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1.. SPDX-License-Identifier: GPL-2.02 3The Rockchip Image Signal Processor Driver (rkisp1)4===================================================5 6Versions and their differences7------------------------------8 9The rkisp1 block underwent some changes between SoC implementations.10The vendor designates them as:11 12- V10: used at least in rk3288 and rk339913- V11: declared in the original vendor code, but not used14- V12: used at least in rk3326 and px3015- V13: used at least in rk180816- V20: used in rk3568 and beyond17 18Right now the kernel supports rkisp1 implementations based19on V10 and V12 variants. V11 does not seem to be actually used20and V13 will need some more additions but isn't researched yet,21especially as it seems to be limited to the rk1808 which hasn't22reached much market spread.23 24V20 on the other hand will probably be used in future SoCs and25has seen really big changes in the vendor kernel, so will need26quite a bit of research.27 28Changes from V10 to V1229-----------------------30 31- V12 supports a new CSI-host implementation but can still32 also use the same implementation from V1033- The module for lens shading correction got changed34 from 12bit to 13bit width35- The AWB and AEC modules got replaced to support finer36 grained data collection37 38Changes from V12 to V1339-----------------------40 41The list for V13 is incomplete and needs further investigation.42 43- V13 does not support the old CSI-host implementation anymore44