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mmc: Add support for Xilinx Zynq sdhci controller 

Add support for SD, MMC and eMMC card on Xilinx Zynq.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@ti.com>
This commit is contained in:
Michal Simek 2013-04-22 14:56:49 +02:00
parent f97d7e8be9
commit 293eb33fcb
6 changed files with 79 additions and 0 deletions
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2
arch/arm/include/asm/arch-zynq/hardware.h
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@ -29,6 +29,8 @@
#define ZYNQ_SCUTIMER_BASEADDR 0xF8F00600
#define ZYNQ_GEM_BASEADDR0 0xE000B000
#define ZYNQ_GEM_BASEADDR1 0xE000C000
#define ZYNQ_SDHCI_BASEADDR0 0xE0100000
#define ZYNQ_SDHCI_BASEADDR1 0xE0101000
/* Reflect slcr offsets */
struct slcr_regs {

3
arch/arm/include/asm/arch-zynq/sys_proto.h
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@ -28,4 +28,7 @@ extern void zynq_slcr_unlock(void);
extern void zynq_slcr_cpu_reset(void);
extern void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk);
/* Driver extern functions */
extern int zynq_sdhci_init(u32 regbase);
#endif /* _SYS_PROTO_H_ */

17
board/xilinx/zynq/board.c
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@ -54,6 +54,23 @@ int board_eth_init(bd_t *bis)
}
#endif
#ifdef CONFIG_CMD_MMC
int board_mmc_init(bd_t *bd)
{
int ret = 0;
#if defined(CONFIG_ZYNQ_SDHCI)
# if defined(CONFIG_ZYNQ_SDHCI0)
ret = zynq_sdhci_init(ZYNQ_SDHCI_BASEADDR0);
# endif
# if defined(CONFIG_ZYNQ_SDHCI1)
ret |= zynq_sdhci_init(ZYNQ_SDHCI_BASEADDR1);
# endif
#endif
return ret;
}
#endif
int dram_init(void)
{
gd->ram_size = CONFIG_SYS_SDRAM_SIZE;

1
drivers/mmc/Makefile
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@ -49,6 +49,7 @@ COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
COBJS-$(CONFIG_TEGRA_MMC) += tegra_mmc.o
COBJS-$(CONFIG_DWMMC) += dw_mmc.o
COBJS-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
COBJS-$(CONFIG_ZYNQ_SDHCI) += zynq_sdhci.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)

40
drivers/mmc/zynq_sdhci.c Normal file
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@ -0,0 +1,40 @@
/*
* (C) Copyright 2013 Inc.
*
* Xilinx Zynq SD Host Controller Interface
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <common.h>
#include <malloc.h>
#include <sdhci.h>
#include <asm/arch/sys_proto.h>
int zynq_sdhci_init(u32 regbase)
{
struct sdhci_host *host = NULL;
host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
if (!host) {
printf("zynq_sdhci_init: sdhci_host malloc fail\n");
return 1;
}
host->name = "zynq_sdhci";
host->ioaddr = (void *)regbase;
host->quirks = SDHCI_QUIRK_NO_CD | SDHCI_QUIRK_WAIT_SEND_CMD;
host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
host->host_caps = MMC_MODE_HC;
add_sdhci(host, 52000000, 52000000 >> 9);
return 0;
}

16
include/configs/zynq.h
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@ -56,6 +56,22 @@
#define CONFIG_ZYNQ_GEM0
#define CONFIG_ZYNQ_GEM_PHY_ADDR0 7
#define CONFIG_ZYNQ_SDHCI
#define CONFIG_ZYNQ_SDHCI0
/* MMC */
#if defined(CONFIG_ZYNQ_SDHCI0) || defined(CONFIG_ZYNQ_SDHCI1)
# define CONFIG_MMC
# define CONFIG_GENERIC_MMC
# define CONFIG_SDHCI
# define CONFIG_ZYNQ_SDHCI
# define CONFIG_CMD_MMC
# define CONFIG_CMD_FAT
# define CONFIG_SUPPORT_VFAT
# define CONFIG_CMD_EXT2
# define CONFIG_DOS_PARTITION
#endif
#if defined(CONFIG_ZYNQ_DCC)
# define CONFIG_ARM_DCC
# define CONFIG_CPU_V6 /* Required by CONFIG_ARM_DCC */