Merge branch 'zynq/core-smp' of git://git.xilinx.com/linux-xlnx into …

…next/soc2 From Michal Simek <michal.simek@xilinx.com>: This branch is based on zynq/clksrc/cleanup parts because there are some dependencies on moving timer to generic location. I could based it on standard Linux tagged version but you will get several conflicts you will have to resolve. If you are OK to resolving these problems, please let me know I will create another branch with core-smp changes which are not based on zynq/clksrc/cleanup branch. * 'zynq/core-smp' of git://git.xilinx.com/linux-xlnx: arm: zynq: Add hotplug support arm: zynq: Add smp support arm: zynq: Add smp_twd timer arm: zynq: Get rid of xilinx function prefix arm: zynq: Add support for system reset arm: zynq: Move slcr initialization to separate file arm: zynq: Load scu baseaddress at run time Signed-off-by: Arnd Bergmann <arnd@arndb.de>
git-mirror · Apr 8, 2013 · c985d7e · c985d7e
2 parents e382328 + c7c28b0
commit c985d7e
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diff --git a/Documentation/devicetree/bindings/timer/cadence,ttc-timer.txt b/Documentation/devicetree/bindings/timer/cadence,ttc-timer.txt
@@ -0,0 +1,17 @@
+Cadence TTC - Triple Timer Counter
+
+Required properties:
+- compatible : Should be "cdns,ttc".
+- reg : Specifies base physical address and size of the registers.
+- interrupts : A list of 3 interrupts; one per timer channel.
+- clocks: phandle to the source clock
+
+Example:
+
+ttc0: ttc0@f8001000 {
+	interrupt-parent = <&intc>;
+	interrupts = < 0 10 4 0 11 4 0 12 4 >;
+	compatible = "cdns,ttc";
+	reg = <0xF8001000 0x1000>;
+	clocks = <&cpu_clk 3>;
+};
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
@@ -1593,6 +1593,7 @@ config HAVE_ARM_ARCH_TIMER
 config HAVE_ARM_TWD
 	bool
 	depends on SMP
+	select CLKSRC_OF if OF
 	help
 	  This options enables support for the ARM timer and watchdog unit
 

diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -111,56 +111,30 @@
 		};
 
 		ttc0: ttc0@f8001000 {
-			#address-cells = <1>;
-			#size-cells = <0>;
-			compatible = "xlnx,ttc";
+			interrupt-parent = <&intc>;
+			interrupts = < 0 10 4 0 11 4 0 12 4 >;
+			compatible = "cdns,ttc";
 			reg = <0xF8001000 0x1000>;
 			clocks = <&cpu_clk 3>;
 			clock-names = "cpu_1x";
 			clock-ranges;
-
-			ttc0_0: ttc0.0 {
-				status = "disabled";
-				reg = <0>;
-				interrupts = <0 10 4>;
-			};
-			ttc0_1: ttc0.1 {
-				status = "disabled";
-				reg = <1>;
-				interrupts = <0 11 4>;
-			};
-			ttc0_2: ttc0.2 {
-				status = "disabled";
-				reg = <2>;
-				interrupts = <0 12 4>;
-			};
 		};
 
