/* * Copyright (C) 2011 Alexander Aring <a.aring@phytec.de * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include <common.h> #include <io.h> #include <mfd/twl6030.h> #include <mach/omap4_twl6030_mmc.h> /* MMC voltage */ #define OMAP4_CONTROL_PBIASLITE 0x4A100600 #define OMAP4_MMC1_PBIASLITE_VMODE (1<<21) #define OMAP4_MMC1_PBIASLITE_PWRDNZ (1<<22) #define OMAP4_MMC1_PWRDNZ (1<<26) static void twl6030_mci_write(u8 address, u8 data) { int ret; struct twl6030 *twl6030 = twl6030_get(); ret = twl6030_reg_write(twl6030, address, data); if (ret != 0) printf("TWL6030 Write[0x%x] Error %d\n", address, ret); } void set_up_mmc_voltage_omap4(void) { u32 value; value = readl(OMAP4_CONTROL_PBIASLITE); value &= ~(OMAP4_MMC1_PBIASLITE_PWRDNZ | OMAP4_MMC1_PWRDNZ); writel(value, OMAP4_CONTROL_PBIASLITE); twl6030_mci_write(TWL6030_PMCS_VMMC_CFG_VOLTAGE, TWL6030_VMMC_WR_S | TWL6030_VMMC_VSEL_0 | TWL6030_VMMC_VSEL_2 | TWL6030_VMMC_VSEL_4); twl6030_mci_write(TWL6030_PMCS_VMMC_CFG_STATE, TWL6030_VMMC_STATE0 | TWL6030_VMMC_GRP_APP); value = readl(OMAP4_CONTROL_PBIASLITE); value |= (OMAP4_MMC1_PBIASLITE_VMODE | OMAP4_MMC1_PBIASLITE_PWRDNZ | OMAP4_MMC1_PWRDNZ); writel(value, OMAP4_CONTROL_PBIASLITE); } EXPORT_SYMBOL(set_up_mmc_voltage_omap4);