MLK-11061: ARM:dts: enable ddr quad mode for QSPI on 6UL ARM2 and 7D ARM2

Enable DDR Quad mode for QSPI on 6UL ARM2 and 7D ARM2 board to improve
the performance.

Signed-off-by: Han Xu <b45815@freescale.com>
(cherry picked and merge from commit ba6c2f00b5b000996bf8acbbd62c30d8f8f61182)

diff --git a/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-qspi.dts b/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-qspi.dts
index 4f2eb33..ede6df2 100644 (file)
--- a/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-qspi.dts
+++ b/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-qspi.dts
@@ -50,6 +50,7 @@
                #size-cells = <1>;
                compatible = "micron,n25q256a";
                spi-max-frequency = <29000000>;
+               spi-nor,ddr-quad-read-dummy = <6>;
                reg = <0>;
        };
 
@@ -58,6 +59,7 @@
                #size-cells = <1>;
                compatible = "micron,n25q256a";
                spi-max-frequency = <29000000>;
+               spi-nor,ddr-quad-read-dummy = <6>;
                reg = <1>;
        };
 
@@ -66,6 +68,7 @@
                #size-cells = <1>;
                compatible = "micron,n25q256a";
                spi-max-frequency = <29000000>;
+               spi-nor,ddr-quad-read-dummy = <6>;
                reg = <2>;
        };
 
@@ -74,6 +77,7 @@
                #size-cells = <1>;
                compatible = "micron,n25q256a";
                spi-max-frequency = <29000000>;
+               spi-nor,ddr-quad-read-dummy = <6>;
                reg = <3>;
        };
 };