---

yaml
---
r: 336476
b: refs/heads/master
c: bcd6f56
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ed27ff1db869cc81a92bed6defb7d107f5a156ff
+refs/heads/master: bcd6f569e87471d7f104bd9497f0b516a3b12e32

trunk/arch/arm/include/asm/hardware/sp810.h

@@ -56,6 +56,8 @@
 #define SCCTRL_TIMEREN1SEL_REFCLK	(0 << 17)
 #define SCCTRL_TIMEREN1SEL_TIMCLK	(1 << 17)
 
+#define SCCTRL_TIMERENnSEL_SHIFT(n)	(15 + ((n) * 2))
+
 static inline void sysctl_soft_reset(void __iomem *base)
 {
 	/* switch to slow mode */

trunk/drivers/clk/Kconfig

@@ -42,10 +42,12 @@ config COMMON_CLK_WM831X
 
 config COMMON_CLK_VERSATILE
 	bool "Clock driver for ARM Reference designs"
-	depends on ARCH_INTEGRATOR || ARCH_REALVIEW
+	depends on ARCH_INTEGRATOR || ARCH_REALVIEW || ARCH_VEXPRESS
 	---help---
-          Supports clocking on ARM Reference designs Integrator/AP,
-	  Integrator/CP, RealView PB1176, EB, PB11MP and PBX.
+          Supports clocking on ARM Reference designs:
+	  - Integrator/AP and Integrator/CP
+	  - RealView PB1176, EB, PB11MP and PBX
+	  - Versatile Express
 
 config COMMON_CLK_MAX77686
 	tristate "Clock driver for Maxim 77686 MFD"

trunk/drivers/clk/versatile/Makefile

@@ -2,4 +2,5 @@
 obj-$(CONFIG_ICST)		+= clk-icst.o
 obj-$(CONFIG_ARCH_INTEGRATOR)	+= clk-integrator.o
 obj-$(CONFIG_ARCH_REALVIEW)	+= clk-realview.o
+obj-$(CONFIG_ARCH_VEXPRESS)	+= clk-vexpress.o
 obj-$(CONFIG_VEXPRESS_CONFIG)	+= clk-vexpress-osc.o

trunk/drivers/clk/versatile/clk-vexpress.c

@@ -0,0 +1,142 @@
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * Copyright (C) 2012 ARM Limited
+ */
+
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/vexpress.h>
+
+#include <asm/hardware/sp810.h>
+
+static struct clk *vexpress_sp810_timerclken[4];
+static DEFINE_SPINLOCK(vexpress_sp810_lock);
+
+static void __init vexpress_sp810_init(void __iomem *base)
+{
+	int i;
+
+	if (WARN_ON(!base))
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(vexpress_sp810_timerclken); i++) {
+		char name[12];
+		const char *parents[] = {
+			"v2m:refclk32khz", /* REFCLK */
+			"v2m:refclk1mhz" /* TIMCLK */
+		};
+
+		snprintf(name, ARRAY_SIZE(name), "timerclken%d", i);
+
+		vexpress_sp810_timerclken[i] = clk_register_mux(NULL, name,
+				parents, 2, 0, base + SCCTRL,
+				SCCTRL_TIMERENnSEL_SHIFT(i), 1,
+				0, &vexpress_sp810_lock);
+
+		if (WARN_ON(IS_ERR(vexpress_sp810_timerclken[i])))
+			break;
+	}
+}
+
+
+static const char * const vexpress_clk_24mhz_periphs[] __initconst = {
+	"mb:uart0", "mb:uart1", "mb:uart2", "mb:uart3",
+	"mb:mmci", "mb:kmi0", "mb:kmi1"
+};
+
+void __init vexpress_clk_init(void __iomem *sp810_base)
+{
+	struct clk *clk;
+	int i;
+
+	clk = clk_register_fixed_rate(NULL, "dummy_apb_pclk", NULL,
+			CLK_IS_ROOT, 0);
+	WARN_ON(clk_register_clkdev(clk, "apb_pclk", NULL));
+
+	clk = clk_register_fixed_rate(NULL, "v2m:clk_24mhz", NULL,
+			CLK_IS_ROOT, 24000000);
+	for (i = 0; i < ARRAY_SIZE(vexpress_clk_24mhz_periphs); i++)
+		WARN_ON(clk_register_clkdev(clk, NULL,
+				vexpress_clk_24mhz_periphs[i]));
+
+	clk = clk_register_fixed_rate(NULL, "v2m:refclk32khz", NULL,
+			CLK_IS_ROOT, 32768);
+	WARN_ON(clk_register_clkdev(clk, NULL, "v2m:wdt"));
+
+	clk = clk_register_fixed_rate(NULL, "v2m:refclk1mhz", NULL,
+			CLK_IS_ROOT, 1000000);
+
+	vexpress_sp810_init(sp810_base);
+
+	for (i = 0; i < ARRAY_SIZE(vexpress_sp810_timerclken); i++)
+		WARN_ON(clk_set_parent(vexpress_sp810_timerclken[i], clk));
+
+	WARN_ON(clk_register_clkdev(vexpress_sp810_timerclken[0],
+				"v2m-timer0", "sp804"));
+	WARN_ON(clk_register_clkdev(vexpress_sp810_timerclken[1],
+				"v2m-timer1", "sp804"));
+}
+
+#if defined(CONFIG_OF)
+
+struct clk *vexpress_sp810_of_get(struct of_phandle_args *clkspec, void *data)
+{
+	if (WARN_ON(clkspec->args_count != 1 || clkspec->args[0] >
+			ARRAY_SIZE(vexpress_sp810_timerclken)))
+		return NULL;
+
+	return vexpress_sp810_timerclken[clkspec->args[0]];
+}
+
+static const __initconst struct of_device_id vexpress_fixed_clk_match[] = {
+	{ .compatible = "fixed-clock", .data = of_fixed_clk_setup, },
+	{ .compatible = "arm,vexpress-osc", .data = vexpress_osc_of_setup, },
+	{}
+};
+
+void __init vexpress_clk_of_init(void)
+{
+	struct device_node *node;
+	struct clk *clk;
+	struct clk *refclk, *timclk;
+
+	of_clk_init(vexpress_fixed_clk_match);
+
+	node = of_find_compatible_node(NULL, NULL, "arm,sp810");
+	vexpress_sp810_init(of_iomap(node, 0));
+	of_clk_add_provider(node, vexpress_sp810_of_get, NULL);
+
+	/* Select "better" (faster) parent for SP804 timers */
+	refclk = of_clk_get_by_name(node, "refclk");
+	timclk = of_clk_get_by_name(node, "timclk");
+	if (!WARN_ON(IS_ERR(refclk) || IS_ERR(timclk))) {
+		int i = 0;
+
+		if (clk_get_rate(refclk) > clk_get_rate(timclk))
+			clk = refclk;
+		else
+			clk = timclk;
+
+		for (i = 0; i < ARRAY_SIZE(vexpress_sp810_timerclken); i++)
+			WARN_ON(clk_set_parent(vexpress_sp810_timerclken[i],
+					clk));
+	}
+
+	WARN_ON(clk_register_clkdev(vexpress_sp810_timerclken[0],
+				"v2m-timer0", "sp804"));
+	WARN_ON(clk_register_clkdev(vexpress_sp810_timerclken[1],
+				"v2m-timer1", "sp804"));
+}
+
+#endif