ARM: keystone: dts: add a k2hk-evm specific dts file

This patch adds K2 Kepler/Hawking evm (k2hk-evm) specific dts file.
To enable re-use of bindings across multiple evms of this family,
rename current keystone.dts to keystone.dtsi and include it in the
evm specific dts file.

K2 SoC has separate ref clock inputs for various clocks. So add
separate ref clock nodes for ARM, DDR3A, DDR3B and PA PLL input
clocks in k2hk-evm.dts. While at it, rename  refclkmain to
refclksys based on device User Guide naming convention

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

diff --git a/arch/arm/boot/dts/k2hk-evm.dts b/arch/arm/boot/dts/k2hk-evm.dts
new file mode 100644 (file)
index 0000000..15b3a95
--- /dev/null
+++ b/arch/arm/boot/dts/k2hk-evm.dts
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2013 Texas Instruments, Inc.
+ *
+ * Keystone 2 Kepler/Hawking EVM device tree
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+/dts-v1/;
+
+#include "keystone.dtsi"
+
+/ {
+       compatible =  "ti,keystone-evm";
+
+       soc {
+               clock {
+                       refclksys: refclksys {
+                               #clock-cells = <0>;
+                               compatible = "fixed-clock";
+                               clock-frequency = <122880000>;
+                               clock-output-names = "refclk-sys";
+                       };
+
+                       refclkpass: refclkpass {
+                               #clock-cells = <0>;
+                               compatible = "fixed-clock";
+                               clock-frequency = <122880000>;
+                               clock-output-names = "refclk-pass";
+                       };
+
+                       refclkarm: refclkarm {
+                               #clock-cells = <0>;
+                               compatible = "fixed-clock";
+                               clock-frequency = <125000000>;
+                               clock-output-names = "refclk-arm";
+                       };
+
+                       refclkddr3a: refclkddr3a {
+                               #clock-cells = <0>;
+                               compatible = "fixed-clock";
+                               clock-frequency = <100000000>;
+                               clock-output-names = "refclk-ddr3a";
+                       };
+
+                       refclkddr3b: refclkddr3b {
+                               #clock-cells = <0>;
+                               compatible = "fixed-clock";
+                               clock-frequency = <100000000>;
+                               clock-output-names = "refclk-ddr3b";
+                       };
+               };
+       };
+};

diff --git a/arch/arm/boot/dts/keystone-clocks.dtsi b/arch/arm/boot/dts/keystone-clocks.dtsi
index d6713b113258f14523f813e04479c01a802b1d7f..67e70ec410d67f6c8d45e8d5627346d6be67eaa6 100644 (file)
--- a/arch/arm/boot/dts/keystone-clocks.dtsi
+++ b/arch/arm/boot/dts/keystone-clocks.dtsi
@@ -13,17 +13,10 @@ clocks {
        #size-cells = <1>;
        ranges;
 
-       refclkmain: refclkmain {
-               #clock-cells = <0>;
-               compatible = "fixed-clock";
-               clock-frequency = <122880000>;
-               clock-output-names = "refclk-main";
-       };
-
        mainpllclk: mainpllclk@2310110 {
                #clock-cells = <0>;
                compatible = "ti,keystone,main-pll-clock";
-               clocks = <&refclkmain>;
+               clocks = <&refclksys>;
                reg = <0x02620350 4>, <0x02310110 4>;
                reg-names = "control", "multiplier";
                fixed-postdiv = <2>;
@@ -32,47 +25,43 @@ clocks {
        papllclk: papllclk@2620358 {
                #clock-cells = <0>;
                compatible = "ti,keystone,pll-clock";
-               clocks = <&refclkmain>;
+               clocks = <&refclkpass>;
                clock-output-names = "pa-pll-clk";
                reg = <0x02620358 4>;
                reg-names = "control";
-               fixed-postdiv = <6>;
        };
 
        ddr3allclk: ddr3apllclk@2620360 {
                #clock-cells = <0>;
                compatible = "ti,keystone,pll-clock";
-               clocks = <&refclkmain>;
+               clocks = <&refclkddr3a>;
                clock-output-names = "ddr-3a-pll-clk";
                reg = <0x02620360 4>;
                reg-names = "control";
-               fixed-postdiv = <6>;
        };
 
        ddr3bllclk: ddr3bpllclk@2620368 {
                #clock-cells = <0>;
                compatible = "ti,keystone,pll-clock";
-               clocks = <&refclkmain>;
+               clocks = <&refclkddr3b>;
                clock-output-names = "ddr-3b-pll-clk";
                reg = <0x02620368 4>;
                reg-names = "control";
-               fixed-postdiv = <6>;
        };
 
        armpllclk: armpllclk@2620370 {
                #clock-cells = <0>;
                compatible = "ti,keystone,pll-clock";
-               clocks = <&refclkmain>;
+               clocks = <&refclkarm>;
                clock-output-names = "arm-pll-clk";
                reg = <0x02620370 4>;
                reg-names = "control";
-               fixed-postdiv = <6>;
        };
 
        mainmuxclk: mainmuxclk@2310108 {
                #clock-cells = <0>;
                compatible = "ti,keystone,pll-mux-clock";
-               clocks = <&mainpllclk>, <&refclkmain>;
+               clocks = <&mainpllclk>, <&refclksys>;
                reg = <0x02310108 4>;
                bit-shift = <23>;
                bit-mask = <1>;

diff --git a/arch/arm/boot/dts/keystone.dts b/arch/arm/boot/dts/keystone.dtsi
similarity index 98%
rename from arch/arm/boot/dts/keystone.dts
rename to arch/arm/boot/dts/keystone.dtsi
index 100bdf52b8478d61b558750924b845842ad32a83..c01c6fb6e370db34becdec210f1f23fc093de00a 100644 (file)
--- a/arch/arm/boot/dts/keystone.dts
+++ b/arch/arm/boot/dts/keystone.dtsi
@@ -6,14 +6,12 @@
  * published by the Free Software Foundation.
  */
 
-/dts-v1/;
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 
 #include "skeleton.dtsi"
 
 / {
        model = "Texas Instruments Keystone 2 SoC";
-       compatible =  "ti,keystone-evm";
        #address-cells = <2>;
        #size-cells = <2>;
        interrupt-parent = <&gic>;