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:
 "A first set of batches of fixes for 3.13.  The diffstat is large
  mostly because we're adding a defconfig for a family that's been
  lacking it, and there's some missing clock information added for i.MX
  and OMAP.

  The at91 new code is around dealing with RTC/RTT reset at boot to fix
  possible hangs due to pending wakeup interrupts coming in during early
  boot"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (29 commits)
  ARM: OMAP2+: Fix build for dra7xx without omap4 and 5
  ARM: OMAP2+: omap_device: maintain sane runtime pm status around suspend/resume
  doc: devicetree: Add bindings documentation for omap-des driver
  ARM: dts: doc: Document missing compatible property for omap-sham driver
  ARM: OMAP3: Beagle: fix return value check in beagle_opp_init()
  ARM: at91: fix hanged boot due to early rtt-interrupt
  ARM: at91: fix hanged boot due to early rtc-interrupt
  video: exynos_mipi_dsim: Remove unused variable
  ARM: highbank: only select errata 764369 if SMP
  ARM: sti: only select errata 764369 if SMP
  ARM: tegra: init fuse before setting reset handler
  ARM: vt8500: add defconfig for v6/v7 chips
  ARM: integrator_cp: Set LCD{0,1} enable lines when turning on CLCD
  ARM: OMAP: devicetree: fix SPI node compatible property syntax items
  pinctrl: single: call pcs_soc->rearm() whenever IRQ mask is changed
  ARM: OMAP2+: smsc911x: fix return value check in gpmc_smsc911x_init()
  MAINTAINERS: drop discontinued mailing list
  ARM: dts: i.MX51: Fix OTG PHY clock
  ARM: imx: set up pllv3 POWER and BYPASS sequentially
  ARM: imx: pllv3 needs relock in .set_rate() call
  ...

14 files changed, 120 insertions, 1 deletions

diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index c1b737097c95..90aab2d5a07f 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-obj-y           := irq.o gpio.o setup.o
+obj-y           := irq.o gpio.o setup.o sysirq_mask.o
 obj-m           :=
 obj-n           :=
 obj-            :=
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index f8629a3fa245..d6a1fa85371d 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -351,6 +351,8 @@ static void __init at91sam9260_initialize(void)
         arm_pm_idle = at91sam9_idle;
         arm_pm_restart = at91sam9_alt_restart;
 
+        at91_sysirq_mask_rtt(AT91SAM9260_BASE_RTT);
+
         /* Register GPIO subsystem */
         at91_gpio_init(at91sam9260_gpio, 3);
 }
diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
index 1f3867a17a28..23ba1d8a1531 100644
--- a/arch/arm/mach-at91/at91sam9261.c
+++ b/arch/arm/mach-at91/at91sam9261.c
@@ -293,6 +293,8 @@ static void __init at91sam9261_initialize(void)
         arm_pm_idle = at91sam9_idle;
         arm_pm_restart = at91sam9_alt_restart;
 
+        at91_sysirq_mask_rtt(AT91SAM9261_BASE_RTT);
+
         /* Register GPIO subsystem */
         at91_gpio_init(at91sam9261_gpio, 3);
 }
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index 90d455d294a1..7eccb0fc57bc 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -330,6 +330,9 @@ static void __init at91sam9263_initialize(void)
         arm_pm_idle = at91sam9_idle;
         arm_pm_restart = at91sam9_alt_restart;
 
+        at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT0);
+        at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT1);
+
         /* Register GPIO subsystem */
         at91_gpio_init(at91sam9263_gpio, 5);
 }
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index e9bf0b8f40eb..9405aa08b104 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -379,6 +379,9 @@ static void __init at91sam9g45_initialize(void)
         arm_pm_idle = at91sam9_idle;
         arm_pm_restart = at91sam9g45_restart;
 
