Re: [PATCH 2/2] ARM: dts: stm32: Auto-detect DHSOM with uSD level translator

2021-11-21 Thread Patrice CHOTARD
Hi Marek On 11/13/21 3:29 AM, Marek Vasut wrote: > The uSD level translator on DHSOM and Avenger96 are optional, however it > is possible to auto-detect it. This is done by setting SD CMD line high, > and then testing whether signal level on CK line matches the signal level > on CKIN line. If so,

[PATCH 2/2] ARM: dts: stm32: Auto-detect DHSOM with uSD level translator

2021-11-12 Thread Marek Vasut
The uSD level translator on DHSOM and Avenger96 are optional, however it is possible to auto-detect it. This is done by setting SD CMD line high, and then testing whether signal level on CK line matches the signal level on CKIN line. If so, the uSD level translator is present, otherwise it is not