1*4882a593Smuzhiyun# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2*4882a593Smuzhiyun%YAML 1.2 3*4882a593Smuzhiyun--- 4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/rng/arm-cctrng.yaml# 5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml# 6*4882a593Smuzhiyun 7*4882a593Smuzhiyuntitle: Arm TrustZone CryptoCell TRNG engine 8*4882a593Smuzhiyun 9*4882a593Smuzhiyunmaintainers: 10*4882a593Smuzhiyun - Hadar Gat <hadar.gat@arm.com> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyundescription: |+ 13*4882a593Smuzhiyun Arm TrustZone CryptoCell TRNG (True Random Number Generator) engine. 14*4882a593Smuzhiyun 15*4882a593Smuzhiyunproperties: 16*4882a593Smuzhiyun compatible: 17*4882a593Smuzhiyun enum: 18*4882a593Smuzhiyun - arm,cryptocell-713-trng 19*4882a593Smuzhiyun - arm,cryptocell-703-trng 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun interrupts: 22*4882a593Smuzhiyun maxItems: 1 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun reg: 25*4882a593Smuzhiyun maxItems: 1 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun arm,rosc-ratio: 28*4882a593Smuzhiyun description: 29*4882a593Smuzhiyun Arm TrustZone CryptoCell TRNG engine has 4 ring oscillators. 30*4882a593Smuzhiyun Sampling ratio values for these 4 ring oscillators. (from calibration) 31*4882a593Smuzhiyun $ref: /schemas/types.yaml#/definitions/uint32-array 32*4882a593Smuzhiyun maxItems: 4 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun clocks: 35*4882a593Smuzhiyun maxItems: 1 36*4882a593Smuzhiyun 37*4882a593Smuzhiyunrequired: 38*4882a593Smuzhiyun - compatible 39*4882a593Smuzhiyun - interrupts 40*4882a593Smuzhiyun - reg 41*4882a593Smuzhiyun - arm,rosc-ratio 42*4882a593Smuzhiyun 43*4882a593SmuzhiyunadditionalProperties: false 44*4882a593Smuzhiyun 45*4882a593Smuzhiyunexamples: 46*4882a593Smuzhiyun - | 47*4882a593Smuzhiyun arm_cctrng: rng@60000000 { 48*4882a593Smuzhiyun compatible = "arm,cryptocell-713-trng"; 49*4882a593Smuzhiyun interrupts = <0 29 4>; 50*4882a593Smuzhiyun reg = <0x60000000 0x10000>; 51*4882a593Smuzhiyun arm,rosc-ratio = <5000 1000 500 0>; 52*4882a593Smuzhiyun }; 53