v4.19.13 snapshot.
diff --git a/arch/arm/mach-omap2/sram.h b/arch/arm/mach-omap2/sram.h
new file mode 100644
index 0000000..18dc884
--- /dev/null
+++ b/arch/arm/mach-omap2/sram.h
@@ -0,0 +1,62 @@
+/*
+ * Interface for functions that need to be run in internal SRAM
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASSEMBLY__
+#include <plat/sram.h>
+
+extern void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
+ u32 base_cs, u32 force_unlock);
+extern void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
+ u32 mem_type);
+extern u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
+
+extern void omap3_sram_restore_context(void);
+
+/* Do not use these */
+extern void omap24xx_sram_reprogram_clock(u32 ckctl, u32 dpllctl);
+extern unsigned long omap24xx_sram_reprogram_clock_sz;
+
+extern void omap242x_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
+ u32 base_cs, u32 force_unlock);
+extern unsigned long omap242x_sram_ddr_init_sz;
+
+extern u32 omap242x_sram_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val,
+ int bypass);
+extern unsigned long omap242x_sram_set_prcm_sz;
+
+extern void omap242x_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
+ u32 mem_type);
+extern unsigned long omap242x_sram_reprogram_sdrc_sz;
+
+
+extern void omap243x_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
+ u32 base_cs, u32 force_unlock);
+extern unsigned long omap243x_sram_ddr_init_sz;
+
+extern u32 omap243x_sram_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val,
+ int bypass);
+extern unsigned long omap243x_sram_set_prcm_sz;
+
+extern void omap243x_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
+ u32 mem_type);
+extern unsigned long omap243x_sram_reprogram_sdrc_sz;
+
+#ifdef CONFIG_PM
+extern void omap_push_sram_idle(void);
+#else
+static inline void omap_push_sram_idle(void) {}
+#endif /* CONFIG_PM */
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * OMAP2+: define the SRAM PA addresses.
+ * Used by the SRAM management code and the idle sleep code.
+ */
+#define OMAP2_SRAM_PA 0x40200000
+#define OMAP3_SRAM_PA 0x40200000