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mmc: omap_hsmmc: Add support to get pinctrl values and max frequency for different hw revisions

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AM572x SR1.1 requires different IODelay values to be used than that used
in AM572x SR2.0. These values are populated in device tree. Add
capability in omap_hsmmc driver to extract IOdelay values for different
silicon revision. The maximum frequency is also reduced when using a ES1.1.
To keep the ability to boot both revsions with the same dtb, those values
can be provided by the platform code.

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 2018-01-30 16:01:41 +01:00 committed by Jaehoon Chung
parent 33c1d77f4a
commit 2d28eeda33
3 changed files with 52 additions and 14 deletions
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7
arch/arm/include/asm/arch-omap5/sys_proto.h
View file

@ -35,6 +35,12 @@ struct pad_conf_entry {
u32 val;
};
struct mmc_platform_fixups {
const char *hw_rev;
u32 unsupported_caps;
u32 max_freq;
};
struct omap_sysinfo {
char *board_string;
};
@ -71,6 +77,7 @@ void force_emif_self_refresh(void);
void get_ioregs(const struct ctrl_ioregs **regs);
void srcomp_enable(void);
void setup_warmreset_time(void);
const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr);
static inline u32 div_round_up(u32 num, u32 den)
{

1
arch/arm/include/asm/omap_mmc.h
View file

@ -70,6 +70,7 @@ struct omap_hsmmc_plat {
struct mmc mmc;
bool cd_inverted;
u32 controller_flags;
const char *hw_rev;
};
/*

58
drivers/mmc/omap_hsmmc.c
View file

@ -96,6 +96,7 @@ struct omap_hsmmc_data {
struct omap_hsmmc_adma_desc *adma_desc_table;
uint desc_slot;
#endif
const char *hw_rev;
#ifdef CONFIG_IODELAY_RECALIBRATION
struct omap_hsmmc_pinctrl_state *default_pinctrl_state;
struct omap_hsmmc_pinctrl_state *hs_pinctrl_state;
@ -1368,6 +1369,7 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
cfg->b_max = 1;
#endif
mmc = mmc_create(cfg, priv);
if (mmc == NULL)
return -1;
@ -1587,20 +1589,28 @@ err_pinctrl_state:
return 0;
}
#define OMAP_HSMMC_SETUP_PINCTRL(capmask, mode) \
do { \
struct omap_hsmmc_pinctrl_state *s; \
if (!(cfg->host_caps & capmask)) \
break; \
\
s = omap_hsmmc_get_pinctrl_by_mode(mmc, #mode); \
if (!s) { \
debug("%s: no pinctrl for %s\n", \
mmc->dev->name, #mode); \
cfg->host_caps &= ~(capmask); \
} else { \
priv->mode##_pinctrl_state = s; \
} \
#define OMAP_HSMMC_SETUP_PINCTRL(capmask, mode) \
do { \
struct omap_hsmmc_pinctrl_state *s = NULL; \
char str[20]; \
if (!(cfg->host_caps & capmask)) \
break; \
\
if (priv->hw_rev) { \
sprintf(str, "%s-%s", #mode, priv->hw_rev); \
s = omap_hsmmc_get_pinctrl_by_mode(mmc, str); \
} \
\
if (!s) \
s = omap_hsmmc_get_pinctrl_by_mode(mmc, #mode); \
\
if (!s) { \
debug("%s: no pinctrl for %s\n", \
mmc->dev->name, #mode); \
cfg->host_caps &= ~(capmask); \
} else { \
priv->mode##_pinctrl_state = s; \
} \
} while (0)
static int omap_hsmmc_get_pinctrl_state(struct mmc *mmc)
@ -1635,12 +1645,22 @@ static int omap_hsmmc_get_pinctrl_state(struct mmc *mmc)
#endif
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
#ifdef CONFIG_OMAP54XX
__weak const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr)
{
return NULL;
}
#endif
static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
{
struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
struct omap_mmc_of_data *of_data = (void *)dev_get_driver_data(dev);
struct mmc_config *cfg = &plat->cfg;
#ifdef CONFIG_OMAP54XX
const struct mmc_platform_fixups *fixups;
#endif
const void *fdt = gd->fdt_blob;
int node = dev_of_offset(dev);
int ret;
@ -1664,6 +1684,15 @@ static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
if (of_data)
plat->controller_flags |= of_data->controller_flags;
#ifdef CONFIG_OMAP54XX
fixups = platform_fixups_mmc(devfdt_get_addr(dev));
if (fixups) {
plat->hw_rev = fixups->hw_rev;
cfg->host_caps &= ~fixups->unsupported_caps;
cfg->f_max = fixups->max_freq;
}
#endif
#ifdef OMAP_HSMMC_USE_GPIO
plat->cd_inverted = fdtdec_get_bool(fdt, node, "cd-inverted");
#endif
@ -1695,6 +1724,7 @@ static int omap_hsmmc_probe(struct udevice *dev)
cfg->name = "OMAP SD/MMC";
priv->base_addr = plat->base_addr;
priv->controller_flags = plat->controller_flags;
priv->hw_rev = plat->hw_rev;
#ifdef OMAP_HSMMC_USE_GPIO
priv->cd_inverted = plat->cd_inverted;
#endif