i.MX SoC changes for 5.3:

- Switch imx7d to imx-cpufreq-dt for speed-grading, as imx-cpufreq-dt
    driver can handle speed grading bits on imx7d just like on imx8mq.
  - Improve imx6 cpuidle driver to use raw_spinlock_t.  The change makes
    no difference for !RT build, but is required by RT kernel.
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Merge tag 'imx-soc-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/soc

i.MX SoC changes for 5.3:
 - Switch imx7d to imx-cpufreq-dt for speed-grading, as imx-cpufreq-dt
   driver can handle speed grading bits on imx7d just like on imx8mq.
 - Improve imx6 cpuidle driver to use raw_spinlock_t.  The change makes
   no difference for !RT build, but is required by RT kernel.

* tag 'imx-soc-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading
  ARM: imx6: cpuidle: Use raw_spinlock_t

Signed-off-by: Olof Johansson <olof@lixom.net>

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

@@ -17,22 +17,22 @@
 #include "hardware.h"
 
 static int num_idle_cpus = 0;
-static DEFINE_SPINLOCK(cpuidle_lock);
+static DEFINE_RAW_SPINLOCK(cpuidle_lock);
 
 static int imx6q_enter_wait(struct cpuidle_device *dev,
 			    struct cpuidle_driver *drv, int index)
 {
-	spin_lock(&cpuidle_lock);
+	raw_spin_lock(&cpuidle_lock);
 	if (++num_idle_cpus == num_online_cpus())
 		imx6_set_lpm(WAIT_UNCLOCKED);
-	spin_unlock(&cpuidle_lock);
+	raw_spin_unlock(&cpuidle_lock);
 
 	cpu_do_idle();
 
-	spin_lock(&cpuidle_lock);
+	raw_spin_lock(&cpuidle_lock);
 	if (num_idle_cpus-- == num_online_cpus())
 		imx6_set_lpm(WAIT_CLOCKED);
-	spin_unlock(&cpuidle_lock);
+	raw_spin_unlock(&cpuidle_lock);
 
 	return index;
 }

arch/arm/mach-imx/mach-imx7d.c

@@ -97,6 +97,12 @@ static void __init imx7d_init_machine(void)
 	imx7d_enet_init();
 }
 
+static void __init imx7d_init_late(void)
+{
+	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
+		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
+}
+
 static void __init imx7d_init_irq(void)
 {
 	imx_init_revision_from_anatop();
@@ -113,5 +119,6 @@ static const char *const imx7d_dt_compat[] __initconst = {
 DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
 	.init_irq	= imx7d_init_irq,
 	.init_machine	= imx7d_init_machine,
+	.init_late      = imx7d_init_late,
 	.dt_compat	= imx7d_dt_compat,
 MACHINE_END