On 01/09/2022 15:41, B. Niedermayr wrote: > From: Benedikt Niedermayr <benedikt.niedermayr@xxxxxxxxxxx> > > There is currently no possibility for the gpmc to set either the > waitp-pin polarity or use the same wait-pin for different cs-regions. > > While the current implementation may fullfill most usecases, it may not > be sufficient for more complex setups (e.g. FPGA/ASIC interfaces), where > more complex interfacing options where possible. > > For example interfacing an ASIC which offers multiple cs-regions but > only one waitpin the current driver and dt-bindings are not sufficient. > > While using the same waitpin for different cs-regions worked for older > kernels (4.14) the omap-gpmc.c driver refused to probe (-EBUSY) with > newer kernels (>5.10). Please base your patches on a recent Linux kernel (judging by CC list this is something old) - either current RC or linux-next. Best regards, Krzysztof
