[0/2] Input: cyttsp5 - add vddio regulator

Message ID 20221117190507.87535-1-linmengbo0689@protonmail.com
Headers
Series Input: cyttsp5 - add vddio regulator |

Message

Lin, Meng-Bo Nov. 17, 2022, 7:05 p.m. UTC
  The Samsung touchscreen controllers are often used with external pull-up
for the interrupt line and the I2C lines, so we might need to enable
a regulator to bring the lines into usable state. Otherwise, this might
cause spurious interrupts and reading from I2C will fail.

Implement support for a "vddio-supply" that is enabled by the cyttsp5
driver so that the regulator gets enabled when needed.