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

Pull ARM SoC platform changes from Olof Johansson:
 "New and updated SoC support.  Also included are some cleanups where
  the platform maintainers hadn't separated cleanups from new developent
  in separate branches.

  Some of the larger things worth pointing out:

   - A large set of changes from Alexandre Belloni and Nicolas Ferre
     preparing at91 platforms for multiplatform and cleaning up quite a
     bit in the process.

   - Removal of CSR's "Marco" SoC platform that never made it out to the
     market.  We love seeing these since it means the vendor published
     support before product was out, which is exactly what we want!

  New platforms this release are:

   - Conexant Digicolor (CX92755 SoC)
   - Hisilicon HiP01 SoC
   - CSR/sirf Atlas7 SoC
   - ST STiH418 SoC
   - Common code changes for Nvidia Tegra132 (64-bit SoC)

  We're seeing more and more platforms having a harder time labelling
  changes as cleanups vs new development -- which is a good sign that
  we've come quite far on the cleanup effort.  So over time we might
  start combining the cleanup and new-development branches more"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (124 commits)
  ARM: at91/trivial: unify functions and machine names
  ARM: at91: remove at91_dt_initialize and machine init_early()
  ARM: at91: change board files into SoC files
  ARM: at91: remove at91_boot_soc
  ARM: at91: move alternative initial mapping to board-dt-sama5.c
  ARM: at91: merge all SOC_AT91SAM9xxx
  ARM: at91: at91rm9200: set idle and restart from rm9200_dt_device_init()
  ARM: digicolor: select syscon and timer
  ARM: zynq: Simplify SLCR initialization
  ARM: zynq: PM: Fixed simple typo.
  ARM: zynq: Setup default gpio number for Xilinx Zynq
  ARM: digicolor: add low level debug support
  ARM: initial support for Conexant Digicolor CX92755 SoC
  ARM: OMAP2+: Add dm816x hwmod support
  ARM: OMAP2+: Add clock domain support for dm816x
  ARM: OMAP2+: Add board-generic.c entry for ti81xx
  ARM: at91: pm: remove warning to remove SOC_AT91SAM9263 usage
  ARM: at91: remove unused mach/system_rev.h
  ARM: at91: stop using HAVE_AT91_DBGUx
  ARM: at91: fix ordering of SRAM and PM initialization
  ...

1 files changed, 105 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c
new file mode 100644
index 000000000000..5a36722b089d
--- /dev/null
+++ b/arch/arm/mach-imx/cpuidle-imx6sx.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2014 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/cpuidle.h>
+#include <linux/cpu_pm.h>
+#include <linux/module.h>
+#include <asm/cpuidle.h>
+#include <asm/proc-fns.h>
+#include <asm/suspend.h>
+
+#include "common.h"
+#include "cpuidle.h"
+
+static int imx6sx_idle_finish(unsigned long val)
+{
+        cpu_do_idle();
+
+        return 0;
+}
+
+static int imx6sx_enter_wait(struct cpuidle_device *dev,
+                            struct cpuidle_driver *drv, int index)
+{
+        imx6q_set_lpm(WAIT_UNCLOCKED);
+
+        switch (index) {
+        case 1:
+                cpu_do_idle();
+                break;
+        case 2:
+                imx6_enable_rbc(true);
+                imx_gpc_set_arm_power_in_lpm(true);
+                imx_set_cpu_jump(0, v7_cpu_resume);
+                /* Need to notify there is a cpu pm operation. */
+                cpu_pm_enter();
+                cpu_cluster_pm_enter();
+
+                cpu_suspend(0, imx6sx_idle_finish);
+
+                cpu_cluster_pm_exit();
+                cpu_pm_exit();
+                imx_gpc_set_arm_power_in_lpm(false);
+                imx6_enable_rbc(false);
+                break;
+        default:
+                break;
+        }
+
+        imx6q_set_lpm(WAIT_CLOCKED);
+
+        return index;
+}
+
+static struct cpuidle_driver imx6sx_cpuidle_driver = {
+        .name = "imx6sx_cpuidle",
+        .owner = THIS_MODULE,
+        .states = {
+                /* WFI */
+                ARM_CPUIDLE_WFI_STATE,
+                /* WAIT */
+                {
+                        .exit_latency = 50,
+                        .target_residency = 75,
+                        .flags = CPUIDLE_FLAG_TIMER_STOP,
+                        .enter = imx6sx_enter_wait,
+                        .name = "WAIT",
+                        .desc = "Clock off",
+                },
+                /* WAIT + ARM power off  */
+                {
+                        /*
+                         * ARM gating 31us * 5 + RBC clear 65us
+                         * and some margin for SW execution, here set it
+                         * to 300us.
+                         */
+                        .exit_latency = 300,
+                        .target_residency = 500,
+                        .enter = imx6sx_enter_wait,
+                        .name = "LOW-POWER-IDLE",
+                        .desc = "ARM power off",
+                },
+        },
+        .state_count = 3,
+        .safe_state_index = 0,
+};
+
+int __init imx6sx_cpuidle_init(void)
+{
+        imx6_enable_rbc(false);
+        /*
+         * set ARM power up/down timing to the fastest,
+         * sw2iso and sw can be set to one 32K cycle = 31us
+         * except for power up sw2iso which need to be
+         * larger than LDO ramp up time.
+         */
+        imx_gpc_set_arm_power_up_timing(2, 1);
+        imx_gpc_set_arm_power_down_timing(1, 1);
+
+        return cpuidle_register(&imx6sx_cpuidle_driver, NULL);
+}