[PATCH 2/3] arm: dts: imx6sx: Add entropy delay property

Vabhav Sharma vabhav.sharma at nxp.com
Mon May 30 11:09:23 PDT 2022


Add imx6sx entropy-delay property.

TRNG self test are run to determine the correct entropy delay.
firmware test is executed with different voltage and temperature to
identify the worst case value for entropy delay. after adding a margin
value(1000),entropy delay should be at least 12000.

Signed-off-by: Vabhav Sharma <vabhav.sharma at nxp.com>
Reviewed-by: Horia Geanta <horia.geanta at nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain at nxp.com>
---
 arch/arm/boot/dts/imx6sx.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
index fc6334336b3d..305fad35f5c4 100644
--- a/arch/arm/boot/dts/imx6sx.dtsi
+++ b/arch/arm/boot/dts/imx6sx.dtsi
@@ -864,6 +864,7 @@ aips2: bus at 2100000 {
 
 			crypto: crypto at 2100000 {
 				compatible = "fsl,sec-v4.0";
+				entropy-delay = <12000>;
 				#address-cells = <1>;
 				#size-cells = <1>;
 				reg = <0x2100000 0x10000>;
-- 
2.25.1




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