linux-kernel - [PATCH 2/3] dt-bindings: iommu: renesas,ipmmu-vmsa: Make 'power-domains' conditionally required

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Date:   Tue,  2 Feb 2021 14:55:43 -0600
From:   Rob Herring <robh@...nel.org>
To:     devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Stephen Boyd <sboyd@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Daniel Palmer <daniel@...ngy.jp>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Andrew Jeffery <andrew@...id.au>,
        Joel Stanley <joel@....id.au>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Vincent Cheng <vincent.cheng.xh@...esas.com>,
        linux-clk@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-i2c@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-watchdog@...r.kernel.org
Subject: [PATCH 2/3] dt-bindings: iommu: renesas,ipmmu-vmsa: Make 'power-domains' conditionally required

Fixing the compatible string typos results in an error in the example:

Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.example.dt.yaml:
  iommu@...51000: 'power-domains' is a required property

Based on the dts files, a 'power-domains' property only exists on Gen 3
which can be conditioned on !renesas,ipmmu-vmsa.

Cc: Joerg Roedel <joro@...tes.org>
Cc: Will Deacon <will@...nel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Cc: iommu@...ts.linux-foundation.org
Signed-off-by: Rob Herring <robh@...nel.org>
---
 .../bindings/iommu/renesas,ipmmu-vmsa.yaml           | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.yaml b/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.yaml
index 349633108bbd..dda44976acc1 100644
--- a/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.yaml
+++ b/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.yaml
@@ -76,7 +76,6 @@ required:
   - compatible
   - reg
   - '#iommu-cells'
-  - power-domains
 
 oneOf:
   - required:
@@ -86,6 +85,17 @@ oneOf:
 
 additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          not:
+            contains:
+              const: renesas,ipmmu-vmsa
+    then:
+      required:
+        - power-domains
+
 examples:
   - |
     #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
-- 
2.27.0