diff options
| author | Ley Foon Tan | 2018-06-14 18:45:21 +0800 |
|---|---|---|
| committer | Tom Rini | 2018-07-09 15:28:24 -0400 |
| commit | 2d4d6937720ba4cb4c8593b802d06ccb716a2002 (patch) | |
| tree | 4a6cf65f20a7ccff5dad8808dac60287bfdef9a0 /drivers/mmc | |
| parent | d99894dd3a713ea6226ac39a7e332b55cf8aca49 (diff) | |
mmc: dwmmc: socfpga: Add reset ctrl to driver
Add code to reset all reset signals as in mmc DT node. A reset property
is an optional feature, so only print out a warning and do not fail if a
reset property is not present.
If a reset property is discovered, then use it to deassert, thus
bringing the IP out of reset.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/socfpga_dw_mmc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c index d0a0362d7ea..ed8ba10c932 100644 --- a/drivers/mmc/socfpga_dw_mmc.c +++ b/drivers/mmc/socfpga_dw_mmc.c @@ -13,6 +13,7 @@ #include <linux/libfdt.h> #include <linux/err.h> #include <malloc.h> +#include <reset.h> DECLARE_GLOBAL_DATA_PTR; @@ -33,6 +34,20 @@ struct dwmci_socfpga_priv_data { unsigned int smplsel; }; +static void socfpga_dwmci_reset(struct udevice *dev) +{ + struct reset_ctl_bulk reset_bulk; + int ret; + + ret = reset_get_bulk(dev, &reset_bulk); + if (ret) { + dev_warn(dev, "Can't get reset: %d\n", ret); + return; + } + + reset_deassert_bulk(&reset_bulk); +} + static void socfpga_dwmci_clksel(struct dwmci_host *host) { struct dwmci_socfpga_priv_data *priv = host->priv; @@ -109,6 +124,8 @@ static int socfpga_dwmmc_probe(struct udevice *dev) struct dwmci_socfpga_priv_data *priv = dev_get_priv(dev); struct dwmci_host *host = &priv->host; + socfpga_dwmci_reset(dev); + #ifdef CONFIG_BLK dwmci_setup_cfg(&plat->cfg, host, host->bus_hz, 400000); host->mmc = &plat->mmc; |