linux-kernel - [PATCH 1/4] dt-bindings: PCI: fu740-pci: fix missing clock-names

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Message-Id: <20220811203306.179744-2-mail@conchuod.ie>
Date:   Thu, 11 Aug 2022 21:33:04 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Daire McNamara <daire.mcnamara@...rochip.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Greentime Hu <greentime.hu@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Conor Dooley <conor.dooley@...rochip.com>
Cc:     linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: [PATCH 1/4] dt-bindings: PCI: fu740-pci: fix missing clock-names

From: Conor Dooley <conor.dooley@...rochip.com>

The commit in the fixes tag removed the clock-names property from the
SiFive FU740 PCI Controller dt-binding, but it was already in the dts
for the FU740. dtbs_check was not able to pick up on this at the time
but v2022.08 of dt-schema now can:

arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dtb: pcie@...000000: Unevaluated properties are not allowed ('clock-names' was unexpected)
        From schema: linux/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml

The Linux driver does not use this property, but outside of the kernel
this property may have users. Re-add the property and its "clocks"
dependency.

Fixes: b92225b034c0 ("dt-bindings: PCI: designware: Fix 'unevaluatedProperties' warnings")
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
I went back and forth on removing the property from the dts, but this
seems like the change that is more conservative..
---
 .../devicetree/bindings/pci/sifive,fu740-pcie.yaml          | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml b/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
index 195e6afeb169..c7a9a2dc0fa6 100644
--- a/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
@@ -51,6 +51,12 @@ properties:
     description: A phandle to the PCIe power up reset line.
     maxItems: 1
 
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: pcie_aux
+
   pwren-gpios:
     description: Should specify the GPIO for controlling the PCI bus device power on.
     maxItems: 1
-- 
2.37.1