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mmc: sdhci_am654: Add Support for SR2.0

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

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200619125801.9530-4-faiz_abbas@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Faiz Abbas 2020-06-19 18:27:57 +05:30 committed by Ulf Hansson
parent 23514731f4
commit 09db994358
1 changed files with 22 additions and 1 deletions
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23
drivers/mmc/host/sdhci_am654.c
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@ -11,6 +11,7 @@
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/sys_soc.h>
#include "cqhci.h"
#include "sdhci-pltfm.h"
@ -324,12 +325,17 @@ static const struct sdhci_pltfm_data sdhci_am654_pdata = {
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
};
static const struct sdhci_am654_driver_data sdhci_am654_drvdata = {
static const struct sdhci_am654_driver_data sdhci_am654_sr1_drvdata = {
.pdata = &sdhci_am654_pdata,
.flags = IOMUX_PRESENT | FREQSEL_2_BIT | STRBSEL_4_BIT | DLL_PRESENT |
DLL_CALIB,
};
static const struct sdhci_am654_driver_data sdhci_am654_drvdata = {
.pdata = &sdhci_am654_pdata,
.flags = IOMUX_PRESENT | FREQSEL_2_BIT | STRBSEL_4_BIT | DLL_PRESENT,
};
static struct sdhci_ops sdhci_j721e_8bit_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
@ -376,6 +382,14 @@ static const struct sdhci_am654_driver_data sdhci_j721e_4bit_drvdata = {
.flags = IOMUX_PRESENT,
};
static const struct soc_device_attribute sdhci_am654_devices[] = {
{ .family = "AM65X",
.revision = "SR1.0",
.data = &sdhci_am654_sr1_drvdata
},
{/* sentinel */}
};
static void sdhci_am654_dumpregs(struct mmc_host *mmc)
{
sdhci_dumpregs(mmc_priv(mmc));
@ -587,6 +601,7 @@ static const struct of_device_id sdhci_am654_of_match[] = {
static int sdhci_am654_probe(struct platform_device *pdev)
{
const struct sdhci_am654_driver_data *drvdata;
const struct soc_device_attribute *soc;
struct sdhci_pltfm_host *pltfm_host;
struct sdhci_am654_data *sdhci_am654;
const struct of_device_id *match;
@ -598,6 +613,12 @@ static int sdhci_am654_probe(struct platform_device *pdev)
match = of_match_node(sdhci_am654_of_match, pdev->dev.of_node);
drvdata = match->data;
/* Update drvdata based on SoC revision */
soc = soc_device_match(sdhci_am654_devices);
if (soc && soc->data)
drvdata = soc->data;
host = sdhci_pltfm_init(pdev, drvdata->pdata, sizeof(*sdhci_am654));
if (IS_ERR(host))
return PTR_ERR(host);