From 0f586fbf6f6a9119392a5cb0f193ac11c753b09e Mon Sep 17 00:00:00 2001
From: Josh Cartwright <josh.cartwright@ni.com>
Date: Thu, 8 Nov 2012 12:04:26 -0600
Subject: [PATCH 1/1] ARM: zynq: use zynq clk bindings

Make the Zynq platform use the newly created zynq clk bindings.

Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
---
 arch/arm/Kconfig                 |  1 +
 arch/arm/boot/dts/zynq-7000.dtsi | 56 ++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/zynq-zc702.dts |  4 +++
 arch/arm/mach-zynq/common.c      | 11 +++++++
 drivers/clk/Makefile             |  1 +
 5 files changed, 73 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 21ed87bc3503..ccfe0ab8c877 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -959,6 +959,7 @@ config ARCH_ZYNQ
 	bool "Xilinx Zynq ARM Cortex A9 Platform"
 	select ARM_AMBA
 	select ARM_GIC
+	select COMMON_CLK
 	select CPU_V7
 	select GENERIC_CLOCKEVENTS
 	select ICST
diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index 8b30e596deab..bb3085ca4f06 100644
--- a/arch/arm/boot/dts/zynq-7000.dtsi
+++ b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -53,5 +53,61 @@
 			interrupts = <0 50 4>;
 			clock = <50000000>;
 		};
+
+		slcr: slcr@f8000000 {
+			compatible = "xlnx,zynq-slcr";
+			reg = <0xF8000000 0x1000>;
+
+			clocks {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				ps_clk: ps_clk {
+					#clock-cells = <0>;
+					compatible = "fixed-clock";
+					/* clock-frequency set in board-specific file */
+					clock-output-names = "ps_clk";
+				};
+				armpll: armpll {
+					#clock-cells = <0>;
+					compatible = "xlnx,zynq-pll";
+					clocks = <&ps_clk>;
+					reg = <0x100 0x110>;
+					clock-output-names = "armpll";
+				};
+				ddrpll: ddrpll {
+					#clock-cells = <0>;
+					compatible = "xlnx,zynq-pll";
+					clocks = <&ps_clk>;
+					reg = <0x104 0x114>;
+					clock-output-names = "ddrpll";
+				};
+				iopll: iopll {
+					#clock-cells = <0>;
+					compatible = "xlnx,zynq-pll";
+					clocks = <&ps_clk>;
+					reg = <0x108 0x118>;
+					clock-output-names = "iopll";
+				};
+				uart_clk: uart_clk {
+					#clock-cells = <1>;
+					compatible = "xlnx,zynq-periph-clock";
+					clocks = <&iopll &armpll &ddrpll>;
+					reg = <0x154>;
+					clock-output-names = "uart0_ref_clk",
+							     "uart1_ref_clk";
+				};
+				cpu_clk: cpu_clk {
+					#clock-cells = <1>;
+					compatible = "xlnx,zynq-cpu-clock";
+					clocks = <&iopll &armpll &ddrpll>;
+					reg = <0x120 0x1C4>;
+					clock-output-names = "cpu_6x4x",
+							     "cpu_3x2x",
+							     "cpu_2x",
+							     "cpu_1x";
+				};
+			};
+		};
 	};
 };
diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts
index e25a307438ad..86f44d5b0265 100644
--- a/arch/arm/boot/dts/zynq-zc702.dts
+++ b/arch/arm/boot/dts/zynq-zc702.dts
@@ -28,3 +28,7 @@
 	};
 
 };
+
+&ps_clk {
+	clock-frequency = <33333330>;
+};
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index 5441323e2a68..79bf5fb4dad3 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -19,6 +19,8 @@
 #include <linux/cpumask.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/clk/zynq.h>
+#include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/of.h>
@@ -96,6 +98,15 @@ static struct map_desc io_desc[] __initdata = {
 
 static void __init xilinx_zynq_timer_init(void)
 {
+	struct device_node *np;
+	void __iomem *slcr;
+
+	np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr");
+	slcr = of_iomap(np, 0);
+	WARN_ON(!slcr);
+
+	xilinx_zynq_clocks_init(slcr);
+
 	xttcpss_timer_init();
 }
 
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 71a25b91de00..d35a34c58369 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -19,6 +19,7 @@ endif
 obj-$(CONFIG_MACH_LOONGSON1)	+= clk-ls1x.o
 obj-$(CONFIG_ARCH_U8500)	+= ux500/
 obj-$(CONFIG_ARCH_VT8500)	+= clk-vt8500.o
+obj-$(CONFIG_ARCH_ZYNQ)		+= clk-zynq.o
 
 # Chip specific
 obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
-- 
2.39.2