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

Pull ARM SoC fixes from Olof Johansson:
 "Here's a set of patches for (hopefully) -rc1.  Some of them are fixes,
  but a good number of them also do things such as enable new drivers in
  the defconfigs for platforms that have such devices, increases
  coverage of the multiplatform defconfig and some DTS changes that
  plumbs up some of the devices that now have bindings and driver
  support.

  The commit dates are recent; we've mostly collected these fixes in the
  last few days but I also had to rebuild the branch yesterday to sort
  out some internal conflicts which reset the timestamps.  The changes
  should have been tested by each platform maintainer already (and few
  of them have cross-platform impact) so I'm personally not too
  concerned by it at this time"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
  ARM: multi_v7_defconfig: remove redundant entries and re-enable TI_EDMA
  ARM: multi_v7_defconfig: add mvebu drivers
  clocksource: kona: Add basic use of external clock
  drivers: bus: fix CCI driver kcalloc call parameters swap
  ARM: dts: bcm28155-ap: Fix Card Detection GPIO
  ARM: multi_v7_defconfig: Select CONFIG_AT803X_PHY
  ARM: keystone: config: fix build warning when CONFIG_DMADEVICES is not set
  MAINTAINERS: ARM: SiRF: use regex patterns to involve all SiRF drivers
  ARM: dts: zynq: Add SDHCI nodes
  ARM: hisi: don't select SMP
  ARM: tegra: rebuild tegra_defconfig to add DEBUG_FS
  ARM: multi_v7: copy most options from tegra_defconfig
  ARM: iop32x: fix power off handling for the EM7210 board
  ARM: integrator: restore static map on the CP
  ARM: msm_defconfig: Enable MSM clock drivers
  ARM: dts: msm: Add clock controller nodes and hook into uart
  ARM: OMAP4+: move errata initialization to omap4_pm_init_early
  ARM: OMAP4460: cpuidle: Extend PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD on cpuidle
  ARM: mvebu: fix compilation warning on Armada 370 (i.e. non-SMP)
  ARM: shmobile: r8a7790.dtsi: ficx i2c[0-3] clock reference
  ...

7 files changed, 54 insertions, 10 deletions

diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index e51527835160..a6aae300542c 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -62,11 +62,17 @@ static inline int omap3_pm_init(void)
 
 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP4)
 int omap4_pm_init(void);
+int omap4_pm_init_early(void);
 #else
 static inline int omap4_pm_init(void)
 {
 	return 0;
 }
+
+static inline int omap4_pm_init_early(void)
+{
+	return 0;
+}
 #endif
 
 #ifdef CONFIG_OMAP_MUX
@@ -236,6 +242,7 @@ static inline void __iomem *omap4_get_scu_base(void)
 
 extern void __init gic_init_irq(void);
 extern void gic_dist_disable(void);
+extern void gic_dist_enable(void);
 extern bool gic_dist_disabled(void);
 extern void gic_timer_retrigger(void);
 extern void omap_smc1(u32 fn, u32 arg);
diff --git a/arch/arm/mach-omap2/cpuidle44xx.c b/arch/arm/mach-omap2/cpuidle44xx.c
index 4c8982ae9529..4c158c838d40 100644
--- a/arch/arm/mach-omap2/cpuidle44xx.c
+++ b/arch/arm/mach-omap2/cpuidle44xx.c
@@ -80,6 +80,7 @@ static int omap_enter_idle_coupled(struct cpuidle_device *dev,
 			int index)
 {
 	struct idle_statedata *cx = state_ptr + index;
+	u32 mpuss_can_lose_context = 0;
 
 	/*
 	 * CPU0 has to wait and stay ON until CPU1 is OFF state.
@@ -104,6 +105,9 @@ static int omap_enter_idle_coupled(struct cpuidle_device *dev,
 		}
 	}
 
+	mpuss_can_lose_context = (cx->mpu_state == PWRDM_POWER_RET) &&
+				 (cx->mpu_logic_state == PWRDM_POWER_OFF);
+
 	/*
 	 * Call idle CPU PM enter notifier chain so that
 	 * VFP and per CPU interrupt context is saved.
@@ -118,9 +122,8 @@ static int omap_enter_idle_coupled(struct cpuidle_device *dev,
 		 * Call idle CPU cluster PM enter notifier chain
 		 * to save GIC and wakeupgen context.
 		 */
-		if ((cx->mpu_state == PWRDM_POWER_RET) &&
-			(cx->mpu_logic_state == PWRDM_POWER_OFF))
-				cpu_cluster_pm_enter();
+		if (mpuss_can_lose_context)
+			cpu_cluster_pm_enter();
 	}
 
 	omap4_enter_lowpower(dev->cpu, cx->cpu_state);
@@ -128,9 +131,23 @@ static int omap_enter_idle_coupled(struct cpuidle_device *dev,
 
