arm64: dts: marvell: use aliases for SPI busses on Armada 7K/8K

We are currently using the cell-index DT property to assign SPI bus
numbers. This property is specific to the spi-orion driver, and
requires each SPI controller to have a unique ID defined in the Device
Tree.

As we are about to merge armada-cp110-master.dtsi and
armada-cp110-slave.dtsi into a single file, those cell-index
properties that differ between the master CP110 and the slave CP110
are a difference that would have to be handled.

In order to avoid this, we switch to using the "aliases" DT node to
assign a unique number to each SPI controller. This is more generic,
and directly handled by the SPI core.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/marvell/armada-70x0.dtsi b/arch/arm64/boot/dts/marvell/armada-70x0.dtsi
index 0e1a1e5be399..815e64b3a874 100644
--- a/arch/arm64/boot/dts/marvell/armada-70x0.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-70x0.dtsi
@@ -50,6 +50,8 @@
 	aliases {
 		gpio1 = &cpm_gpio1;
 		gpio2 = &cpm_gpio2;
+		spi1 = &cpm_spi0;
+		spi2 = &cpm_spi1;
 	};
 };