Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC-specific updates from Arnd Bergmann:
 "This is a larger set of new functionality for the existing SoC
  families, including:

   - vt8500 gains support for new CPU cores, notably the Cortex-A9 based
     wm8850

   - prima2 gains support for the "marco" SoC family, its SMP based
     cousin

   - tegra gains support for the new Tegra4 (Tegra114) family

   - socfpga now supports a newer version of the hardware including SMP

   - i.mx31 and bcm2835 are now using DT probing for their clocks

   - lots of updates for sh-mobile

   - OMAP updates for clocks, power management and USB

   - i.mx6q and tegra now support cpuidle

   - kirkwood now supports PCIe hot plugging

   - tegra clock support is updated

   - tegra USB PHY probing gets implemented diffently"

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (148 commits)
  ARM: prima2: remove duplicate v7_invalidate_l1
  ARM: shmobile: r8a7779: Correct TMU clock support again
  ARM: prima2: fix __init section for cpu hotplug
  ARM: OMAP: Consolidate OMAP USB-HS platform data (part 3/3)
  ARM: OMAP: Consolidate OMAP USB-HS platform data (part 1/3)
  arm: socfpga: Add SMP support for actual socfpga harware
  arm: Add v7_invalidate_l1 to cache-v7.S
  arm: socfpga: Add entries to enable make dtbs socfpga
  arm: socfpga: Add new device tree source for actual socfpga HW
  ARM: tegra: sort Kconfig selects for Tegra114
  ARM: tegra: enable ARCH_REQUIRE_GPIOLIB for Tegra114
  ARM: tegra: Fix build error w/ ARCH_TEGRA_114_SOC w/o ARCH_TEGRA_3x_SOC
  ARM: tegra: Fix build error for gic update
  ARM: tegra: remove empty tegra_smp_init_cpus()
  ARM: shmobile: Register ARM architected timer
  ARM: MARCO: fix the build issue due to gic-vic-to-irqchip move
  ARM: shmobile: r8a7779: Correct TMU clock support
  ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT
  ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles
  ARM: mxs: use apbx bus clock to drive the timers on timrotv2
  ...

arch/arm/mach-imx/Makefile

@@ -28,7 +28,11 @@ obj-$(CONFIG_MXC_ULPI) += ulpi.o
 obj-$(CONFIG_MXC_USE_EPIT) += epit.o
 obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o
 obj-$(CONFIG_CPU_FREQ_IMX)    += cpufreq.o
-obj-$(CONFIG_CPU_IDLE) += cpuidle.o
+
+ifeq ($(CONFIG_CPU_IDLE),y)
+obj-y += cpuidle.o
+obj-$(CONFIG_SOC_IMX6Q) += cpuidle-imx6q.o
+endif
 
 ifdef CONFIG_SND_IMX_SOC
 obj-y += ssi-fiq.o

arch/arm/mach-imx/clk-imx27.c

@@ -62,7 +62,7 @@ static const char *clko_sel_clks[] = {
 	"32k", "usb_div", "dptc",
 };
 
-static const char *ssi_sel_clks[] = { "spll", "mpll", };
+static const char *ssi_sel_clks[] = { "spll_gate", "mpll", };
 
 enum mx27_clks {
 	dummy, ckih, ckil, mpll, spll, mpll_main2, ahb, ipg, nfc_div, per1_div,
@@ -82,7 +82,7 @@ enum mx27_clks {
 	csi_ahb_gate, brom_ahb_gate, ata_ahb_gate, wdog_ipg_gate, usb_ipg_gate,
 	uart6_ipg_gate, uart5_ipg_gate, uart4_ipg_gate, uart3_ipg_gate,
 	uart2_ipg_gate, uart1_ipg_gate, ckih_div1p5, fpm, mpll_osc_sel,
-	mpll_sel, clk_max
+	mpll_sel, spll_gate, clk_max
 };
 
