Add ESPI slave node for P2020RDB.

Signed-off-by: Xiaowei Bao <xiaowei....@nxp.com>
---
 arch/powerpc/dts/p2020rdb-pc.dts     | 15 +++++++++++++++
 arch/powerpc/dts/p2020rdb-pc_36b.dts | 15 +++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/arch/powerpc/dts/p2020rdb-pc.dts b/arch/powerpc/dts/p2020rdb-pc.dts
index 08befd4..5ae278c 100644
--- a/arch/powerpc/dts/p2020rdb-pc.dts
+++ b/arch/powerpc/dts/p2020rdb-pc.dts
@@ -35,6 +35,21 @@
                ranges = <0x01000000 0x0 0x00000000 0x0 0xffc00000 0x0 
0x00010000   /* downstream I/O */
                          0x02000000 0x0 0x80000000 0x0 0x80000000 0x0 
0x20000000>; /* non-prefetchable memory */
        };
+
+       aliases {
+               spi0 = &espi0;
+       };
 };
 
 /include/ "p2020-post.dtsi"
+
+&espi0 {
+       status = "okay";
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               reg = <0>;
+               spi-max-frequency = <10000000>; /* input clock */
+       };
+};
diff --git a/arch/powerpc/dts/p2020rdb-pc_36b.dts 
b/arch/powerpc/dts/p2020rdb-pc_36b.dts
index 04b2519..542fffc 100644
--- a/arch/powerpc/dts/p2020rdb-pc_36b.dts
+++ b/arch/powerpc/dts/p2020rdb-pc_36b.dts
@@ -35,6 +35,21 @@
                ranges = <0x01000000 0x0 0x00000000 0xf 0xffc00000 0x0 
0x00010000   /* downstream I/O */
                          0x02000000 0x0 0x80000000 0xc 0x00000000 0x0 
0x20000000>; /* non-prefetchable memory */
        };
+
+       aliases {
+               spi0 = &espi0;
+       };
 };
 
 /include/ "p2020-post.dtsi"
+
+&espi0 {
+       status = "okay";
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               reg = <0>;
+               spi-max-frequency = <10000000>; /* input clock */
+       };
+};
-- 
2.9.5

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