1.. SPDX-License-Identifier: GPL-2.0 2 3The Rockchip Image Signal Processor Driver (rkisp1) 4=================================================== 5 6Versions and their differences 7------------------------------ 8 9The rkisp1 block underwent some changes between SoC implementations. 10The vendor designates them as: 11 12- V10: used at least in rk3288 and rk3399 13- V11: declared in the original vendor code, but not used 14- V12: used at least in rk3326 and px30 15- V13: used at least in rk1808 16- V20: used in rk3568 and beyond 17 18Right now the kernel supports rkisp1 implementations based 19on V10 and V12 variants. V11 does not seem to be actually used 20and V13 will need some more additions but isn't researched yet, 21especially as it seems to be limited to the rk1808 which hasn't 22reached much market spread. 23 24V20 on the other hand will probably be used in future SoCs and 25has seen really big changes in the vendor kernel, so will need 26quite a bit of research. 27 28Changes from V10 to V12 29----------------------- 30 31- V12 supports a new CSI-host implementation but can still 32 also use the same implementation from V10 33- The module for lens shading correction got changed 34 from 12bit to 13bit width 35- The AWB and AEC modules got replaced to support finer 36 grained data collection 37 38Changes from V12 to V13 39----------------------- 40 41The list for V13 is incomplete and needs further investigation. 42 43- V13 does not support the old CSI-host implementation anymore 44