linux-kernel - [PATCH v2 1/2] dt-bindings: clock: samsung: Document Exynos850 CMU

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Date:   Sat, 23 Oct 2021 01:45:55 +0300
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     Sumit Semwal <sumit.semwal@...aro.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: clock: samsung: Document Exynos850 CMU_APM

CMU_APM generates clocks for APM IP-core (Active Power Management). In
particular it generates RTC clocks, which are needed to enable rtc-s3c
driver on Exynos850 SoC.

Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
---
Changes in v2:
  - Added R-b tag by Krzysztof Kozlowski
  - Added Ack by Chanwoo Choi

 .../clock/samsung,exynos850-clock.yaml        | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
index 7f8c91a29b91..5618cfa62f80 100644
--- a/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
@@ -32,6 +32,7 @@ properties:
   compatible:
     enum:
       - samsung,exynos850-cmu-top
+      - samsung,exynos850-cmu-apm
       - samsung,exynos850-cmu-core
       - samsung,exynos850-cmu-dpu
       - samsung,exynos850-cmu-hsi
@@ -68,6 +69,24 @@ allOf:
           items:
             - const: oscclk
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos850-cmu-apm
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+            - description: CMU_APM bus clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: dout_clkcmu_apm_bus
+
   - if:
       properties:
         compatible:
-- 
2.30.2