diff options
| -rw-r--r-- | arch/arm/mach-at91/include/mach/atmel_sdhci.h | 13 | ||||
| -rw-r--r-- | drivers/mmc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/atmel_sdhci.c | 40 |
3 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/atmel_sdhci.h b/arch/arm/mach-at91/include/mach/atmel_sdhci.h new file mode 100644 index 0000000000..9652bc20c8 --- /dev/null +++ b/arch/arm/mach-at91/include/mach/atmel_sdhci.h @@ -0,0 +1,13 @@ +/* + * Copyright (c) 2015 Atmel Corporation + * Wenyou.Yang <wenyou.yang@atmel.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ATMEL_SDHCI_H +#define __ATMEL_SDHCI_H + +int atmel_sdhci_init(void *regbase, u32 id); + +#endif diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 99d02954ed..5d357056dd 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_DM_MMC) += mmc-uclass.o obj-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o +obj-$(CONFIG_ATMEL_SDHCI) += atmel_sdhci.o obj-$(CONFIG_BCM2835_SDHCI) += bcm2835_sdhci.o obj-$(CONFIG_BFIN_SDH) += bfin_sdh.o obj-$(CONFIG_DAVINCI_MMC) += davinci_mmc.o diff --git a/drivers/mmc/atmel_sdhci.c b/drivers/mmc/atmel_sdhci.c new file mode 100644 index 0000000000..24b68b640b --- /dev/null +++ b/drivers/mmc/atmel_sdhci.c @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2015 Atmel Corporation + * Wenyou.Yang <wenyou.yang@atmel.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <malloc.h> +#include <sdhci.h> +#include <asm/arch/clk.h> + +#define ATMEL_SDHC_MIN_FREQ 400000 + +int atmel_sdhci_init(void *regbase, u32 id) +{ + struct sdhci_host *host; + u32 max_clk, min_clk = ATMEL_SDHC_MIN_FREQ; + + host = (struct sdhci_host *)calloc(1, sizeof(struct sdhci_host)); + if (!host) { + printf("%s: sdhci_host calloc failed\n", __func__); + return -ENOMEM; + } + + host->name = "atmel_sdhci"; + host->ioaddr = regbase; + host->quirks = 0; + host->version = sdhci_readw(host, SDHCI_HOST_VERSION); + max_clk = at91_get_periph_generated_clk(id); + if (!max_clk) { + printf("%s: Failed to get the proper clock\n", __func__); + free(host); + return -ENODEV; + } + + add_sdhci(host, max_clk, min_clk); + + return 0; +} |
