[PATCH v2 2/2] ARM: dts: orange-pi-zero: add node for SPI NOR

SPI NOR flash was optional in the first production batch in Dec 2016.
In later batches flash chip was pre-populated. However there should
be quite a few boards around which do not have flash chip.

Add node for SPI NOR flash on orange-pi-zero board. Disable this node
by default and leave it to users to enable it if their board has
SPI NOR flash chip populated.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
---
 arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
index e97dfd1775d1..bbbd8c656914 100644
--- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
+++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts

@@ -138,6 +138,19 @@
        bias-pull-up;
 };

+&spi0 {
+       /* Disable SPI NOR by default: it optional on Orange Pi Zero boards */
+       status = "disabled";
+
+       flash at 0 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "mxicy,mx25l1606e", "winbond,w25q128";
+               reg = <0>;
+               spi-max-frequency = <40000000>;
+       };
+};
+
 &ohci0 {