mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 14:40:41 +00:00
2b4ffbf6b4
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>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
// 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;
|
|
}
|