arm64: dts: marvell: add a comment on the cp110 slave node status

The cryptographic engine found on the cp110 slave is disabled by default
because of some known limitations. Add a comment to explain why it is
disabled by default.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi b/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi
index 7e98c155cc6a..385ac30d6012 100644
--- a/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi
@@ -234,6 +234,13 @@
                                                   "ring2", "ring3", "eip";
                                 clocks = <&cps_syscon0 1 26>;
                                 dma-mask = <0xff 0xffffffff>;
+                                /*
+                                 * The cryptographic engine found on the cp110
+                                 * master is enabled by default at the SoC
+                                 * level. Because it is not possible as of now
+                                 * to enable two cryptographic engines in
+                                 * parallel, disable this one by default.
+                                 */
                                 status = "disabled";
                         };
                 };