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
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93 lines
3.1 KiB
93 lines
3.1 KiB
/*
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* TNETV107X: Asynchronous EMIF Configuration
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/mux.h>
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#define ASYNC_EMIF_BASE TNETV107X_ASYNC_EMIF_CNTRL_BASE
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#define ASYNC_EMIF_CONFIG(cs) (ASYNC_EMIF_BASE+0x10+(cs)*4)
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#define ASYNC_EMIF_ONENAND_CONTROL (ASYNC_EMIF_BASE+0x5c)
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#define ASYNC_EMIF_NAND_CONTROL (ASYNC_EMIF_BASE+0x60)
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#define ASYNC_EMIF_WAITCYCLE_CONFIG (ASYNC_EMIF_BASE+0x4)
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#define CONFIG_SELECT_STROBE(v) ((v) ? 1 << 31 : 0)
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#define CONFIG_EXTEND_WAIT(v) ((v) ? 1 << 30 : 0)
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#define CONFIG_WR_SETUP(v) (((v) & 0x0f) << 26)
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#define CONFIG_WR_STROBE(v) (((v) & 0x3f) << 20)
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#define CONFIG_WR_HOLD(v) (((v) & 0x07) << 17)
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#define CONFIG_RD_SETUP(v) (((v) & 0x0f) << 13)
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#define CONFIG_RD_STROBE(v) (((v) & 0x3f) << 7)
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#define CONFIG_RD_HOLD(v) (((v) & 0x07) << 4)
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#define CONFIG_TURN_AROUND(v) (((v) & 0x03) << 2)
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#define CONFIG_WIDTH(v) (((v) & 0x03) << 0)
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#define NUM_CS 4
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#define set_config_field(reg, field, val) \
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do { \
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if (val != -1) { \
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reg &= ~CONFIG_##field(0xffffffff); \
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reg |= CONFIG_##field(val); \
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} \
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} while (0)
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void configure_async_emif(int cs, struct async_emif_config *cfg)
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{
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unsigned long tmp;
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if (cfg->mode == ASYNC_EMIF_MODE_NAND) {
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tmp = __raw_readl(ASYNC_EMIF_NAND_CONTROL);
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tmp |= (1 << cs);
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__raw_writel(tmp, ASYNC_EMIF_NAND_CONTROL);
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} else if (cfg->mode == ASYNC_EMIF_MODE_ONENAND) {
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tmp = __raw_readl(ASYNC_EMIF_ONENAND_CONTROL);
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tmp |= (1 << cs);
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__raw_writel(tmp, ASYNC_EMIF_ONENAND_CONTROL);
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}
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tmp = __raw_readl(ASYNC_EMIF_CONFIG(cs));
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set_config_field(tmp, SELECT_STROBE, cfg->select_strobe);
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set_config_field(tmp, EXTEND_WAIT, cfg->extend_wait);
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set_config_field(tmp, WR_SETUP, cfg->wr_setup);
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set_config_field(tmp, WR_STROBE, cfg->wr_strobe);
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set_config_field(tmp, WR_HOLD, cfg->wr_hold);
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set_config_field(tmp, RD_SETUP, cfg->rd_setup);
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set_config_field(tmp, RD_STROBE, cfg->rd_strobe);
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set_config_field(tmp, RD_HOLD, cfg->rd_hold);
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set_config_field(tmp, TURN_AROUND, cfg->turn_around);
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set_config_field(tmp, WIDTH, cfg->width);
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__raw_writel(tmp, ASYNC_EMIF_CONFIG(cs));
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}
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void init_async_emif(int num_cs, struct async_emif_config *config)
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{
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int cs;
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clk_enable(TNETV107X_LPSC_AEMIF);
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for (cs = 0; cs < num_cs; cs++)
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configure_async_emif(cs, config + cs);
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}
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