diff options
| -rw-r--r-- | drivers/mmc/socfpga_dw_mmc.c | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c index ed8ba10c93..739c1629a2 100644 --- a/drivers/mmc/socfpga_dw_mmc.c +++ b/drivers/mmc/socfpga_dw_mmc.c @@ -6,6 +6,7 @@ #include <common.h> #include <asm/arch/clock_manager.h> #include <asm/arch/system_manager.h> +#include <clk.h> #include <dm.h> #include <dwmmc.h> #include <errno.h> @@ -70,20 +71,39 @@ static void socfpga_dwmci_clksel(struct dwmci_host *host) CLKMGR_PERPLLGRP_EN_SDMMCCLK_MASK); } -static int socfpga_dwmmc_ofdata_to_platdata(struct udevice *dev) +static int socfpga_dwmmc_get_clk_rate(struct udevice *dev) { - /* FIXME: probe from DT eventually too/ */ - const unsigned long clk = cm_get_mmc_controller_clk_hz(); - struct dwmci_socfpga_priv_data *priv = dev_get_priv(dev); struct dwmci_host *host = &priv->host; - int fifo_depth; +#if CONFIG_IS_ENABLED(CLK) + struct clk clk; + int ret; + + ret = clk_get_by_index(dev, 1, &clk); + if (ret) + return ret; - if (clk == 0) { + host->bus_hz = clk_get_rate(&clk); + + clk_free(&clk); +#else + /* Fixed clock divide by 4 which due to the SDMMC wrapper */ + host->bus_hz = cm_get_mmc_controller_clk_hz(); +#endif + if (host->bus_hz == 0) { printf("DWMMC: MMC clock is zero!"); return -EINVAL; } + return 0; +} + +static int socfpga_dwmmc_ofdata_to_platdata(struct udevice *dev) +{ + struct dwmci_socfpga_priv_data *priv = dev_get_priv(dev); + struct dwmci_host *host = &priv->host; + int fifo_depth; + fifo_depth = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "fifo-depth", 0); if (fifo_depth < 0) { @@ -102,8 +122,6 @@ static int socfpga_dwmmc_ofdata_to_platdata(struct udevice *dev) * We only have one dwmmc block on gen5 SoCFPGA. */ host->dev_index = 0; - /* Fixed clock divide by 4 which due to the SDMMC wrapper */ - host->bus_hz = clk; host->fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_depth / 2 - 1) | TX_WMARK(fifo_depth / 2); priv->drvsel = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev), @@ -123,6 +141,11 @@ static int socfpga_dwmmc_probe(struct udevice *dev) struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); struct dwmci_socfpga_priv_data *priv = dev_get_priv(dev); struct dwmci_host *host = &priv->host; + int ret; + + ret = socfpga_dwmmc_get_clk_rate(dev); + if (ret) + return ret; socfpga_dwmci_reset(dev); @@ -130,7 +153,6 @@ static int socfpga_dwmmc_probe(struct udevice *dev) dwmci_setup_cfg(&plat->cfg, host, host->bus_hz, 400000); host->mmc = &plat->mmc; #else - int ret; ret = add_dwmci(host, host->bus_hz, 400000); if (ret) |