On 25-06-18, 13:06, Rob Herring wrote:

On Tue, Jun 19, 2018 at 03:24:29PM +0530, Vinod Koul wrote:

quoted

Later qcom chips support v2 of the prng, so add new compatible
qcom,prng-v2 for this.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
---

Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
 Documentation/devicetree/bindings/rng/qcom,prng.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rng/qcom,prng.txt b/Documentation/devicetree/bindings/rng/qcom,prng.txt
index 8e5853c2879b..03fd218bd21a 100644
--- a/Documentation/devicetree/bindings/rng/qcom,prng.txt
+++ b/Documentation/devicetree/bindings/rng/qcom,prng.txt

@@ -2,7 +2,8 @@ Qualcomm MSM pseudo random number generator.
 
 Required properties:
 
-- compatible  : should be "qcom,prng"
+- compatible  : should be "qcom,prng" for 8916 etc
+              : should be "qcom,prng-v2" for 8996 and later

Either use SoC specific compatibles or convince me 'v2' is a meaningful 
and specific enough version. Some other QC IP has x.y.z versioning for 
example.

The specs says QC RNG V2 :)

Said that Stephen suggested to make it qcom,prng-ee to point out that we
are pointing to an execution environment in the IP, so will do that
instead unless you have better idea

-- 
~Vinod