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

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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>
This commit is contained in:
Chris Packham 2018-05-10 13:28:29 +12:00 • committed by Stefan Roese
parent 00a7767766
commit 2b4ffbf6b4
56 changed files with 7952 additions and 5147 deletions
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47
drivers/ddr/marvell/a38x/mv_ddr_common.c Normal file
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) Marvell International Ltd. and its affiliates
*/
#include "mv_ddr_common.h"
#include "ddr_ml_wrapper.h"
void mv_ddr_ver_print(void)
{
printf("%s %s\n", mv_ddr_version_string, mv_ddr_build_message);
}
/* ceiling division for positive integers */
unsigned int ceil_div(unsigned int x, unsigned int y)
{
return (x % y) ? (x / y + 1) : (x / y);
}
/*
* time to number of clocks calculation based on the rounding algorithm
* using 97.4% inverse factor per JEDEC Standard No. 21-C, 4.1.2.L-4:
* Serial Presence Detect (SPD) for DDR4 SDRAM Modules
*/
unsigned int time_to_nclk(unsigned int t, unsigned int tclk)
{
/* t & tclk parameters are in ps */
return ((unsigned long)t * 1000 / tclk + 974) / 1000;
}
/* round division of two positive integers to the nearest whole number */
int round_div(unsigned int dividend, unsigned int divisor, unsigned int *quotient)
{
if (quotient == NULL) {
printf("%s: error: NULL quotient pointer found\n", __func__);
return MV_FAIL;
}
if (divisor == 0) {
printf("%s: error: division by zero\n", __func__);
return MV_FAIL;
} else {
*quotient = (dividend + divisor / 2) / divisor;
}
return MV_OK;
}