arm64: dts: rockchip: Document unused device on i2c1

Update the i2c1 bus noting that the unknown/unused device at 0x3c is an
iSmartWare SW2001 "encryption IC".

Based on the documentation I was able to find, this IC appears to be
used to authenticate a device for certain programs to ensure they only
run on authorized devices as a form of digital rights management.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20250604024119.381337-1-macroalpha82@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi
index 233eade30f211017e4db301cf67f0c66e8bef38f..645db9d3d2972d3a0b30d9aea7d4c831f5a3c74f 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi
@@ -469,7 +469,7 @@
 };
 
 &i2c1 {
-       /* Unknown/unused device at 0x3c */
+       /* Unused iSmartWare SW2001 encryption device at 0x3c */
        status = "disabled";
 };