 static struct clk *clk[clk_max];
@@ -104,6 +104,7 @@ int __init mx27_clocks_init(unsigned long fref)
 			ARRAY_SIZE(mpll_sel_clks));
 	clk[mpll] = imx_clk_pllv1("mpll", "mpll_sel", CCM_MPCTL0);
 	clk[spll] = imx_clk_pllv1("spll", "ckih", CCM_SPCTL0);
+	clk[spll_gate] = imx_clk_gate("spll_gate", "spll", CCM_CSCR, 1);
 	clk[mpll_main2] = imx_clk_fixed_factor("mpll_main2", "mpll", 2, 3);
 
 	if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
@@ -121,7 +122,7 @@ int __init mx27_clocks_init(unsigned long fref)
 	clk[per4_div] = imx_clk_divider("per4_div", "mpll_main2", CCM_PCDR1, 24, 6);
 	clk[vpu_sel] = imx_clk_mux("vpu_sel", CCM_CSCR, 21, 1, vpu_sel_clks, ARRAY_SIZE(vpu_sel_clks));
 	clk[vpu_div] = imx_clk_divider("vpu_div", "vpu_sel", CCM_PCDR0, 10, 6);
-	clk[usb_div] = imx_clk_divider("usb_div", "spll", CCM_CSCR, 28, 3);
+	clk[usb_div] = imx_clk_divider("usb_div", "spll_gate", CCM_CSCR, 28, 3);
 	clk[cpu_sel] = imx_clk_mux("cpu_sel", CCM_CSCR, 15, 1, cpu_sel_clks, ARRAY_SIZE(cpu_sel_clks));
 	clk[clko_sel] = imx_clk_mux("clko_sel", CCM_CCSR, 0, 5, clko_sel_clks, ARRAY_SIZE(clko_sel_clks));
 	if (mx27_revision() >= IMX_CHIP_REVISION_2_0)

arch/arm/mach-imx/clk-imx31.c

@@ -34,8 +34,8 @@ static const char *csi_sel[] = { "upll", "spll", };
 static const char *fir_sel[] = { "mcu_main", "upll", "spll" };
 
 enum mx31_clks {
-	ckih, ckil, mpll, spll, upll, mcu_main, hsp, ahb, nfc, ipg, per_div,
-	per, csi, fir, csi_div, usb_div_pre, usb_div_post, fir_div_pre,
+	dummy, ckih, ckil, mpll, spll, upll, mcu_main, hsp, ahb, nfc, ipg,
+	per_div, per, csi, fir, csi_div, usb_div_pre, usb_div_post, fir_div_pre,
 	fir_div_post, sdhc1_gate, sdhc2_gate, gpt_gate, epit1_gate, epit2_gate,
 	iim_gate, ata_gate, sdma_gate, cspi3_gate, rng_gate, uart1_gate,
 	uart2_gate, ssi1_gate, i2c1_gate, i2c2_gate, i2c3_gate, hantro_gate,
@@ -46,12 +46,15 @@ enum mx31_clks {
 };
 
 static struct clk *clk[clk_max];
+static struct clk_onecell_data clk_data;
 
 int __init mx31_clocks_init(unsigned long fref)
 {
 	void __iomem *base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR);
 	int i;
+	struct device_node *np;
 
+	clk[dummy] = imx_clk_fixed("dummy", 0);
 	clk[ckih] = imx_clk_fixed("ckih", fref);
 	clk[ckil] = imx_clk_fixed("ckil", 32768);
 	clk[mpll] = imx_clk_pllv1("mpll", "ckih", base + MXC_CCM_MPCTL);
@@ -116,6 +119,14 @@ int __init mx31_clocks_init(unsigned long fref)
 			pr_err("imx31 clk %d: register failed with %ld\n",
 				i, PTR_ERR(clk[i]));
 
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx31-ccm");
+
+	if (np) {
+		clk_data.clks = clk;
+		clk_data.clk_num = ARRAY_SIZE(clk);
+		of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+	}
+
 	clk_register_clkdev(clk[gpt_gate], "per", "imx-gpt.0");
 	clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0");
 	clk_register_clkdev(clk[cspi1_gate], NULL, "imx31-cspi.0");

arch/arm/mach-imx/clk-imx35.c

@@ -67,13 +67,13 @@ enum mx35_clks {
 
 static struct clk *clk[clk_max];
 
