From: Josua Mayer <josua@solid-run.com>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Shawn Guo <shawnguo@kernel.org>, Frank Li <Frank.Li@nxp.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>, Andrew Lunn <andrew@lunn.ch>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>
Cc: Yazan Shhady <yazan.shhady@solid-run.com>,
Mikhail Anikin <mikhail.anikin@solid-run.com>,
Alexander Dahl <ada@thorsis.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
Vladimir Oltean <vladimir.oltean@nxp.com>,
Conor Dooley <conor.dooley@microchip.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
netdev@vger.kernel.org, Josua Mayer <josua@solid-run.com>
Subject: [PATCH v2 1/3] dt-bindings: net: dsa: nxp,sja1105: make spi-cpol optional for sja1110
Date: Thu, 09 Apr 2026 14:34:33 +0200 [thread overview]
Message-ID: <20260409-imx8dxl-sr-som-v2-1-83ff20629ba0@solid-run.com> (raw)
In-Reply-To: <20260409-imx8dxl-sr-som-v2-0-83ff20629ba0@solid-run.com>
Currently, the binding requires 'spi-cpha' for SJA1105 and 'spi-cpol'
for SJA1110.
However, the SJA1110 supports both SPI modes 0 and 2. Mode 2
(cpha=0, cpol=1) is used by the NXP LX2160 Bluebox 3.
On the SolidRun i.MX8DXL HummingBoard Telematics, mode 0 is stable,
while forcing mode 2 introduces CRC errors especially during bursts.
Drop the requirement on spi-cpol for SJA1110.
Fixes: af2eab1a8243 ("dt-bindings: net: nxp,sja1105: document spi-cpol/cpha")
Signed-off-by: Josua Mayer <josua@solid-run.com>
---
Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml | 2 --
1 file changed, 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
index 607b7fe8d28ee..0486489114cd8 100644
--- a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
@@ -143,8 +143,6 @@ allOf:
else:
properties:
spi-cpha: false
- required:
- - spi-cpol
unevaluatedProperties: false
--
2.51.0
next prev parent reply other threads:[~2026-04-09 12:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-09 12:34 [PATCH v2 0/3] arm64: dts: imx8dxl: Add SolidRun SoM and HummingBoard Josua Mayer
2026-04-09 12:34 ` Josua Mayer [this message]
2026-04-09 15:36 ` [PATCH v2 1/3] dt-bindings: net: dsa: nxp,sja1105: make spi-cpol optional for sja1110 Conor Dooley
2026-04-09 12:34 ` [PATCH v2 2/3] dt-bindings: arm: fsl: Add SolidRun i.MX8DXL SoM and HummingBoard Josua Mayer
2026-04-09 12:34 ` [PATCH v2 3/3] arm64: dts: imx8dxl: Add SolidRun " Josua Mayer
2026-04-09 12:46 ` Andrew Lunn
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