arm64: dts: stratix10: Add QSPI support for Stratix10

Add qspi_clock
   The qspi_clk frequency is updated by U-Boot before starting Linux.
Add QSPI interface node.
Add QSPI flash memory child node.
   Setup the QSPI memory in 2 partitions.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
index 67dac59..47fa4b4 100644 (file)
--- a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
+++ b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
@@ -119,6 +119,12 @@
                                #clock-cells = <0>;
                                compatible = "fixed-clock";
                        };
+
+                       qspi_clk: qspi-clk {
+                               #clock-cells = <0>;
+                               compatible = "fixed-clock";
+                               clock-frequency = <200000000>;
+                       };
                };
 
                gmac0: ethernet@ff800000 {
@@ -464,5 +470,20 @@
                                interrupts = <16 4>, <48 4>;
                        };
                };
+
+               qspi: spi@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>;
+                       clocks = <&qspi_clk>;
+
+                       status = "disabled";
+               };
        };
 };

diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
index f9b1ef1..6edc4fa 100644 (file)
--- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
+++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
@@ -147,3 +147,38 @@
                reg = <0x68>;
        };
 };
+
+&qspi {
+       flash@0 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "n25q00a";
+               reg = <0>;
+               spi-max-frequency = <50000000>;
+
+               m25p,fast-read;
+               cdns,page-size = <256>;
+               cdns,block-size = <16>;
+               cdns,read-delay = <1>;
+               cdns,tshsl-ns = <50>;
+               cdns,tsd2d-ns = <50>;
+               cdns,tchsh-ns = <4>;
+               cdns,tslch-ns = <4>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       qspi_boot: partition@0 {
+                               label = "Boot and fpga data";
+                               reg = <0x0 0x4000000>;
+                       };
+
+                       qspi_rootfs: partition@4000000 {
+                               label = "Root Filesystem - JFFS2";
+                               reg = <0x4000000 0x4000000>;
+                       };
+               };
+       };
+};