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UPSTREAM: mtd: nand: denali_dt: add clock support 

Enable clock in the probe hook.  The clock rate will be necessary
when setup_data_interface hook is supported.

Change-Id: Iaeddd7e3b407d2142c65a71bec58c438d4baf911
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
(cherry picked from commit a89b9bc0950b7dd5f43a88e211be4b2acd58dad7)
This commit is contained in:
Masahiro Yamada 2017-10-14 02:21:18 +09:00 committed by Kever Yang
parent 5a03037fab
commit 4aa0b5b785
2 changed files with 13 additions and 0 deletions
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1
drivers/mtd/nand/denali.h
View File

@ -435,6 +435,7 @@ struct nand_buf {
struct denali_nand_info {
struct nand_chip nand;
unsigned long clk_x_rate; /* bus interface clock rate */
int flash_bank; /* currently selected chip */
int status;
int platform;

12
drivers/mtd/nand/denali_dt.c
View File

@ -6,6 +6,7 @@
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <linux/io.h>
#include <linux/ioport.h>
@ -52,6 +53,7 @@ static int denali_dt_probe(struct udevice *dev)
{
struct denali_nand_info *denali = dev_get_priv(dev);
const struct denali_dt_data *data;
struct clk clk;
struct resource res;
int ret;
@ -73,6 +75,16 @@ static int denali_dt_probe(struct udevice *dev)
denali->flash_mem = devm_ioremap(dev, res.start, resource_size(&res));
ret = clk_get_by_index(dev, 0, &clk);
if (ret)
return ret;
ret = clk_enable(&clk);
if (ret)
return ret;
denali->clk_x_rate = clk_get_rate(&clk);
return denali_init(denali);
}