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mmc: sdhci: check voltage range only on regulators aware of voltage value
Some regulators don't report any voltage values, so checking supported voltage range results in disabling all SDHCI_CAN_VDD_* flags and registration failure. This patch finally provides a correct fix for the registration of SDHCI driver with all possible voltage regulators: dummy, fixed and regulated without using regulator_count_voltages() hacks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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1 changed files with 5 additions and 1 deletions
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@ -2976,7 +2976,11 @@ int sdhci_add_host(struct sdhci_host *host)
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}
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#ifdef CONFIG_REGULATOR
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if (host->vmmc) {
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/*
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* Voltage range check makes sense only if regulator reports
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* any voltage value.
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*/
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if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) {
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ret = regulator_is_supported_voltage(host->vmmc, 2700000,
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3600000);
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if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
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