linux-kernel - [PATCH 1/6] arm64: dts: freescale: tqma9352: Add partitions subnode to spi-nor

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Date: Tue, 23 Apr 2024 13:31:46 +0200
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>
Cc: Alexander Stein <alexander.stein@...tq-group.com>,
	linux@...tq-group.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/6] arm64: dts: freescale: tqma9352: Add partitions subnode to spi-nor

The bootloader adds MTD partitions in this subnode if present, or in the
spi-nor node itself otherwise. Direct children cause warnings like:
425e0000.spi: ofpart partition /soc@...us@...00000/spi@...e0000/flash@0/
  partition@...000 (/soc@...us@...00000/spi@...e0000/flash@0) #size-cells
  is wrongly set to <0>, assuming <1> for parsing partitions.

This is due flexspi node having #size-cells = <0>. Setting #size-cells in
MTD nodes itself is deprecated by mtd.yaml.
Fix all this by adding an empty partitions node which the bootloader will
fill with configured MTD partitions.

Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
index 9d2328c185c90..edbd8cad35bca 100644
--- a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
@@ -75,6 +75,12 @@ flash0: flash@0 {
 		spi-max-frequency = <62000000>;
 		spi-tx-bus-width = <4>;
 		spi-rx-bus-width = <4>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
 	};
 };
 
-- 
2.34.1