[PATCH 04/13] ARM: imx27: Retrieve the CCM base address from devicetree

[Fabio Estevam]

Now that imx27 has been converted to a devicetree-only platform,
retrieve the CCM base address from devicetree.

Signed-off-by: Fabio Estevam <festevam at gmail.com>
---
 arch/arm/mach-imx/pm-imx27.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-imx/pm-imx27.c b/arch/arm/mach-imx/pm-imx27.c
index d943535566c8..020e6deb67c8 100644
--- a/arch/arm/mach-imx/pm-imx27.c
+++ b/arch/arm/mach-imx/pm-imx27.c
@@ -7,6 +7,7 @@
  * modify it under the terms of the GNU General Public License.
  */
 
+#include <linux/of_address.h>
 #include <linux/kernel.h>
 #include <linux/suspend.h>
 #include <linux/io.h>
@@ -15,13 +16,20 @@
 
 static int mx27_suspend_enter(suspend_state_t state)
 {
+	void __iomem *ccm_base;
+	struct device_node *np;
 	u32 cscr;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
+	ccm_base = of_iomap(np, 0);
+	BUG_ON(!ccm_base);
+
 	switch (state) {
 	case PM_SUSPEND_MEM:
 		/* Clear MPEN and SPEN to disable MPLL/SPLL */
-		cscr = imx_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
+		cscr = imx_readl(ccm_base);
 		cscr &= 0xFFFFFFFC;
-		imx_writel(cscr, MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
+		imx_writel(cscr, ccm_base);
 		/* Executes WFI */
 		cpu_do_idle();
 		break;
-- 
2.17.1