2 * i.MX27 Power Management Routines
4 * Based on Freescale's BSP
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License.
10 #include <linux/of_address.h>
11 #include <linux/kernel.h>
12 #include <linux/suspend.h>
17 static int mx27_suspend_enter(suspend_state_t state)
19 void __iomem *ccm_base;
20 struct device_node *np;
23 np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
24 ccm_base = of_iomap(np, 0);
29 /* Clear MPEN and SPEN to disable MPLL/SPLL */
30 cscr = imx_readl(ccm_base);
32 imx_writel(cscr, ccm_base);
43 static const struct platform_suspend_ops mx27_suspend_ops = {
44 .enter = mx27_suspend_enter,
45 .valid = suspend_valid_only_mem,
48 void __init imx27_pm_init(void)
50 suspend_set_ops(&mx27_suspend_ops);