ao-secure node can be used to get information about the board, so, for example, using show_board_info() we can get following information for board with Meson A1 SoC:
SoC: Amlogic Meson A1 (A113L) Revision 2c:a (1:a)
Signed-off-by: Alexey Romanov avromanov@salutedevices.com --- arch/arm/dts/meson-a1.dtsi | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm/dts/meson-a1.dtsi b/arch/arm/dts/meson-a1.dtsi index e6e72d4004..e3a42c5b24 100644 --- a/arch/arm/dts/meson-a1.dtsi +++ b/arch/arm/dts/meson-a1.dtsi @@ -129,6 +129,12 @@ compatible = "amlogic,meson-rng"; reg = <0x0 0x5118 0x0 0x4>; }; + + sec_AO: ao-secure@5a20 { + compatible = "amlogic,meson-gx-ao-secure", "syscon"; + reg = <0x0 0x5a20 0x0 0x140>; + amlogic,has-chip-id; + }; };
gic: interrupt-controller@ff901000 {