linux-kernel - [PATCH 6/6] arm64: dts: ls1028a-rdb: Add a spidev node for the mikroBUS

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Date:   Mon,  9 Mar 2020 16:56:24 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     broonie@...nel.org
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        shawnguo@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org, eha@...f.com, angelo@...am.it,
        andrew.smirnov@...il.com, gustavo@...eddedor.com, weic@...dia.com,
        mhosny@...dia.com, michael@...le.cc, peng.ma@....com
Subject: [PATCH 6/6] arm64: dts: ls1028a-rdb: Add a spidev node for the mikroBUS

From: Vladimir Oltean <vladimir.oltean@....com>

For debugging, it is useful to have access to the DSPI controller
signals. On the reference design board, these are exported to either the
mikroBUS1 or mikroBUS2 connector (according to the CPLD register
BRDCFG3[SPI3]).

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
index bb7ba3bcbe56..43f403b30dae 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
@@ -83,6 +83,20 @@
 	};
 };
 
+&dspi2 {
+	bus-num = <2>;
+	status = "okay";
+
+	/* mikroBUS1 */
+	spidev@0 {
+		compatible = "spidev";
+		reg = <0>;
+		spi-max-frequency = <20000000>;
+		fsl,spi-cs-sck-delay = <100>;
+		fsl,spi-sck-cs-delay = <100>;
+	};
+};
+
 &esdhc {
 	sd-uhs-sdr104;
 	sd-uhs-sdr50;
-- 
2.17.1