 		ttc1: ttc1@f8002000 {
-			#interrupt-parent = <&intc>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			compatible = "xlnx,ttc";
+			interrupt-parent = <&intc>;
+			interrupts = < 0 37 4 0 38 4 0 39 4 >;
+			compatible = "cdns,ttc";
 			reg = <0xF8002000 0x1000>;
 			clocks = <&cpu_clk 3>;
 			clock-names = "cpu_1x";
 			clock-ranges;
-
-			ttc1_0: ttc1.0 {
-				status = "disabled";
-				reg = <0>;
-				interrupts = <0 37 4>;
-			};
-			ttc1_1: ttc1.1 {
-				status = "disabled";
-				reg = <1>;
-				interrupts = <0 38 4>;
-			};
-			ttc1_2: ttc1.2 {
-				status = "disabled";
-				reg = <2>;
-				interrupts = <0 39 4>;
-			};
 		};
+		scutimer: scutimer@f8f00600 {
+			interrupt-parent = <&intc>;
+			interrupts = < 1 13 0x301 >;
+			compatible = "arm,cortex-a9-twd-timer";
+			reg = < 0xf8f00600 0x20 >;
+			clocks = <&cpu_clk 1>;
+		} ;
 	};
 };
diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts
@@ -32,13 +32,3 @@
 &ps_clk {
 	clock-frequency = <33333330>;
 };
-
-&ttc0_0 {
-	status = "ok";
-	compatible = "xlnx,ttc-counter-clocksource";
-};
-
-&ttc0_1 {
-	status = "ok";
-	compatible = "xlnx,ttc-counter-clockevent";
-};
diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h
@@ -34,12 +34,4 @@ struct twd_local_timer name __initdata = {	\
 
 int twd_local_timer_register(struct twd_local_timer *);
 
-#ifdef CONFIG_HAVE_ARM_TWD
-void twd_local_timer_of_register(void);
-#else
-static inline void twd_local_timer_of_register(void)
-{
-}
-#endif
-
 #endif
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
@@ -362,25 +362,13 @@ int __init twd_local_timer_register(struct twd_local_timer *tlt)
 }
 
 #ifdef CONFIG_OF
-const static struct of_device_id twd_of_match[] __initconst = {
-	{ .compatible = "arm,cortex-a9-twd-timer",	},
-	{ .compatible = "arm,cortex-a5-twd-timer",	},
-	{ .compatible = "arm,arm11mp-twd-timer",	},
-	{ },
-};
-
-void __init twd_local_timer_of_register(void)
+static void __init twd_local_timer_of_register(struct device_node *np)
 {
-	struct device_node *np;
 	int err;
 
 	if (!is_smp() || !setup_max_cpus)
 		return;
 
-	np = of_find_matching_node(NULL, twd_of_match);
-	if (!np)
-		return;
-
 	twd_ppi = irq_of_parse_and_map(np, 0);
 	if (!twd_ppi) {
 		err = -EINVAL;
@@ -398,4 +386,7 @@ void __init twd_local_timer_of_register(void)
 out:
 	WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
 }
+CLOCKSOURCE_OF_DECLARE(arm_twd_a9, "arm,cortex-a9-twd-timer", twd_local_timer_of_register);
+CLOCKSOURCE_OF_DECLARE(arm_twd_a5, "arm,cortex-a5-twd-timer", twd_local_timer_of_register);
+CLOCKSOURCE_OF_DECLARE(arm_twd_11mp, "arm,arm11mp-twd-timer", twd_local_timer_of_register);
 #endif
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
@@ -32,7 +32,6 @@
 #include <asm/cacheflush.h>
 #include <asm/cputype.h>
 #include <asm/smp_plat.h>
-#include <asm/smp_twd.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/timer-sp.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -119,10 +118,10 @@ static void __init highbank_timer_init(void)
 	sp804_clocksource_and_sched_clock_init(timer_base + 0x20, "timer1");
 	sp804_clockevents_init(timer_base, irq, "timer0");
 
-	twd_local_timer_of_register();
-
 	arch_timer_of_register();
 	arch_timer_sched_clock_init();
+
+	clocksource_of_init();
 }
 
 static void highbank_power_off(void)

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
@@ -12,6 +12,7 @@
 
 #include <linux/clk.h>
 #include <linux/clkdev.h>
+#include <linux/clocksource.h>
 #include <linux/cpu.h>
 #include <linux/delay.h>
 #include <linux/export.h>
@@ -28,11 +29,9 @@
 #include <linux/regmap.h>
 #include <linux/micrel_phy.h>
 #include <linux/mfd/syscon.h>
-#include <asm/smp_twd.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
-#include <asm/mach/time.h>
 #include <asm/system_misc.h>
 