-int __init mx35_clocks_init()
+int __init mx35_clocks_init(void)
 {
 	void __iomem *base = MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR);
 	u32 pdr0, consumer_sel, hsp_sel;
 	struct arm_ahb_div *aad;
 	unsigned char *hsp_div;
-	int i;
+	u32 i;
 
 	pdr0 = __raw_readl(base + MXC_CCM_PDR0);
 	consumer_sel = (pdr0 >> 16) & 0xf;

arch/arm/mach-imx/clk-imx6q.c

@@ -54,8 +54,19 @@
 #define BM_CLPCR_MASK_SCU_IDLE		(0x1 << 26)
 #define BM_CLPCR_MASK_L2CC_IDLE		(0x1 << 27)
 
+#define CGPR				0x64
+#define BM_CGPR_CHICKEN_BIT		(0x1 << 17)
+
 static void __iomem *ccm_base;
 
+void imx6q_set_chicken_bit(void)
+{
+	u32 val = readl_relaxed(ccm_base + CGPR);
+
+	val |= BM_CGPR_CHICKEN_BIT;
+	writel_relaxed(val, ccm_base + CGPR);
+}
+
 int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
 {
 	u32 val = readl_relaxed(ccm_base + CLPCR);
@@ -66,6 +77,7 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
 		break;
 	case WAIT_UNCLOCKED:
 		val |= 0x1 << BP_CLPCR_LPM;
+		val |= BM_CLPCR_ARM_CLK_DIS_ON_LPM;
 		break;
 	case STOP_POWER_ON:
 		val |= 0x2 << BP_CLPCR_LPM;

arch/arm/mach-imx/common.h

@@ -116,9 +116,11 @@ extern u32 *pl310_get_save_ptr(void);
 extern void v7_secondary_startup(void);
 extern void imx_scu_map_io(void);
 extern void imx_smp_prepare(void);
+extern void imx_scu_standby_enable(void);
 #else
 static inline void imx_scu_map_io(void) {}
 static inline void imx_smp_prepare(void) {}
+static inline void imx_scu_standby_enable(void) {}
 #endif
 extern void imx_enable_cpu(int cpu, bool enable);
 extern void imx_set_cpu_jump(int cpu, void *jump_addr);
@@ -128,6 +130,7 @@ extern void imx_gpc_init(void);
 extern void imx_gpc_pre_suspend(void);
 extern void imx_gpc_post_resume(void);
 extern int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode);
+extern void imx6q_set_chicken_bit(void);
 
 extern void imx_cpu_die(unsigned int cpu);
 extern int imx_cpu_kill(unsigned int cpu);

arch/arm/mach-imx/cpuidle-imx6q.c

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/clockchips.h>
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <asm/cpuidle.h>
+#include <asm/proc-fns.h>
+
+#include "common.h"
+#include "cpuidle.h"
+
+static atomic_t master = ATOMIC_INIT(0);
+static DEFINE_SPINLOCK(master_lock);
+
+static int imx6q_enter_wait(struct cpuidle_device *dev,
+			    struct cpuidle_driver *drv, int index)
+{
+	int cpu = dev->cpu;
+
+	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu);
+
+	if (atomic_inc_return(&master) == num_online_cpus()) {
+		/*
+		 * With this lock, we prevent other cpu to exit and enter
+		 * this function again and become the master.
+		 */
+		if (!spin_trylock(&master_lock))
+			goto idle;
+		imx6q_set_lpm(WAIT_UNCLOCKED);
+		cpu_do_idle();
+		imx6q_set_lpm(WAIT_CLOCKED);
+		spin_unlock(&master_lock);
+		goto done;
+	}
+
+idle:
+	cpu_do_idle();
+done:
+	atomic_dec(&master);
+	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu);
+
+	return index;
+}
+
+/*
+ * For each cpu, setup the broadcast timer because local timer
+ * stops for the states other than WFI.
+ */
+static void imx6q_setup_broadcast_timer(void *arg)
+{
+	int cpu = smp_processor_id();
+
+	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ON, &cpu);
+}
+
+static struct cpuidle_driver imx6q_cpuidle_driver = {
+	.name = "imx6q_cpuidle",
+	.owner = THIS_MODULE,
+	.en_core_tk_irqen = 1,
+	.states = {
+		/* WFI */
+		ARM_CPUIDLE_WFI_STATE,
+		/* WAIT */
+		{
+			.exit_latency = 50,
+			.target_residency = 75,
+			.flags = CPUIDLE_FLAG_TIME_VALID,
+			.enter = imx6q_enter_wait,
+			.name = "WAIT",
+			.desc = "Clock off",
+		},
+	},
+	.state_count = 2,
+	.safe_state_index = 0,
+};
+
+int __init imx6q_cpuidle_init(void)
+{
+	/* Need to enable SCU standby for entering WAIT modes */
+	imx_scu_standby_enable();
+
+	/* Set chicken bit to get a reliable WAIT mode support */
+	imx6q_set_chicken_bit();
+
+	/* Configure the broadcast timer on each cpu */
+	on_each_cpu(imx6q_setup_broadcast_timer, NULL, 1);
+
+	return imx_cpuidle_init(&imx6q_cpuidle_driver);
+}

