arm: allwinner: aw_mmc: Check if the regulator support the voltage
Don't blindy say that we support both 3.3V and 1.8V. If we have a regulator for the data lines, check that the voltage is supported before adding the signaling caps. If we don't have a regulator, just assume that the data lines are 3.3V This unbreak eMMC on some allwinner boards. Reported by: ganbold MFC after: 1 month X-MFC-With: r354396
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=354397
@ -511,7 +511,13 @@ aw_mmc_attach(device_t dev)
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MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 |
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MMC_CAP_UHS_DDR50 | MMC_CAP_MMC_DDR52;
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sc->aw_host.caps |= MMC_CAP_SIGNALING_330 | MMC_CAP_SIGNALING_180;
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if (sc->aw_reg_vqmmc != NULL) {
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if (regulator_check_voltage(sc->aw_reg_vqmmc, 1800000) == 0)
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sc->aw_host.caps |= MMC_CAP_SIGNALING_180;
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if (regulator_check_voltage(sc->aw_reg_vqmmc, 3300000) == 0)
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sc->aw_host.caps |= MMC_CAP_SIGNALING_330;
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} else
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sc->aw_host.caps |= MMC_CAP_SIGNALING_330;
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if (bus_width >= 4)
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sc->aw_host.caps |= MMC_CAP_4_BIT_DATA;
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