 #include "common.h"
@@ -292,7 +291,7 @@ static void __init imx6q_init_irq(void)
 static void __init imx6q_timer_init(void)
 {
 	mx6q_clocks_init();
-	twd_local_timer_of_register();
+	clocksource_of_init();
 	imx_print_silicon_rev("i.MX6Q", imx6q_revision());
 }
 

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
@@ -597,7 +597,7 @@ void __init omap4_local_timer_init(void)
 		int err;
 
 		if (of_have_populated_dt()) {
-			twd_local_timer_of_register();
+			clocksource_of_init();
 			return;
 		}
 

diff --git a/arch/arm/mach-spear13xx/spear13xx.c b/arch/arm/mach-spear13xx/spear13xx.c
@@ -15,12 +15,12 @@
 
 #include <linux/amba/pl022.h>
 #include <linux/clk.h>
+#include <linux/clocksource.h>
 #include <linux/dw_dmac.h>
 #include <linux/err.h>
 #include <linux/of.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/map.h>
-#include <asm/smp_twd.h>
 #include <mach/dma.h>
 #include <mach/generic.h>
 #include <mach/spear.h>
@@ -179,5 +179,5 @@ void __init spear13xx_timer_init(void)
 	clk_put(pclk);
 
 	spear_setup_of_timer();
-	twd_local_timer_of_register();
+	clocksource_of_init();
 }
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
@@ -7,6 +7,7 @@
 #include <linux/io.h>
 #include <linux/errno.h>
 #include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/clocksource.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/platform_data/clocksource-nomadik-mtu.h>
@@ -32,7 +33,7 @@ static void __init ux500_twd_init(void)
 	twd_local_timer = &u8500_twd_local_timer;
 
 	if (of_have_populated_dt())
-		twd_local_timer_of_register();
+		clocksource_of_init();
 	else {
 		err = twd_local_timer_register(twd_local_timer);
 		if (err)

diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
@@ -5,6 +5,7 @@
 #include <linux/amba/bus.h>
 #include <linux/amba/mmci.h>
 #include <linux/io.h>
+#include <linux/clocksource.h>
 #include <linux/smp.h>
 #include <linux/init.h>
 #include <linux/irqchip.h>
@@ -25,7 +26,6 @@
 #include <asm/arch_timer.h>
 #include <asm/mach-types.h>
 #include <asm/sizes.h>
-#include <asm/smp_twd.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
@@ -435,6 +435,7 @@ static void __init v2m_dt_timer_init(void)
 
 	vexpress_clk_of_init();
 
+	clocksource_of_init();
 	do {
 		node = of_find_compatible_node(node, NULL, "arm,sp804");
 	} while (node && vexpress_get_site_by_node(node) != VEXPRESS_SITE_MB);
@@ -445,8 +446,7 @@ static void __init v2m_dt_timer_init(void)
 				irq_of_parse_and_map(node, 0));
 	}
 
-	if (arch_timer_of_register() != 0)
-		twd_local_timer_of_register();
+	arch_timer_of_register();
 
 	if (arch_timer_sched_clock_init() != 0)
 		versatile_sched_clock_init(vexpress_get_24mhz_clock_base(),

diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
@@ -8,6 +8,8 @@ config ARCH_ZYNQ
 	select ICST
 	select MIGHT_HAVE_CACHE_L2X0
 	select USE_OF
+	select HAVE_SMP
 	select SPARSE_IRQ
+	select CADENCE_TTC_TIMER
 	help
 	  Support for Xilinx Zynq ARM Cortex A9 Platform
diff --git a/arch/arm/mach-zynq/Makefile b/arch/arm/mach-zynq/Makefile
@@ -3,4 +3,8 @@
 #
 
 # Common support
-obj-y				:= common.o timer.o
+obj-y				:= common.o slcr.o
+CFLAGS_REMOVE_hotplug.o		=-march=armv6k
+CFLAGS_hotplug.o 		=-Wa,-march=armv7-a -mcpu=cortex-a9
+obj-$(CONFIG_HOTPLUG_CPU)	+= hotplug.o
+obj-$(CONFIG_SMP)		+= headsmp.o platsmp.o