@@ -12,14 +12,17 @@ maintainers:
properties:
compatible:
- const: samsung,exynos5250-trng
+ enum:
+ - samsung,exynos5250-trng
+ - samsung,exynos850-trng
clocks:
- maxItems: 1
+ minItems: 1
+ maxItems: 2
clock-names:
- items:
- - const: secss
+ minItems: 1
+ maxItems: 2
reg:
maxItems: 1
@@ -30,6 +33,35 @@ required:
- clock-names
- reg
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: samsung,exynos850-trng
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: SSS (Security Sub System) operating clock
+ - description: SSS (Security Sub System) bus clock
+
+ clock-names:
+ items:
+ - const: secss
+ - const: pclk
+
+ else:
+ properties:
+ clocks:
+ items:
+ - description: SSS (Security Sub System) operating clock
+
+ clock-names:
+ items:
+ - const: secss
+
additionalProperties: false
examples:
The TRNG block in Exynos850 is pretty much the same as in Exynos5250, but there are two clocks that has to be controlled to make it work: 1. Functional (operating) clock: called ACLK in Exynos850, the same as "secss" clock in Exynos5250 2. Interface (bus) clock: called PCLK in Exynos850. It has to be enabled in order to access TRNG registers Document Exynos850 compatible and the related clock changes. Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- Changes in v3: - Added R-b tag from Krzysztof Changes in v2: - Removed example added in v1 .../bindings/rng/samsung,exynos5250-trng.yaml | 40 +++++++++++++++++-- 1 file changed, 36 insertions(+), 4 deletions(-)