+        at91_sysirq_mask_rtc(AT91SAM9G45_BASE_RTC);
+        at91_sysirq_mask_rtt(AT91SAM9G45_BASE_RTT);
+
         /* Register GPIO subsystem */
         at91_gpio_init(at91sam9g45_gpio, 5);
 }
diff --git a/arch/arm/mach-at91/at91sam9n12.c b/arch/arm/mach-at91/at91sam9n12.c
index 2d895a297739..388ec3aec4b9 100644
--- a/arch/arm/mach-at91/at91sam9n12.c
+++ b/arch/arm/mach-at91/at91sam9n12.c
@@ -224,7 +224,13 @@ static void __init at91sam9n12_map_io(void)
         at91_init_sram(0, AT91SAM9N12_SRAM_BASE, AT91SAM9N12_SRAM_SIZE);
 }
 
+static void __init at91sam9n12_initialize(void)
+{
+        at91_sysirq_mask_rtc(AT91SAM9N12_BASE_RTC);
+}
+
 AT91_SOC_START(at91sam9n12)
         .map_io = at91sam9n12_map_io,
         .register_clocks = at91sam9n12_register_clocks,
+        .init = at91sam9n12_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 88995af09c04..0750ffb7e6b1 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -296,6 +296,9 @@ static void __init at91sam9rl_initialize(void)
         arm_pm_idle = at91sam9_idle;
         arm_pm_restart = at91sam9_alt_restart;
 
+        at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
+        at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
+
         /* Register GPIO subsystem */
         at91_gpio_init(at91sam9rl_gpio, 4);
 }
diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c
index 916e5a142917..e8a2e075a1b8 100644
--- a/arch/arm/mach-at91/at91sam9x5.c
+++ b/arch/arm/mach-at91/at91sam9x5.c
@@ -322,6 +322,11 @@ static void __init at91sam9x5_map_io(void)
         at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
 }
 
+static void __init at91sam9x5_initialize(void)
+{
+        at91_sysirq_mask_rtc(AT91SAM9X5_BASE_RTC);
+}
+
 /* --------------------------------------------------------------------
  *  Interrupt initialization
  * -------------------------------------------------------------------- */
@@ -329,4 +334,5 @@ static void __init at91sam9x5_map_io(void)
 AT91_SOC_START(at91sam9x5)
         .map_io = at91sam9x5_map_io,
         .register_clocks = at91sam9x5_register_clocks,
+        .init = at91sam9x5_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index dc6e2f5f804d..26dee3ce9397 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -34,6 +34,8 @@ extern int  __init at91_aic_of_init(struct device_node *node,
                                     struct device_node *parent);
 extern int  __init at91_aic5_of_init(struct device_node *node,
                                     struct device_node *parent);
+extern void __init at91_sysirq_mask_rtc(u32 rtc_base);
+extern void __init at91_sysirq_mask_rtt(u32 rtt_base);
 
 
  /* Timer */
diff --git a/arch/arm/mach-at91/include/mach/at91sam9n12.h b/arch/arm/mach-at91/include/mach/at91sam9n12.h
index d374b87c0459..0151bcf6163c 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9n12.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9n12.h
@@ -49,6 +49,11 @@
 #define AT91SAM9N12_BASE_USART3 0xf8028000
 
 /*
+ * System Peripherals
+ */
+#define AT91SAM9N12_BASE_RTC    0xfffffeb0
+
+/*
  * Internal Memory.
  */
 #define AT91SAM9N12_SRAM_BASE   0x00300000      /* Internal SRAM base address */
diff --git a/arch/arm/mach-at91/include/mach/at91sam9x5.h b/arch/arm/mach-at91/include/mach/at91sam9x5.h
index c75ee19b58d3..2fc76c49e97c 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9x5.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9x5.h
@@ -55,6 +55,11 @@
 #define AT91SAM9X5_BASE_USART2  0xf8024000
 
