linux-kernel - [PATCH 2/4] dt-bindings: gpio: Add DW GPIO debounce clocks bindings

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Message-Id: <20200306132512.46E03803079F@mail.baikalelectronics.ru>
Date:   Fri, 6 Mar 2020 16:24:46 +0300
From:   <Sergey.Semin@...kalelectronics.ru>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        <linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/4] dt-bindings: gpio: Add DW GPIO debounce clocks bindings

From: Serge Semin <Sergey.Semin@...kalelectronics.ru>

Port A of the DW GPIO controller may optionally have a debounce
logic enabled if it was synthesized with corresponding functionality
enabled. In this case a dedicated reference clocks should be provided
to the node with "db" clock-names.

Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Paul Burton <paulburton@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
---
 Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml b/Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml
index d9bc12e9e515..8b510802f5bc 100644
--- a/Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml
@@ -31,12 +31,16 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 1
     items:
       - description: APB interface clock source
+      - description: DW GPIO debounce reference clock source
 
   clock-names:
+    minItems: 1
     items:
       - const: bus
+      - const: db
 
   resets:
     maxItems: 1
-- 
2.25.1