[U-Boot] [PATCH v4] arm: dts: Stratix10: Add QSPI node

[Ley Foon Tan <ley.foon.tan@intel.com>]

Add QSPI device tree to Stratix 10.
Sync from Linux Stratix 10 dts.

Tested on Stratix 10 SoC devkit.
SOCFPGA_STRATIX10 # sf probe 0:0
SF: Detected mt25qu02g with page size 256 Bytes, erase size 64 KiB, total 256 MiB

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

---
v3->v4:
- Add qspi node to dtsi based on alphabetical order
- Add spi-tx-bus-width and spi-rx-bus-width

v2->v3:
- Change flash compatible to "jedec,spi-nor"
- Change spi-max-frequency to 100MHz
---
 arch/arm/dts/socfpga_stratix10.dtsi      | 15 +++++++++++++++
 arch/arm/dts/socfpga_stratix10_socdk.dts | 23 +++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/arch/arm/dts/socfpga_stratix10.dtsi b/arch/arm/dts/socfpga_stratix10.dtsi
index ee93725d648..fde76774047 100644
--- a/arch/arm/dts/socfpga_stratix10.dtsi
+++ b/arch/arm/dts/socfpga_stratix10.dtsi
@@ -237,6 +237,21 @@
 			reg = <0xffe00000 0x100000>;
 		};
 
+		qspi: spi at ff8d2000 {
+			compatible = "cdns,qspi-nor";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0xff8d2000 0x100>,
+			      <0xff900000 0x100000>;
+			interrupts = <0 3 4>;
+			cdns,fifo-depth = <128>;
+			cdns,fifo-width = <4>;
+			cdns,trigger-address = <0x00000000>;
+			bus-num = <0>;
+			status = "disabled";
+			u-boot,dm-pre-reloc;
+		};
+
 		rst: rstmgr at ffd11000 {
 			#reset-cells = <1>;
 			compatible = "altr,rst-mgr";
diff --git a/arch/arm/dts/socfpga_stratix10_socdk.dts b/arch/arm/dts/socfpga_stratix10_socdk.dts
index c59b77d8298..438b43fef6b 100644
--- a/arch/arm/dts/socfpga_stratix10_socdk.dts
+++ b/arch/arm/dts/socfpga_stratix10_socdk.dts
@@ -10,6 +10,7 @@
 
 	aliases {
 		serial0 = &uart0;
+		spi0 = &qspi;
 	};
 
 	chosen {
@@ -87,6 +88,28 @@
 	smplsel = <0>;
 };
 
+&qspi {
+	status = "okay";
+
+	flash at 0 {
+		u-boot,dm-pre-reloc;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;      /* chip select */
+		spi-max-frequency = <100000000>;
+
+		page-size = <256>;
+		block-size = <16>; /* 2^16, 64KB */
+		cdns,tshsl-ns = <50>;
+		cdns,tsd2d-ns = <50>;
+		cdns,tchsh-ns = <4>;
+		cdns,tslch-ns = <4>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+};
+
 &uart0 {
 	status = "okay";
 };
-- 
2.19.0