linux-kernel - [PATCH v5 1/6] dt-bindings: gpio-mmio: Correct opencores GPIO

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Message-ID: <20260114151328.3827992-2-shorne@gmail.com>
Date: Wed, 14 Jan 2026 15:13:10 +0000
From: Stafford Horne <shorne@...il.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Linux OpenRISC <linux-openrisc@...r.kernel.org>,
	devicetree <devicetree@...r.kernel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Stafford Horne <shorne@...il.com>,
	Linus Walleij <linusw@...nel.org>,
	Bartosz Golaszewski <brgl@...nel.org>,
	linux-gpio@...r.kernel.org
Subject: [PATCH v5 1/6] dt-bindings: gpio-mmio: Correct opencores GPIO

In commit f48b5e8bc2e1 ("dt-bindings: gpio-mmio: Add compatible
string for opencores,gpio") we marked opencores,gpio to be allowed with
brcm,bcm6345-gpio. This was wrong, opencores,gpio is not hardware
equivalent to brcm,bcm6345-gpio. It has a different register map and
is 8-bit vs braodcom which is 32-bit.  Change opencores,gpio to be a
separate compatible string for MMIO GPIO.

Fixes: f48b5e8bc2e1 ("dt-bindings: gpio-mmio: Add compatible string for opencores,gpio")
Signed-off-by: Stafford Horne <shorne@...il.com>
---
Since v4:
 - New patch.
 - Rebased old patch and rewrote commit message.

 .../devicetree/bindings/gpio/gpio-mmio.yaml      | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml b/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml
index 7ee40b9bc562..a8823ca65e78 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml
+++ b/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml
@@ -18,16 +18,12 @@ description:
 
 properties:
   compatible:
-    oneOf:
-      - enum:
-          - brcm,bcm6345-gpio
-          - ni,169445-nand-gpio
-          - wd,mbl-gpio # Western Digital MyBook Live memory-mapped GPIO controller
-          - intel,ixp4xx-expansion-bus-mmio-gpio
-      - items:
-          - enum:
-              - opencores,gpio
-          - const: brcm,bcm6345-gpio
+    enum:
+      - brcm,bcm6345-gpio
+      - ni,169445-nand-gpio
+      - wd,mbl-gpio # Western Digital MyBook Live memory-mapped GPIO controller
+      - intel,ixp4xx-expansion-bus-mmio-gpio
+      - opencores,gpio
 
   big-endian: true
 
-- 
2.51.0