659f150e90
Support the setup of the mmc voltage, when booting OMAP4 with twl6030 from nand. Signed-off-by: Alexander Aring <a.aring@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* Copyright (C) 2011 Alexander Aring <a.aring@phytec.de
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <io.h>
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#include <mci/twl6030.h>
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/* MMC voltage */
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#define OMAP4_CONTROL_PBIASLITE 0x4A100600
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#define OMAP4_MMC1_PBIASLITE_VMODE (1<<21)
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#define OMAP4_MMC1_PBIASLITE_PWRDNZ (1<<22)
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#define OMAP4_MMC1_PWRDNZ (1<<26)
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void set_up_mmc_voltage_omap4(void)
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{
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u32 value;
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value = readl(OMAP4_CONTROL_PBIASLITE);
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value &= ~(OMAP4_MMC1_PBIASLITE_PWRDNZ | OMAP4_MMC1_PWRDNZ);
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writel(value, OMAP4_CONTROL_PBIASLITE);
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twl6030_mci_power_init();
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value = readl(OMAP4_CONTROL_PBIASLITE);
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value |= (OMAP4_MMC1_PBIASLITE_VMODE | OMAP4_MMC1_PBIASLITE_PWRDNZ |
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OMAP4_MMC1_PWRDNZ);
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writel(value, OMAP4_CONTROL_PBIASLITE);
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}
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EXPORT_SYMBOL(set_up_mmc_voltage_omap4);
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