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

Pull ARM SoC specific changes from Arnd Bergmann:
 "These changes are all to SoC-specific code, a total of 33 branches on
  17 platforms were pulled into this.  Like last time, Renesas sh-mobile
  is now the platform with the most changes, followed by OMAP and
  EXYNOS.

  Two new platforms, TI Keystone and Rockchips RK3xxx are added in this
  branch, both containing almost no platform specific code at all, since
  they are using generic subsystem interfaces for clocks, pinctrl,
  interrupts etc.  The device drivers are getting merged through the
  respective subsystem maintainer trees.

  One more SoC (u300) is now multiplatform capable and several others
  (shmobile, exynos, msm, integrator, kirkwood, clps711x) are moving
  towards that goal with this series but need more work.

  Also noteworthy is the work on PCI here, which is traditionally part
  of the SoC specific code.  With the changes done by Thomas Petazzoni,
  we can now more easily have PCI host controller drivers as loadable
  modules and keep them separate from the platform code in
  drivers/pci/host.  This has already led to the discovery that three
  platforms (exynos, spear and imx) are actually using an identical PCIe
  host controller and will be able to share a driver once support for
  spear and imx is added."

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (480 commits)
  ARM: integrator: let pciv3 use mem/premem from device tree
  ARM: integrator: set local side PCI addresses right
  ARM: dts: Add pcie controller node for exynos5440-ssdk5440
  ARM: dts: Add pcie controller node for Samsung EXYNOS5440 SoC
  ARM: EXYNOS: Enable PCIe support for Exynos5440
  pci: Add PCIe driver for Samsung Exynos
  ARM: OMAP5: voltagedomain data: remove temporary OMAP4 voltage data
  ARM: keystone: Move CPU bringup code to dedicated asm file
  ARM: multiplatform: always pick one CPU type
  ARM: imx: select syscon for IMX6SL
  ARM: keystone: select ARM_ERRATA_798181 only for SMP
  ARM: imx: Synertronixx scb9328 needs to select SOC_IMX1
  ARM: OMAP2+: AM43x: resolve SMP related build error
  dmaengine: edma: enable build for AM33XX
  ARM: edma: Add EDMA crossbar event mux support
  ARM: edma: Add DT and runtime PM support to the private EDMA API
  dmaengine: edma: Add TI EDMA device tree binding
  arm: add basic support for Rockchip RK3066a boards
  arm: add debug uarts for rockchip rk29xx and rk3xxx series
  arm: Add basic clocks for Rockchip rk3066a SoCs
  ...

1 files changed, 37 insertions, 10 deletions

diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c
index 695e0d73bf85..7cdc79a9657c 100644
--- a/arch/arm/mach-imx/system.c
+++ b/arch/arm/mach-imx/system.c
@@ -21,6 +21,8 @@
 #include <linux/io.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
 
 #include <asm/system_misc.h>
 #include <asm/proc-fns.h>
@@ -30,6 +32,7 @@
 #include "hardware.h"
 
 static void __iomem *wdog_base;
+static struct clk *wdog_clk;
 
 /*
  * Reset the system. It is called by machine_restart().
@@ -38,16 +41,13 @@ void mxc_restart(char mode, const char *cmd)
 {
 	unsigned int wcr_enable;
 
-	if (cpu_is_mx1()) {
-		wcr_enable = (1 << 0);
-	} else {
-		struct clk *clk;
+	if (wdog_clk)
+		clk_enable(wdog_clk);
 
-		clk = clk_get_sys("imx2-wdt.0", NULL);
-		if (!IS_ERR(clk))
-			clk_prepare_enable(clk);
+	if (cpu_is_mx1())
+		wcr_enable = (1 << 0);
+	else
 		wcr_enable = (1 << 2);
-	}
 
 	/* Assert SRS signal */
 	__raw_writew(wcr_enable, wdog_base);
@@ -55,7 +55,7 @@ void mxc_restart(char mode, const char *cmd)
 	/* wait for reset to assert... */
 	mdelay(500);
 
-	printk(KERN_ERR "Watchdog reset failed to assert reset\n");
+	pr_err("%s: Watchdog reset failed to assert reset\n", __func__);
 
 	/* delay to allow the serial port to show the message */
 	mdelay(50);
@@ -64,7 +64,34 @@ void mxc_restart(char mode, const char *cmd)
 	soft_restart(0);
 }
 
-void mxc_arch_reset_init(void __iomem *base)
+void __init mxc_arch_reset_init(void __iomem *base)
 {
 	wdog_base = base;
+
+	wdog_clk = clk_get_sys("imx2-wdt.0", NULL);
+	if (IS_ERR(wdog_clk)) {
+		pr_warn("%s: failed to get wdog clock\n", __func__);
+		wdog_clk = NULL;
+		return;
+	}
+
+	clk_prepare(wdog_clk);
+}
+
+void __init mxc_arch_reset_init_dt(void)
+{
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx21-wdt");
+	wdog_base = of_iomap(np, 0);
+	WARN_ON(!wdog_base);
+
+	wdog_clk = of_clk_get(np, 0);
+	if (IS_ERR(wdog_clk)) {
+		pr_warn("%s: failed to get wdog clock\n", __func__);
+		wdog_clk = NULL;
+		return;
+	}
+
+	clk_prepare(wdog_clk);
 }