ARM: dts: socfpga: update NAND clocking for c5/a5

The NAND IP needs 3 clocks(nand_x_clk, nand_clk, and nand_ecc_clk). The
nand_x_clk and nand_ecc_clk are derived from the nand_clk. The nand_x_clk
has a fixed divider of 4.

Also, update the NAND dts property with the correct clocks property.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
---
v2: add nand_ecc_clk and update commit message

diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi
index b38f8c2..daf249e 100644 (file)
--- a/arch/arm/boot/dts/socfpga.dtsi
+++ b/arch/arm/boot/dts/socfpga.dtsi
@@ -483,10 +483,17 @@
                                                clk-gate = <0xa0 9>;
                                        };
 
+                                       nand_ecc_clk: nand_ecc_clk {
+                                               #clock-cells = <0>;
+                                               compatible = "altr,socfpga-gate-clk";
+                                               clocks = <&nand_x_clk>;
+                                               clk-gate = <0xa0 9>;
+                                       };
+
                                        nand_clk: nand_clk {
                                                #clock-cells = <0>;
                                                compatible = "altr,socfpga-gate-clk";
-                                               clocks = <&f2s_periph_ref_clk>, <&main_nand_sdmmc_clk>, <&per_nand_mmc_clk>;
+                                               clocks = <&nand_x_clk>;
                                                clk-gate = <0xa0 10>;
                                                fixed-divider = <4>;
                                        };
@@ -754,7 +761,8 @@
                        reg-names = "nand_data", "denali_reg";
                        interrupts = <0x0 0x90 0x4>;
                        dma-mask = <0xffffffff>;
-                       clocks = <&nand_x_clk>;
+                       clocks = <&nand_clk>, <&nand_x_clk>, <&nand_ecc_clk>;
+                       clock-names = "nand", "nand_x", "ecc";
                        status = "disabled";
                };