linux-kernel - [PATCH 1/2] dt-bindings: clk: versaclock5: Add optional load capacitance property

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Message-Id: <20210116215451.601498-1-aford173@gmail.com>
Date:   Sat, 16 Jan 2021 15:54:50 -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: [PATCH 1/2] dt-bindings: clk: versaclock5: Add optional load capacitance property

There are two registers which can set the load capacitance for
XTAL1 and XTAL2. These are optional registers when using an
external crystal.  Since XTAL1 and XTAL2 will set to the same value,
update the binding to support a single property called
xtal-load-femtofarads.

Signed-off-by: Adam Ford <aford173@...il.com>

diff --git a/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml b/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
index 2ac1131fd922..c268debe5b8d 100644
--- a/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
+++ b/Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
@@ -59,6 +59,12 @@ properties:
     minItems: 1
     maxItems: 2
 
+  idt,xtal-load-femtofarads:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 9000
+    maximum: 22760
+    description: Optional load capacitor for XTAL1 and XTAL2
+
 patternProperties:
   "^OUT[1-4]$":
     type: object
-- 
2.25.1