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+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * TI DaVinci platform support for power management.
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc. https://www.ti.com/
+ */
+#ifndef _MACH_DAVINCI_PM_H
+#define _MACH_DAVINCI_PM_H
+
+/*
+ * Caution: Assembly code in sleep.S makes assumtion on the order
+ * of the members of this structure.
+ */
+struct davinci_pm_config {
+ void __iomem *ddr2_ctlr_base;
+ void __iomem *ddrpsc_reg_base;
+ int ddrpsc_num;
+ void __iomem *ddrpll_reg_base;
+ void __iomem *deepsleep_reg;
+ void __iomem *cpupll_reg_base;
+ /*
+ * Note on SLEEPCOUNT:
+ * The SLEEPCOUNT feature is mainly intended for cases in which
+ * the internal oscillator is used. The internal oscillator is
+ * fully disabled in deep sleep mode. When you exist deep sleep
+ * mode, the oscillator will be turned on and will generate very
+ * small oscillations which will not be detected by the deep sleep
+ * counter. Eventually those oscillations will grow to an amplitude
+ * large enough to start incrementing the deep sleep counter.
+ * In this case recommendation from hardware engineers is that the
+ * SLEEPCOUNT be set to 4096. This means that 4096 valid clock cycles
+ * must be detected before the clock is passed to the rest of the
+ * system.
+ * In the case that the internal oscillator is not used and the
+ * clock is generated externally, the SLEEPCOUNT value can be very
+ * small since the clock input is assumed to be stable before SoC
+ * is taken out of deepsleep mode. A value of 128 would be more than
+ * adequate.
+ */
+ int sleepcount;
+};
+
+extern unsigned int davinci_cpu_suspend_sz;
+extern void davinci_cpu_suspend(struct davinci_pm_config *);
+
+#endif