Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-05-09 03:21:51 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

mmc: add a new mmc parameter to disable mmc clock

Browse source 
mmc clock has to be disabled in certain cases like during
the voltage switch sequence. Modify mmc_set_clock function
to take disable as an argument that signifies if the
clock has to be enabled or disabled.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
This commit is contained in:
Kishon Vijay Abraham I 2017-09-21 16:30:03 +02:00 • committed by Jaehoon Chung
parent fb7c3beb51
commit 35f6782055
3 changed files with 18 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

12
include/mmc.h
View file

@ -472,6 +472,7 @@ struct mmc {
void *priv;
uint has_init;
int high_capacity;
bool clk_disable; /* true if the clock can be turned off */
uint bus_width;
uint clock;
enum mmc_voltage signal_voltage;
@ -567,7 +568,16 @@ int mmc_unbind(struct udevice *dev);
int mmc_initialize(bd_t *bis);
int mmc_init(struct mmc *mmc);
int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
int mmc_set_clock(struct mmc *mmc, uint clock);
/**
* mmc_set_clock() - change the bus clock
* @mmc: MMC struct
* @clock: bus frequency in Hz
* @disable: flag indicating if the clock must on or off
* @return 0 if OK, -ve on error
*/
int mmc_set_clock(struct mmc *mmc, uint clock, bool disable);
struct mmc *find_mmc_device(int dev_num);
int mmc_set_dev(int dev_num);
void print_mmc_devices(char separator);