arch/arm/mach-imx/cpuidle.h

@@ -14,9 +14,14 @@
 
 #ifdef CONFIG_CPU_IDLE
 extern int imx_cpuidle_init(struct cpuidle_driver *drv);
+extern int imx6q_cpuidle_init(void);
 #else
 static inline int imx_cpuidle_init(struct cpuidle_driver *drv)
 {
 	return -ENODEV;
 }
+static inline int imx6q_cpuidle_init(void)
+{
+	return -ENODEV;
+}
 #endif

arch/arm/mach-imx/gpc.c

@@ -101,11 +101,16 @@ static void imx_gpc_irq_mask(struct irq_data *d)
 void __init imx_gpc_init(void)
 {
 	struct device_node *np;
+	int i;
 
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc");
 	gpc_base = of_iomap(np, 0);
 	WARN_ON(!gpc_base);
 
+	/* Initially mask all interrupts */
+	for (i = 0; i < IMR_NUM; i++)
+		writel_relaxed(~0, gpc_base + GPC_IMR1 + i * 4);
+
 	/* Register GPC as the secondary interrupt controller behind GIC */
 	gic_arch_extn.irq_mask = imx_gpc_irq_mask;
 	gic_arch_extn.irq_unmask = imx_gpc_irq_unmask;

arch/arm/mach-imx/headsmp.S

@@ -17,53 +17,6 @@
 
 	.section ".text.head", "ax"
 
-/*
- * The secondary kernel init calls v7_flush_dcache_all before it enables
- * the L1; however, the L1 comes out of reset in an undefined state, so
- * the clean + invalidate performed by v7_flush_dcache_all causes a bunch
- * of cache lines with uninitialized data and uninitialized tags to get
- * written out to memory, which does really unpleasant things to the main
- * processor.  We fix this by performing an invalidate, rather than a
- * clean + invalidate, before jumping into the kernel.
- *
- * This funciton is cloned from arch/arm/mach-tegra/headsmp.S, and needs
- * to be called for both secondary cores startup and primary core resume
- * procedures.  Ideally, it should be moved into arch/arm/mm/cache-v7.S.
- */
-ENTRY(v7_invalidate_l1)
-	mov	r0, #0
-	mcr	p15, 0, r0, c7, c5, 0	@ invalidate I cache
-	mcr	p15, 2, r0, c0, c0, 0
-	mrc	p15, 1, r0, c0, c0, 0
-
-	ldr	r1, =0x7fff
-	and	r2, r1, r0, lsr #13
-
-	ldr	r1, =0x3ff
-
-	and	r3, r1, r0, lsr #3	@ NumWays - 1
-	add	r2, r2, #1		@ NumSets
-
-	and	r0, r0, #0x7
-	add	r0, r0, #4	@ SetShift
-
-	clz	r1, r3		@ WayShift
-	add	r4, r3, #1	@ NumWays
-1:	sub	r2, r2, #1	@ NumSets--
-	mov	r3, r4		@ Temp = NumWays
-2:	subs	r3, r3, #1	@ Temp--
-	mov	r5, r3, lsl r1
-	mov	r6, r2, lsl r0
-	orr	r5, r5, r6	@ Reg = (Temp<<WayShift)|(NumSets<<SetShift)
-	mcr	p15, 0, r5, c7, c6, 2
-	bgt	2b
-	cmp	r2, #0
-	bgt	1b
-	dsb
-	isb
-	mov	pc, lr
-ENDPROC(v7_invalidate_l1)
-
 #ifdef CONFIG_SMP
 ENTRY(v7_secondary_startup)
 	bl	v7_invalidate_l1

arch/arm/mach-imx/imx31-dt.c

@@ -18,24 +18,9 @@
 #include "common.h"
 #include "mx31.h"
 
