ARM: mvebu: a38x: sync ddr training code with upstream

This syncs drivers/ddr/marvell/a38x/ with the mv_ddr-armada-17.10 branch
of https://github.com/MarvellEmbeddedProcessors/mv-ddr-marvell.git.

The upstream code is incorporated omitting the ddr4 and apn806 and
folding the nested a38x directory up one level. After that a
semi-automated step is used to drop unused features with unifdef

  find drivers/ddr/marvell/a38x/ -name '*.[ch]' | \
    xargs unifdef -m -UMV_DDR -UMV_DDR_ATF -UCONFIG_DDR4 \
		-UCONFIG_APN806 -UCONFIG_MC_STATIC \
		-UCONFIG_MC_STATIC_PRINT -UCONFIG_PHY_STATIC \
		-UCONFIG_64BIT

INTER_REGS_BASE is updated to be defined as SOC_REGS_PHY_BASE.

Some now empty files are removed and the ternary license is replaced
with a SPDX GPL-2.0+ identifier.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/ddr/marvell/a38x/mv_ddr_common.h b/drivers/ddr/marvell/a38x/mv_ddr_common.h
new file mode 100644
index 0000000000..c71ff442ed
--- /dev/null
+++ b/drivers/ddr/marvell/a38x/mv_ddr_common.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) Marvell International Ltd. and its affiliates
+ */
+
+#ifndef _MV_DDR_COMMON_H
+#define _MV_DDR_COMMON_H
+
+extern const char mv_ddr_build_message[];
+extern const char mv_ddr_version_string[];
+
+#define MV_DDR_NUM_BITS_IN_BYTE	8
+#define MV_DDR_MEGA_BITS	(1024 * 1024)
+#define MV_DDR_32_BITS_MASK	0xffffffff
+
+unsigned int ceil_div(unsigned int x, unsigned int y);
+unsigned int time_to_nclk(unsigned int t, unsigned int tclk);
+int round_div(unsigned int dividend, unsigned int divisor, unsigned int *quotient);
+
+#endif /* _MV_DDR_COMMON_H */