diff options
| author | Sam Protsenko <semen.protsenko@linaro.org> | 2024-06-20 18:13:34 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2024-06-28 11:35:48 +1000 |
| commit | 70003f512c5ff488081460c664340b11b57b1293 (patch) | |
| tree | 61e1bf5b0eda013acc5ab44e103e034efbdd373d /Documentation/devicetree/bindings/rng | |
| parent | ccacbbc3176277bbfc324f85fa827d1a2656bedf (diff) | |
dt-bindings: rng: Add Exynos850 support to exynos-trng
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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'Documentation/devicetree/bindings/rng')
| -rw-r--r-- | Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml index 765d9f9edd6e..1a71935d8a19 100644 --- a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml +++ b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml @@ -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: |