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mmc: am654_sdhci: Add support for AM65x SR2.0

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Add Support for AM65x PG2.0. Use the SoC bus framework to fixup
the platform data and do DLL calibration if the revision is 1.0

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Faiz Abbas 2021-02-04 15:10:50 +05:30 committed by Lokesh Vutla
parent 5b29fd4a8d
commit 8c32b5f370
1 changed files with 30 additions and 0 deletions
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30
drivers/mmc/am654_sdhci.c
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@ -12,6 +12,7 @@
#include <power-domain.h>
#include <regmap.h>
#include <sdhci.h>
#include <soc.h>
#include <dm/device_compat.h>
#include <linux/bitops.h>
#include <linux/err.h>
@ -292,6 +293,11 @@ const struct sdhci_ops am654_sdhci_ops = {
};
const struct am654_driver_data am654_drv_data = {
.ops = &am654_sdhci_ops,
.flags = DLL_PRESENT | IOMUX_PRESENT | FREQSEL_2_BIT | STRBSEL_4_BIT,
};
const struct am654_driver_data am654_sr1_drv_data = {
.ops = &am654_sdhci_ops,
.flags = IOMUX_PRESENT | FREQSEL_2_BIT | DLL_PRESENT | DLL_CALIB |
STRBSEL_4_BIT,
@ -326,6 +332,11 @@ const struct am654_driver_data j721e_4bit_drv_data = {
.flags = IOMUX_PRESENT,
};
const struct soc_attr am654_sdhci_soc_attr[] = {
{ .family = "AM65X", .revision = "SR1.0", .data = &am654_sr1_drv_data},
{/* sentinel */}
};
static int sdhci_am654_get_otap_delay(struct udevice *dev,
struct mmc_config *cfg)
{
@ -365,6 +376,8 @@ static int am654_sdhci_probe(struct udevice *dev)
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct sdhci_host *host = dev_get_priv(dev);
struct mmc_config *cfg = &plat->cfg;
const struct soc_attr *soc;
const struct am654_driver_data *soc_drv_data;
struct clk clk;
unsigned long clock;
int ret;
@ -394,6 +407,14 @@ static int am654_sdhci_probe(struct udevice *dev)
return ret;
host->ops = drv_data->ops;
/* Update ops based on SoC revision */
soc = soc_device_match(am654_sdhci_soc_attr);
if (soc && soc->data) {
soc_drv_data = soc->data;
host->ops = soc_drv_data->ops;
}
host->mmc->priv = host;
upriv->mmc = host->mmc;
@ -458,9 +479,18 @@ static int am654_sdhci_bind(struct udevice *dev)
struct am654_driver_data *drv_data =
(struct am654_driver_data *)dev_get_driver_data(dev);
struct am654_sdhci_plat *plat = dev_get_plat(dev);
const struct soc_attr *soc;
const struct am654_driver_data *soc_drv_data;
plat->flags = drv_data->flags;
/* Update flags based on SoC revision */
soc = soc_device_match(am654_sdhci_soc_attr);
if (soc && soc->data) {
soc_drv_data = soc->data;
plat->flags = soc_drv_data->flags;
}
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
}