linux-kernel - [RFC 1/2] dt-bindings: clk: versaclock5: Add load capacitance properties

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Date:   Wed,  6 Jan 2021 11:38:59 -0600
From:   Adam Ford <aford173@...il.com>
To:     linux-clk@...r.kernel.org
Cc:     aford@...conembedded.com, Adam Ford <aford173@...il.com>,
        Luca Ceresoli <luca@...aceresoli.net>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [RFC 1/2] dt-bindings: clk: versaclock5:  Add load capacitance properties

There are two registers which can set the load capacitance for
XTAL1 and XTAL2. These are optional registers when using an
external crystal.  Update the bindings to support them.

Signed-off-by: Adam Ford <aford173@...il.com>
---
 .../devicetree/bindings/clock/idt,versaclock5.yaml   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml b/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
index 2ac1131fd922..e5e55ffb266e 100644
--- a/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
+++ b/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
@@ -59,6 +59,18 @@ properties:
     minItems: 1
     maxItems: 2
 
+  idt,xtal1-load-femtofarads:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 9000
+    maximum: 25000
+    description: Optional loading capacitor for XTAL1
+
+  idt,xtal2-load-femtofarads:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 9000
+    maximum: 25000
+    description: Optional loading capacitor for XTAL2
+
 patternProperties:
   "^OUT[1-4]$":
     type: object
-- 
2.25.1