linux-kernel - [PATCH devicetree 2/2] arm64: dts: ls1028a-rdb: Add a spidev node for the mikroBUS

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Date:   Fri, 20 Mar 2020 18:13:46 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     shawnguo@...nel.org, robh+dt@...nel.org, mark.rutland@....com
Cc:     devicetree@...r.kernel.org, broonie@...nel.org,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        michael@...le.cc, peng.ma@....com
Subject: [PATCH devicetree 2/2] 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 6d05b76c2c7a..0d27b5667b8c 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 = "rohm,dh2228fv";
+		spi-max-frequency = <20000000>;
+		fsl,spi-cs-sck-delay = <100>;
+		fsl,spi-sck-cs-delay = <100>;
+		reg = <0>;
+	};
+};
+
 &esdhc {
 	sd-uhs-sdr104;
 	sd-uhs-sdr50;
-- 
2.17.1