linux-kernel - [PATCH v5 12/12] arm64: dts: ls1028a-rdb: Add a spidev node for the mikroBUS

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Date:   Wed, 18 Mar 2020 02:16:03 +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 v5 12/12] 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>
---
Changes in v5:
None.

Changes in v4:
None.

Changes in v3:
None.

Changes in v2:
Change compatible string for spidev node.

 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