-static const struct of_dev_auxdata imx31_auxdata_lookup[] __initconst = {
-	OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART1_BASE_ADDR,
-			"imx21-uart.0", NULL),
-	OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART2_BASE_ADDR,
-			"imx21-uart.1", NULL),
-	OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART3_BASE_ADDR,
-			"imx21-uart.2", NULL),
-	OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART4_BASE_ADDR,
-			"imx21-uart.3", NULL),
-	OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART5_BASE_ADDR,
-			"imx21-uart.4", NULL),
-	{ /* sentinel */ }
-};
-
 static void __init imx31_dt_init(void)
 {
-	of_platform_populate(NULL, of_default_bus_match_table,
-			     imx31_auxdata_lookup, NULL);
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
 
 static const char *imx31_dt_board_compat[] __initdata = {

arch/arm/mach-imx/mach-imx6q.c

@@ -12,7 +12,6 @@
 
 #include <linux/clk.h>
 #include <linux/clkdev.h>
-#include <linux/cpuidle.h>
 #include <linux/delay.h>
 #include <linux/export.h>
 #include <linux/init.h>
@@ -27,7 +26,6 @@
 #include <linux/regmap.h>
 #include <linux/micrel_phy.h>
 #include <linux/mfd/syscon.h>
-#include <asm/cpuidle.h>
 #include <asm/smp_twd.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
@@ -202,17 +200,14 @@ static void __init imx6q_init_machine(void)
 	imx6q_1588_init();
 }
 
-static struct cpuidle_driver imx6q_cpuidle_driver = {
-	.name			= "imx6q_cpuidle",
-	.owner			= THIS_MODULE,
-	.en_core_tk_irqen	= 1,
-	.states[0]		= ARM_CPUIDLE_WFI_STATE,
-	.state_count		= 1,
-};
-
 static void __init imx6q_init_late(void)
 {
-	imx_cpuidle_init(&imx6q_cpuidle_driver);
+	/*
+	 * WAIT mode is broken on TO 1.0 and 1.1, so there is no point
+	 * to run cpuidle on them.
+	 */
+	if (imx6q_revision() > IMX_CHIP_REVISION_1_1)
+		imx6q_cpuidle_init();
 }
 
 static void __init imx6q_map_io(void)

arch/arm/mach-imx/platsmp.c

@@ -20,6 +20,8 @@
 #include "common.h"
 #include "hardware.h"
 
+#define SCU_STANDBY_ENABLE	(1 << 5)
+
 static void __iomem *scu_base;
 
 static struct map_desc scu_io_desc __initdata = {
@@ -42,6 +44,14 @@ void __init imx_scu_map_io(void)
 	scu_base = IMX_IO_ADDRESS(base);
 }
 
+void imx_scu_standby_enable(void)
+{
+	u32 val = readl_relaxed(scu_base);
+
+	val |= SCU_STANDBY_ENABLE;
+	writel_relaxed(val, scu_base);
+}
+
 static void __cpuinit imx_secondary_init(unsigned int cpu)
 {
 	/*

arch/arm/mach-imx/time.c

@@ -152,7 +152,8 @@ static int v2_set_next_event(unsigned long evt,
 
 	__raw_writel(tcmp, timer_base + V2_TCMP);
 
-	return (int)(tcmp - __raw_readl(timer_base + V2_TCN)) < 0 ?
+	return evt < 0x7fffffff &&
+		(int)(tcmp - __raw_readl(timer_base + V2_TCN)) < 0 ?
 				-ETIME : 0;
 }