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From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: Mathias Nyman <mathias.nyman@intel.com>, Felipe Balbi <balbi@kernel.org>, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Rob Herring
 <robh+dt@kernel.org>, Andy Gross <agross@kernel.org>, Bjorn Andersson
 <bjorn.andersson@linaro.org>, Manu Gautam <mgautam@codeaurora.org>
Subject: [PATCH 17/20] dt-bindings: usb: qcom,dwc3: Validate DWC3 sub-node
Date: Wed, 14 Oct 2020 13:13:59 +0300
Message-ID: <20201014101402.18271-18-Sergey.Semin@baikalelectronics.ru>
In-Reply-To: <20201014101402.18271-1-Sergey.Semin@baikalelectronics.ru>
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Cc: devicetree@vger.kernel.org, linux-mips@vger.kernel.org,
 Neil Armstrong <narmstrong@baylibre.com>, Kevin Hilman <khilman@baylibre.com>,
 Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
 linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
 Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
 Serge Semin <fancer.lancer@gmail.com>,
 Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
 Serge Semin <Sergey.Semin@baikalelectronics.ru>,
 Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
 linux-arm-msm@vger.kernel.org, linux-snps-arc@lists.infradead.org,
 linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org,
 Roger Quadros <rogerq@ti.com>
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 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

Qualcomm msm8996/sc7180/sdm845 DWC3 compatible DT nodes are supposed to
have a DWC USB3 compatible sub-node to describe a fully functioning USB
interface. Let's use the available DWC USB3 DT schema to validate the
Qualcomm DWC3 sub-nodes.

Note since the generic DWC USB3 DT node is supposed to be named as generic
USB HCD ("^usb(@.*)?") one we have to accordingly fix the sub-nodes name
regexp and fix the DT node example.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>

---

Changelog v2:
- Discard the "^dwc3@[0-9a-f]+$" nodes from being acceptable as sub-nodes.
---
 Documentation/devicetree/bindings/usb/qcom,dwc3.yaml | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
index dac10848dd7f..8f8d781e73a0 100644
--- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
@@ -103,11 +103,8 @@ properties:
 # Required child node:
 
 patternProperties:
-  "^dwc3@[0-9a-f]+$":
-    type: object
-    description:
-      A child node must exist to represent the core DWC3 IP block
-      The content of the node is defined in dwc3.txt.
+  "^usb@[0-9a-f]+$":
+    $ref: snps,dwc3.yaml#
 
 required:
   - compatible
@@ -160,7 +157,7 @@ examples:
 
             resets = <&gcc GCC_USB30_PRIM_BCR>;
 
-            dwc3@a600000 {
+            usb@a600000 {
                 compatible = "snps,dwc3";
                 reg = <0 0x0a600000 0 0xcd00>;
                 interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.27.0