_hz = dts_value[0]; | ||||
| } | } | ||||
| #ifdef EXT_RESOURCES | #ifdef EXT_RESOURCES | ||||
| /* IP block reset is optional */ | /* IP block reset is optional */ | ||||
| error = hwreset_get_by_ofw_name(sc->dev, 0, "reset", &sc->hwreset); | error = hwreset_get_by_ofw_name(sc->dev, 0, "reset", &sc->hwreset); | ||||
| if (error != 0 && error != ENOENT) | if (error != 0 && | ||||
| error != ENOENT && | |||||
| error != ENODEV) { | |||||
| device_printf(sc->dev, "Cannot get reset\n"); | device_printf(sc->dev, "Cannot get reset\n"); | ||||
| goto fail; | |||||
| } | |||||
| /* vmmc regulator is optional */ | /* vmmc regulator is optional */ | ||||
| error = regulator_get_by_ofw_property(sc->dev, 0, "vmmc-supply", | error = regulator_get_by_ofw_property(sc->dev, 0, "vmmc-supply", | ||||
| &sc->vmmc); | &sc->vmmc); | ||||
| if (error != 0 && error != ENOENT) | if (error != 0 && | ||||
| error != ENOENT && | |||||
| error != ENODEV) { | |||||
| device_printf(sc->dev, "Cannot get regulator 'vmmc-supply'\n"); | device_printf(sc->dev, "Cannot get regulator 'vmmc-supply'\n"); | ||||
| goto fail; | |||||
| } | |||||
| /* vqmmc regulator is optional */ | /* vqmmc regulator is optional */ | ||||
| error = regulator_get_by_ofw_property(sc->dev, 0, "vqmmc-supply", | error = regulator_get_by_ofw_property(sc->dev, 0, "vqmmc-supply", | ||||
| &sc->vqmmc); | &sc->vqmmc); | ||||
| if (error != 0 && error != ENOENT) | if (error != 0 && | ||||
| error != ENOENT && | |||||
| error != ENODEV) { | |||||
| device_printf(sc->dev, "Cannot get regulator 'vqmmc-supply'\n"); | device_printf(sc->dev, "Cannot get regulator 'vqmmc-supply'\n"); | ||||
| goto fail; | |||||
| } | |||||
| /* Assert reset first */ | /* Assert reset first */ | ||||
| if (sc->hwreset != NULL) { | if (sc->hwreset != NULL) { | ||||
| error = hwreset_assert(sc->hwreset); | error = hwreset_assert(sc->hwreset); | ||||
| if (error != 0) { | if (error != 0) { | ||||
| device_printf(sc->dev, "Cannot assert reset\n"); | device_printf(sc->dev, "Cannot assert reset\n"); | ||||
| goto fail; | goto fail; | ||||
| } | } | ||||
| } | } | ||||
| /* BIU (Bus Interface Unit clock) is optional */ | /* BIU (Bus Interface Unit clock) is optional */ | ||||
| error = clk_get_by_ofw_name(sc->dev, 0, "biu", &sc->biu); | error = clk_get_by_ofw_name(sc->dev, 0, "biu", &sc->biu); | ||||
| if (error != 0 && error != ENOENT) | if (error != 0 && | ||||
| error != ENOENT && | |||||
| error != ENODEV) { | |||||
| device_printf(sc->dev, "Cannot get 'biu' clock\n"); | device_printf(sc->dev, "Cannot get 'biu' clock\n"); | ||||
| goto fail; | |||||
| } | |||||
| if (sc->biu) { | if (sc->biu) { | ||||
| error = clk_enable(sc->biu); | error = clk_enable(sc->biu); | ||||
| if (error != 0) { | if (error != 0) { | ||||
| device_printf(sc->dev, "cannot enable biu clock\n"); | device_printf(sc->dev, "cannot enable biu clock\n"); | ||||
| goto fail; | goto fail; | ||||
| } | } | ||||
| } | } | ||||
| /* | /* | ||||
| * CIU (Controller Interface Unit clock) is mandatory | * CIU (Controller Interface Unit clock) is mandatory | ||||
| * if no clock-frequency property is given | * if no clock-frequency property is given | ||||
| */ | */ | ||||
| error = clk_get_by_ofw_name(sc->dev, 0, "ciu", &sc->ciu); | error = clk_get_by_ofw_name(sc->dev, 0, "ciu", &sc->ciu); | ||||
| if (error != 0 && error != ENOENT) | if (error != 0 && | ||||
| error != ENOENT && | |||||
| error != ENODEV) { | |||||
| device_printf(sc->dev, "Cannot get 'ciu' clock\n"); | device_printf(sc->dev, "Cannot get 'ciu' clock\n"); | ||||
| goto fail; | |||||
| } | |||||
| if (sc->ciu) { | if (sc->ciu) { | ||||
| if (bus_hz != 0) { | if (bus_hz != 0) { | ||||
| error = clk_set_freq(sc->ciu, bus_hz, 0); | error = clk_set_freq(sc->ciu, bus_hz, 0); | ||||
| if (error != 0) | if (error != 0) | ||||
| device_printf(sc->dev, | device_printf(sc->dev, | ||||
| "cannot set ciu clock to %u\n", bus_hz); | "cannot set ciu clock to %u\n", bus_hz); | ||||
| } | } | ||||
| ▲ Show 20 Lines • Show All 709 Lines • Show Last 20 Lines | |||||