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....@intel.com>
Reviewed-by: Simon Glass <s...@chromium.org>
---
v3:
- Removed #ifdef CONFIG_DM_RESET switch.
v5:
- Added Simon's Reviewed-by.
---
drivers/mmc/socfpga_dw_mmc.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c
index d0a0362..4be4eb5 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;
--
2.2.2
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