Add optional reset support into the Denali NAND driver. In case there is
a valid reset entry in the DT, the reset gets deasserted before the NAND
controller gets used.
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Masahiro Yamada <yamada.masah...@socionext.com>
---
drivers/mtd/nand/denali_dt.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/mtd/nand/denali_dt.c b/drivers/mtd/nand/denali_dt.c
index 65a7797f0f..6fcd7d3843 100644
--- a/drivers/mtd/nand/denali_dt.c
+++ b/drivers/mtd/nand/denali_dt.c
@@ -9,6 +9,7 @@
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/printk.h>
+#include <reset.h>
#include "denali.h"
@@ -64,6 +65,7 @@ static int denali_dt_probe(struct udevice *dev)
const struct denali_dt_data *data;
struct clk clk;
struct resource res;
+ struct reset_ctl reset_ctl;
int ret;
data = (void *)dev_get_driver_data(dev);
@@ -97,6 +99,13 @@ static int denali_dt_probe(struct udevice *dev)
denali->clk_x_rate = clk_get_rate(&clk);
+ ret = reset_get_by_index(dev, 0, &reset_ctl);
+ if (!ret) {
+ reset_assert(&reset_ctl);
+ udelay(2);
+ reset_deassert(&reset_ctl);
+ }
+
return denali_init(denali);
}
--
2.17.1
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