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e4bf588609
This patch toggles power to reset the cf card. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
34 lines
1006 B
C
34 lines
1006 B
C
/*
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* Altera CF drvier
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*
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* (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <common.h>
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#include <asm/io.h>
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#if defined(CONFIG_IDE_RESET) && defined(CONFIG_SYS_CF_CTL_BASE)
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/* ide_set_reset for Altera CF interface */
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#define ALTERA_CF_CTL_STATUS 0
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#define ALTERA_CF_IDE_CTL 4
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#define ALTERA_CF_CTL_STATUS_PRESENT_MSK (0x1)
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#define ALTERA_CF_CTL_STATUS_POWER_MSK (0x2)
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#define ALTERA_CF_CTL_STATUS_RESET_MSK (0x4)
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#define ALTERA_CF_CTL_STATUS_IRQ_EN_MSK (0x8)
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#define ALTERA_CF_IDE_CTL_IRQ_EN_MSK (0x1)
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void ide_set_reset(int idereset)
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{
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int i;
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writel(idereset ? ALTERA_CF_CTL_STATUS_RESET_MSK :
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ALTERA_CF_CTL_STATUS_POWER_MSK,
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CONFIG_SYS_CF_CTL_BASE + ALTERA_CF_CTL_STATUS);
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/* wait 500 ms for power to stabilize */
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for (i = 0; i < 500; i++)
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udelay(1000);
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}
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#endif
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