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mmc: hi6220_dw_mmc: Add hi6220 glue code for dw_mmc controller. 

This patch adds the glue code for hi6220 SoC which has 2x synopsis
dw_mmc controllers. This will be used by the hikey board support
in subsequent patches.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Peter Griffin 2015-07-30 18:55:22 +01:00 committed by Tom Rini
parent 242b2f0c7a
commit 447da58b57
3 changed files with 65 additions and 0 deletions
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8
arch/arm/include/asm/arch-hi6220/dwmmc.h Normal file
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@ -0,0 +1,8 @@
/*
* (C) Copyright 2015 Linaro
* Peter Griffin <peter.griffin@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width);

1
drivers/mmc/Makefile
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@ -13,6 +13,7 @@ obj-$(CONFIG_BFIN_SDH) += bfin_sdh.o
obj-$(CONFIG_DAVINCI_MMC) += davinci_mmc.o
obj-$(CONFIG_DWMMC) += dw_mmc.o
obj-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
obj-$(CONFIG_HIKEY_DWMMC) += hi6220_dw_mmc.o
obj-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o
obj-$(CONFIG_FTSDC010) += ftsdc010_mci.o
obj-$(CONFIG_FTSDC021) += ftsdc021_sdhci.o

56
drivers/mmc/hi6220_dw_mmc.c Normal file
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@ -0,0 +1,56 @@
/*
* (C) Copyright 2015 Linaro
* peter.griffin <peter.griffin@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dwmmc.h>
#include <malloc.h>
#include <asm-generic/errno.h>
#define DWMMC_MAX_CH_NUM 4
#define DWMMC_MAX_FREQ 50000000
#define DWMMC_MIN_FREQ 400000
/* Source clock is configured to 100MHz by ATF bl1*/
#define MMC0_DEFAULT_FREQ 100000000
static int hi6220_dwmci_core_init(struct dwmci_host *host, int index)
{
host->name = "HiKey DWMMC";
host->dev_index = index;
/* Add the mmc channel to be registered with mmc core */
if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
printf("DWMMC%d registration failed\n", index);
return -1;
}
return 0;
}
/*
* This function adds the mmc channel to be registered with mmc core.
* index - mmc channel number.
* regbase - register base address of mmc channel specified in 'index'.
* bus_width - operating bus width of mmc channel specified in 'index'.
*/
int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width)
{
struct dwmci_host *host = NULL;
host = calloc(1, sizeof(struct dwmci_host));
if (!host) {
error("dwmci_host calloc failed!\n");
return -ENOMEM;
}
host->ioaddr = (void *)regbase;
host->buswidth = bus_width;
host->bus_hz = MMC0_DEFAULT_FREQ;
return hi6220_dwmci_core_init(host, index);
}