On 01/04/2022 18:51, cy_huang(黃啟原) wrote: > > 於 五，2022-04-01 於 17:42 +0200，Krzysztof Kozlowski 提到： >> Hi, >> >> Not tested. >> >> Follow up of discussion: >> https://lore.kernel.org/all/2d124d53-1f36-5315-3877-af8f8ad5f824@xxxxxxxxxx/#t >> <https://lore.kernel.org/all/2d124d53-1f36-5315-3877-af8f8ad5f824@xxxxxxxxxx/#t >> > > > If RT4801 enable-gpio both go from high to low, the voltage reg will be > reset, and I2C cannot be accessibele. > This patch can be used to individually control enable for DSVP and DSVN, > but the above i2c behavior is not considered. > You can check rt4801_enable/rt4801_disable for the details. Ah, so this is why this custom enable methods is there (pus bitmap etc). Then the core ena_gpiod cannot be used, although still we want to move on from two GPIOs in one enable-gpios property. Best regards, Krzysztof
