linux-kernel - [PATCH v3 13/14] dt-bindings: mtd: nand-controller: Fix matching with size-cells==1

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Message-Id: <20200904152404.20636-14-krzk@kernel.org>
Date:   Fri,  4 Sep 2020 17:24:03 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Rob Herring <robh+dt@...nel.org>, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-pwm@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-watchdog@...r.kernel.org
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Guenter Roeck <linux@...ck-us.net>,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH v3 13/14] dt-bindings: mtd: nand-controller: Fix matching with size-cells==1

Most of Freescale/NXP GPMI device trees use size-cells==1 (even when
actually not needed except few boards).  This fixes dtbs_check warnings
like:

    arch/arm64/boot/dts/freescale/imx8mm-beacon-kit.dt.yaml: nand-controller@...02000: #size-cells:0:0: 0 was expected

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 Documentation/devicetree/bindings/mtd/nand-controller.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
index 40fc5b0b2b8c..0879e1108837 100644
--- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml
+++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
@@ -34,7 +34,10 @@ properties:
     const: 1
 
   "#size-cells":
-    const: 0
+    description:
+      Depends on your controller. Put zero unless you need a mapping between CS
+      lines and dedicated memory regions.
+    enum: [0, 1]
 
   ranges: true
 
-- 
2.17.1