MLK-20483 arm64: dts: Add lpspi2 and its slave dts files for imx8qxp

For lpspi test, add these two features, use lpspi2 without cs-gpio.
Still support spi-nor using lpspi0 with cs-gpio mode.

- fsl-imx8dx.dtsi:
	Add node to support lpspi2.
- fsl-imx8qxp-lpddr4-arm2-lpspi.dts:
	Add lpspi2 support for imx8qxp-lpddr4-arm2 board.
- fsl-imx8qxp-lpddr4-arm2-lpspi-slave.dts:
	Enable spi slave mode for lpspi2.

NOTE: lpspi2 of imx8qxp-lpddr4-arm2 uses the same pins with lpspi3 of
imx8qm-lpddr4-arm2 on Base Board.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8qxp-lpddr4-arm2-lpspi-slave.dts b/arch/arm64/boot/dts/freescale/fsl-imx8qxp-lpddr4-arm2-lpspi-slave.dts
new file mode 100644
index 000000000000..7f3cf7082a93
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8qxp-lpddr4-arm2-lpspi-slave.dts
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2017-2018 NXP
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "fsl-imx8qxp-lpddr4-arm2-lpspi.dts"
+
+/delete-node/&spidev0;
+
+&lpspi2 {
+	spi-slave;
+};