Hi, Currently the Jetson TK1 is failing to get regulators for MMC with at least my regulator tree and probably -next also due to: [ 1.665750] as3722 4-0040: AS3722 with revision 0x1 found [ 1.682945] +VDDIO_SDMMC3: failed to get the current voltage(-22) [ 1.689135] as3722-regulator as3722-regulator: regulator 13 register failed -22 [ 1.697593] as3722-regulator: probe of as3722-regulator failed with error -22 The get voltage operation here is just a simple mapping of a bitfield in the regmap which suggests that the underlying problem is somewhere further down the stack like the MFD or I2C drivers. The error is -EINVAL which suggests something like the register not being marked as readable but the _VOLTAGE_REG registers appear to be marked as readable in the MFD. Full log for one boot at: https://storage.kernelci.org/broonie-regulator/v4.6-rc1-24-ga7e614dd1f91/arm-multi_v7_defconfig+CONFIG_SMP=n/lab-mhart/boot-tegra124-jetson-tk1.html
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