mirror of
https://github.com/Fishwaldo/u-boot.git
synced 2025-03-19 05:31:32 +00:00
mmc: zynq: Add fdt max-frequency support
The maximum supported peripheral clock frequency of the zynq depends on the IO routing. The MIO and EMIO support a maximum frequency of 50 MHz respectively 25 MHz. Use the max-frequency value of the device tree to determine the maximal supported peripheral clock frequency. Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
parent
e0f4de1afc
commit
61e745d131
1 changed files with 8 additions and 1 deletions
|
@ -14,6 +14,8 @@
|
||||||
#include <malloc.h>
|
#include <malloc.h>
|
||||||
#include <sdhci.h>
|
#include <sdhci.h>
|
||||||
|
|
||||||
|
DECLARE_GLOBAL_DATA_PTR;
|
||||||
|
|
||||||
#ifndef CONFIG_ZYNQ_SDHCI_MIN_FREQ
|
#ifndef CONFIG_ZYNQ_SDHCI_MIN_FREQ
|
||||||
# define CONFIG_ZYNQ_SDHCI_MIN_FREQ 0
|
# define CONFIG_ZYNQ_SDHCI_MIN_FREQ 0
|
||||||
#endif
|
#endif
|
||||||
|
@ -21,6 +23,7 @@
|
||||||
struct arasan_sdhci_plat {
|
struct arasan_sdhci_plat {
|
||||||
struct mmc_config cfg;
|
struct mmc_config cfg;
|
||||||
struct mmc mmc;
|
struct mmc mmc;
|
||||||
|
unsigned int f_max;
|
||||||
};
|
};
|
||||||
|
|
||||||
static int arasan_sdhci_probe(struct udevice *dev)
|
static int arasan_sdhci_probe(struct udevice *dev)
|
||||||
|
@ -60,7 +63,7 @@ static int arasan_sdhci_probe(struct udevice *dev)
|
||||||
|
|
||||||
host->max_clk = clock;
|
host->max_clk = clock;
|
||||||
|
|
||||||
ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ZYNQ_SDHCI_MAX_FREQ,
|
ret = sdhci_setup_cfg(&plat->cfg, host, plat->f_max,
|
||||||
CONFIG_ZYNQ_SDHCI_MIN_FREQ);
|
CONFIG_ZYNQ_SDHCI_MIN_FREQ);
|
||||||
host->mmc = &plat->mmc;
|
host->mmc = &plat->mmc;
|
||||||
if (ret)
|
if (ret)
|
||||||
|
@ -74,11 +77,15 @@ static int arasan_sdhci_probe(struct udevice *dev)
|
||||||
|
|
||||||
static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
|
static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
|
||||||
{
|
{
|
||||||
|
struct arasan_sdhci_plat *plat = dev_get_platdata(dev);
|
||||||
struct sdhci_host *host = dev_get_priv(dev);
|
struct sdhci_host *host = dev_get_priv(dev);
|
||||||
|
|
||||||
host->name = dev->name;
|
host->name = dev->name;
|
||||||
host->ioaddr = (void *)dev_get_addr(dev);
|
host->ioaddr = (void *)dev_get_addr(dev);
|
||||||
|
|
||||||
|
plat->f_max = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
|
||||||
|
"max-frequency", CONFIG_ZYNQ_SDHCI_MAX_FREQ);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Add table
Reference in a new issue