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>
18 static int mx27_suspend_enter(suspend_state_t state)
20 void __iomem *ccm_base;
21 struct device_node *np;
24 np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
25 ccm_base = of_iomap(np, 0);
30 /* Clear MPEN and SPEN to disable MPLL/SPLL */
31 cscr = imx_readl(ccm_base);
33 imx_writel(cscr, ccm_base);
44 static const struct platform_suspend_ops mx27_suspend_ops = {
45 .enter = mx27_suspend_enter,
46 .valid = suspend_valid_only_mem,
49 void __init imx27_pm_init(void)
51 suspend_set_ops(&mx27_suspend_ops);