 /*
+ * System Peripherals
+ */
+#define AT91SAM9X5_BASE_RTC     0xfffffeb0
+
+/*
  * Internal Memory.
  */
 #define AT91SAM9X5_SRAM_BASE    0x00300000      /* Internal SRAM base address */
diff --git a/arch/arm/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
index 31096a8aaf1d..25613d8c6dcd 100644
--- a/arch/arm/mach-at91/include/mach/sama5d3.h
+++ b/arch/arm/mach-at91/include/mach/sama5d3.h
@@ -73,6 +73,11 @@
 #define SAMA5D3_BASE_USART3     0xf8024000
 
 /*
+ * System Peripherals
+ */
+#define SAMA5D3_BASE_RTC        0xfffffeb0
+
+/*
  * Internal Memory
  */
 #define SAMA5D3_SRAM_BASE       0x00300000      /* Internal SRAM base address */
diff --git a/arch/arm/mach-at91/sama5d3.c b/arch/arm/mach-at91/sama5d3.c
index 401279715ab1..3ea86428ee09 100644
--- a/arch/arm/mach-at91/sama5d3.c
+++ b/arch/arm/mach-at91/sama5d3.c
@@ -371,7 +371,13 @@ static void __init sama5d3_map_io(void)
         at91_init_sram(0, SAMA5D3_SRAM_BASE, SAMA5D3_SRAM_SIZE);
 }
 
+static void __init sama5d3_initialize(void)
+{
+        at91_sysirq_mask_rtc(SAMA5D3_BASE_RTC);
+}
+
 AT91_SOC_START(sama5d3)
         .map_io = sama5d3_map_io,
         .register_clocks = sama5d3_register_clocks,
+        .init = sama5d3_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/sysirq_mask.c b/arch/arm/mach-at91/sysirq_mask.c
new file mode 100644
index 000000000000..2ba694f9626b
--- /dev/null
+++ b/arch/arm/mach-at91/sysirq_mask.c
@@ -0,0 +1,71 @@
+/*
+ * sysirq_mask.c - System-interrupt masking
+ *
+ * Copyright (C) 2013 Johan Hovold <jhovold@gmail.com>
+ *
+ * Functions to disable system interrupts from backup-powered peripherals.
+ *
+ * The RTC and RTT-peripherals are generally powered by backup power (VDDBU)
+ * and are not reset on wake-up, user, watchdog or software reset. This means
+ * that their interrupts may be enabled during early boot (e.g. after a user
+ * reset).
+ *
+ * As the RTC and RTT share the system-interrupt line with the PIT, an
+ * interrupt occurring before a handler has been installed would lead to the
+ * system interrupt being disabled and prevent the system from booting.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/io.h>
+#include <mach/at91_rtt.h>
+
+#include "generic.h"
+
+#define AT91_RTC_IDR    0x24    /* Interrupt Disable Register */
+#define AT91_RTC_IMR    0x28    /* Interrupt Mask Register */
+
+void __init at91_sysirq_mask_rtc(u32 rtc_base)
+{
+        void __iomem *base;
+        u32 mask;
+
+        base = ioremap(rtc_base, 64);
+        if (!base)
+                return;
+
+        mask = readl_relaxed(base + AT91_RTC_IMR);
+        if (mask) {
+                pr_info("AT91: Disabling rtc irq\n");
+                writel_relaxed(mask, base + AT91_RTC_IDR);
+                (void)readl_relaxed(base + AT91_RTC_IMR);       /* flush */
+        }
+
+        iounmap(base);
+}
+
+void __init at91_sysirq_mask_rtt(u32 rtt_base)
+{
+        void __iomem *base;
+        void __iomem *reg;
+        u32 mode;
+
+        base = ioremap(rtt_base, 16);
+        if (!base)
+                return;
+
+        reg = base + AT91_RTT_MR;
+
+        mode = readl_relaxed(reg);
+        if (mode & (AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN)) {
+                pr_info("AT91: Disabling rtt irq\n");
+                mode &= ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);
+                writel_relaxed(mode, reg);
+                (void)readl_relaxed(reg);                       /* flush */
+        }
+
+        iounmap(base);
+}