[PATCH v2 05/21] mmc: am654_sdhci: Add support for AM65x SR2.0
Faiz Abbas
faiz_abbas at ti.com
Fri Oct 16 13:08:39 CEST 2020
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 at ti.com>
---
drivers/mmc/am654_sdhci.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c
index 145373ad46..71798be765 100644
--- a/drivers/mmc/am654_sdhci.c
+++ b/drivers/mmc/am654_sdhci.c
@@ -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_platdata(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);
}
--
2.17.1
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