upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.1 KiB
71 lines
2.1 KiB
/*
|
|
* Keystone2: Asynchronous EMIF Configuration
|
|
*
|
|
* (C) Copyright 2012-2014
|
|
* Texas Instruments Incorporated, <www.ti.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/emif_defs.h>
|
|
|
|
#define AEMIF_CFG_SELECT_STROBE(v) ((v) ? 1 << 31 : 0)
|
|
#define AEMIF_CFG_EXTEND_WAIT(v) ((v) ? 1 << 30 : 0)
|
|
#define AEMIF_CFG_WR_SETUP(v) (((v) & 0x0f) << 26)
|
|
#define AEMIF_CFG_WR_STROBE(v) (((v) & 0x3f) << 20)
|
|
#define AEMIF_CFG_WR_HOLD(v) (((v) & 0x07) << 17)
|
|
#define AEMIF_CFG_RD_SETUP(v) (((v) & 0x0f) << 13)
|
|
#define AEMIF_CFG_RD_STROBE(v) (((v) & 0x3f) << 7)
|
|
#define AEMIF_CFG_RD_HOLD(v) (((v) & 0x07) << 4)
|
|
#define AEMIF_CFG_TURN_AROUND(v) (((v) & 0x03) << 2)
|
|
#define AEMIF_CFG_WIDTH(v) (((v) & 0x03) << 0)
|
|
|
|
#define set_config_field(reg, field, val) \
|
|
do { \
|
|
if (val != -1) { \
|
|
reg &= ~AEMIF_CFG_##field(0xffffffff); \
|
|
reg |= AEMIF_CFG_##field(val); \
|
|
} \
|
|
} while (0)
|
|
|
|
void configure_async_emif(int cs, struct async_emif_config *cfg)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
if (cfg->mode == ASYNC_EMIF_MODE_NAND) {
|
|
tmp = __raw_readl(&davinci_emif_regs->nandfcr);
|
|
tmp |= (1 << cs);
|
|
__raw_writel(tmp, &davinci_emif_regs->nandfcr);
|
|
|
|
} else if (cfg->mode == ASYNC_EMIF_MODE_ONENAND) {
|
|
tmp = __raw_readl(&davinci_emif_regs->one_nand_cr);
|
|
tmp |= (1 << cs);
|
|
__raw_writel(tmp, &davinci_emif_regs->one_nand_cr);
|
|
}
|
|
|
|
tmp = __raw_readl(&davinci_emif_regs->abncr[cs]);
|
|
|
|
set_config_field(tmp, SELECT_STROBE, cfg->select_strobe);
|
|
set_config_field(tmp, EXTEND_WAIT, cfg->extend_wait);
|
|
set_config_field(tmp, WR_SETUP, cfg->wr_setup);
|
|
set_config_field(tmp, WR_STROBE, cfg->wr_strobe);
|
|
set_config_field(tmp, WR_HOLD, cfg->wr_hold);
|
|
set_config_field(tmp, RD_SETUP, cfg->rd_setup);
|
|
set_config_field(tmp, RD_STROBE, cfg->rd_strobe);
|
|
set_config_field(tmp, RD_HOLD, cfg->rd_hold);
|
|
set_config_field(tmp, TURN_AROUND, cfg->turn_around);
|
|
set_config_field(tmp, WIDTH, cfg->width);
|
|
|
|
__raw_writel(tmp, &davinci_emif_regs->abncr[cs]);
|
|
}
|
|
|
|
void init_async_emif(int num_cs, struct async_emif_config *config)
|
|
{
|
|
int cs;
|
|
|
|
for (cs = 0; cs < num_cs; cs++)
|
|
configure_async_emif(cs, config + cs);
|
|
}
|
|
|