Merge tag 'imx-soc-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc

Merge "i.MX SoC update for 4.6" from Shawn Guo:

- Enable big endian mode support for i.MX platform
- Add support for i.MX6QP SoC which is the latest i.MX6 family addition
- Add basic suspend/resume support for i.MX25
- A couple of i.MX7D support updates
- A few random code cleanups

* tag 'imx-soc-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx: Make reset_control_ops const
  ARM: imx: Do L2 errata only if the L2 cache isn't enabled
  ARM: imx: select ARM_CPU_SUSPEND only for imx6
  ARM: mx25: Add basic suspend/resume support
  ARM: imx: Add msl code support for imx6qp
  ARM: imx: enable big endian mode
  ARM: imx: use endian-safe readl/readw/writel/writew
  ARM: imx7d: correct chip version information
  ARM: imx: select HAVE_ARM_ARCH_TIMER if selected i.MX7D
  ARM: imx6: fix cleanup path in imx6q_suspend_init()

1 files changed, 7 insertions, 3 deletions

diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c
index 51c35013b673..105d1ce4ed9d 100644
--- a/arch/arm/mach-imx/system.c
+++ b/arch/arm/mach-imx/system.c
@@ -54,7 +54,7 @@ void mxc_restart(enum reboot_mode mode, const char *cmd)
 		wcr_enable = (1 << 2);
 
 	/* Assert SRS signal */
-	__raw_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
 	/*
 	 * Due to imx6q errata ERR004346 (WDOG: WDOG SRS bit requires to be
 	 * written twice), we add another two writes to ensure there must be at
@@ -62,8 +62,8 @@ void mxc_restart(enum reboot_mode mode, const char *cmd)
 	 * the target check here, since the writes shouldn't be a huge burden
 	 * for other platforms.
 	 */
-	__raw_writew(wcr_enable, wdog_base);
-	__raw_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
 
 	/* wait for reset to assert... */
 	mdelay(500);
@@ -106,6 +106,9 @@ void __init imx_init_l2cache(void)
 		goto out;
 	}
 
+	if (readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)
+		goto skip_if_enabled;
+
 	/* Configure the L2 PREFETCH and POWER registers */
 	val = readl_relaxed(l2x0_base + L310_PREFETCH_CTRL);
 	val |= 0x70800000;
@@ -122,6 +125,7 @@ void __init imx_init_l2cache(void)
 		val &= ~(1 << 30 | 1 << 23);
 	writel_relaxed(val, l2x0_base + L310_PREFETCH_CTRL);
 
+skip_if_enabled:
 	iounmap(l2x0_base);
 	of_node_put(np);