One more thing:

On Tue, Sep 08, 2015 at 05:49:54PM +0800, Bayi Cheng wrote:

+- clocks: spi nor source clock

^^ you only list one clock here

+- clock-names: "spi_clk", "axi_clk", "mux_clk", "sf_clk"

But you have 4 names here.

...

+	clocks = <&pericfg CLK_PERI_SPI>,
+		 <&topckgen CLK_TOP_AXI_SEL>,
+		 <&topckgen CLK_TOP_UNIVPLL2_D8>,
+		 <&topckgen CLK_TOP_SPINFI_IFR_SEL>;

And you provide 4 clocks.

+	clock-names = "spi_clk", "axi_clk", "mux_clk", "sf_clk";

Please list all 4 under the "clocks" property, not just under the
"clock-names" property.

Brian