 	/* Wakeup CPU1 only if it is not offlined */
 	if (dev->cpu == 0 && cpumask_test_cpu(1, cpu_online_mask)) {
+
+		if (IS_PM44XX_ERRATUM(PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD) &&
+		    mpuss_can_lose_context)
+			gic_dist_disable();
+
 		clkdm_wakeup(cpu_clkdm[1]);
 		omap_set_pwrdm_state(cpu_pd[1], PWRDM_POWER_ON);
 		clkdm_allow_idle(cpu_clkdm[1]);
+
+		if (IS_PM44XX_ERRATUM(PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD) &&
+		    mpuss_can_lose_context) {
+			while (gic_dist_disabled()) {
+				udelay(1);
+				cpu_relax();
+			}
+			gic_timer_retrigger();
+		}
 	}
 
 	/*
@@ -143,8 +160,7 @@ static int omap_enter_idle_coupled(struct cpuidle_device *dev,
 	 * Call idle CPU cluster PM exit notifier chain
 	 * to restore GIC and wakeupgen context.
 	 */
-	if (dev->cpu == 0 && (cx->mpu_state == PWRDM_POWER_RET) &&
-		(cx->mpu_logic_state == PWRDM_POWER_OFF))
+	if (dev->cpu == 0 && mpuss_can_lose_context)
 		cpu_cluster_pm_exit();
 
 fail:
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 47381fd8746f..d408b15b4fbf 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -641,6 +641,7 @@ void __init omap4430_init_early(void)
 	omap_cm_base_init();
 	omap4xxx_check_revision();
 	omap4xxx_check_features();
+	omap4_pm_init_early();
 	omap44xx_prm_init();
 	omap44xx_voltagedomains_init();
 	omap44xx_powerdomains_init();
diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
index f991016e2a6a..667915d236f3 100644
--- a/arch/arm/mach-omap2/omap-mpuss-lowpower.c
+++ b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
@@ -271,6 +271,9 @@ int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state)
 	else
 		omap_pm_ops.finish_suspend(save_state);
 
+	if (IS_PM44XX_ERRATUM(PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD) && cpu)
+		gic_dist_enable();
+
 	/*
 	 * Restore the CPUx power state to ON otherwise CPUx
 	 * power domain can transitions to programmed low power
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 75e95d4fb448..17550aa39d0f 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -39,8 +39,6 @@
 
 #define OMAP5_CORE_COUNT	0x2
 
-u16 pm44xx_errata;
-
 /* SCU base address */
 static void __iomem *scu_base;
 
@@ -217,10 +215,8 @@ static void __init omap4_smp_prepare_cpus(unsigned int max_cpus)
 	if (scu_base)
 		scu_enable(scu_base);
 
-	if (cpu_is_omap446x()) {
+	if (cpu_is_omap446x())
 		startup_addr = omap4460_secondary_startup;
-		pm44xx_errata |= PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD;
-	}
 
 	/*
 	 * Write the address of secondary startup routine into the
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index dd893ec4c8f2..6cd3f3772ecf 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -127,6 +127,12 @@ void gic_dist_disable(void)
 		__raw_writel(0x0, gic_dist_base_addr + GIC_DIST_CTRL);
 }
 
+void gic_dist_enable(void)
+{
+	if (gic_dist_base_addr)
+		__raw_writel(0x1, gic_dist_base_addr + GIC_DIST_CTRL);
+}
+
 bool gic_dist_disabled(void)
 {
 	return !(__raw_readl(gic_dist_base_addr + GIC_DIST_CTRL) & 0x1);
diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c
index 82f0698933d8..eefb30cfcabd 100644
--- a/arch/arm/mach-omap2/pm44xx.c
+++ b/arch/arm/mach-omap2/pm44xx.c
@@ -24,6 +24,8 @@
 #include "powerdomain.h"
 #include "pm.h"
 
+u16 pm44xx_errata;
+
 struct power_state {
 	struct powerdomain *pwrdm;
 	u32 next_state;
@@ -199,6 +201,19 @@ static inline int omap4_init_static_deps(void)
 }
 
 /**
+ * omap4_pm_init_early - Does early initialization necessary for OMAP4+ devices
+ *
+ * Initializes basic stuff for power management functionality.
+ */
+int __init omap4_pm_init_early(void)
+{
+	if (cpu_is_omap446x())
+		pm44xx_errata |= PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD;
+
+	return 0;
+}
+
+/**
  * omap4_pm_init - Init routine for OMAP4+ devices
  *
  * Initializes all powerdomain and clockdomain target states