diff options
author | Peter Griffin <peter.griffin@linaro.org> | 2015-07-30 18:55:22 +0100 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2015-08-12 20:48:01 -0400 |
commit | 447da58b576db418080867183f31a6957ccbbd7a (patch) | |
tree | d72ac4bba1f12ec6be3f94c2f9c085edf1e95776 /drivers/mmc/hi6220_dw_mmc.c | |
parent | 242b2f0c7adc932196e91e922ce4980d31800b0c (diff) |
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>
Diffstat (limited to 'drivers/mmc/hi6220_dw_mmc.c')
-rw-r--r-- | drivers/mmc/hi6220_dw_mmc.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/mmc/hi6220_dw_mmc.c b/drivers/mmc/hi6220_dw_mmc.c new file mode 100644 index 0000000000..731458c18c --- /dev/null +++ b/drivers/mmc/hi6220_dw_mmc.c @@ -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); +} |