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mmc: sdhci_am654: Add flag for PHY calibration

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Not all controllers need calibration for the PHY DLL. Add a DLL_CALIB flag
to indicate the same.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200619125801.9530-3-faiz_abbas@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Faiz Abbas 2020-06-19 18:27:56 +05:30 committed by Ulf Hansson
parent b1f85c8f2f
commit 23514731f4
1 changed files with 5 additions and 3 deletions
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8
drivers/mmc/host/sdhci_am654.c
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@ -97,6 +97,7 @@ struct sdhci_am654_driver_data {
#define FREQSEL_2_BIT (1 << 1) #define FREQSEL_2_BIT (1 << 1)
#define STRBSEL_4_BIT (1 << 2) #define STRBSEL_4_BIT (1 << 2)
#define DLL_PRESENT (1 << 3) #define DLL_PRESENT (1 << 3)
#define DLL_CALIB (1 << 4)
}; };
struct timing_data { struct timing_data {
@ -325,7 +326,8 @@ static const struct sdhci_pltfm_data sdhci_am654_pdata = {
static const struct sdhci_am654_driver_data sdhci_am654_drvdata = { static const struct sdhci_am654_driver_data sdhci_am654_drvdata = {
.pdata = &sdhci_am654_pdata, .pdata = &sdhci_am654_pdata,
.flags = IOMUX_PRESENT | FREQSEL_2_BIT | STRBSEL_4_BIT | DLL_PRESENT, .flags = IOMUX_PRESENT | FREQSEL_2_BIT | STRBSEL_4_BIT | DLL_PRESENT |
DLL_CALIB,
}; };
static struct sdhci_ops sdhci_j721e_8bit_ops = { static struct sdhci_ops sdhci_j721e_8bit_ops = {
@ -348,7 +350,7 @@ static const struct sdhci_pltfm_data sdhci_j721e_8bit_pdata = {
static const struct sdhci_am654_driver_data sdhci_j721e_8bit_drvdata = { static const struct sdhci_am654_driver_data sdhci_j721e_8bit_drvdata = {
.pdata = &sdhci_j721e_8bit_pdata, .pdata = &sdhci_j721e_8bit_pdata,
.flags = DLL_PRESENT, .flags = DLL_PRESENT | DLL_CALIB,
}; };
static struct sdhci_ops sdhci_j721e_4bit_ops = { static struct sdhci_ops sdhci_j721e_4bit_ops = {
@ -469,7 +471,7 @@ static int sdhci_am654_init(struct sdhci_host *host)
mask = OTAPDLYENA_MASK | OTAPDLYSEL_MASK; mask = OTAPDLYENA_MASK | OTAPDLYSEL_MASK;
regmap_update_bits(sdhci_am654->base, PHY_CTRL4, mask, 0x0); regmap_update_bits(sdhci_am654->base, PHY_CTRL4, mask, 0x0);
if (sdhci_am654->flags & DLL_PRESENT) { if (sdhci_am654->flags & DLL_CALIB) {
regmap_read(sdhci_am654->base, PHY_STAT1, &val); regmap_read(sdhci_am654->base, PHY_STAT1, &val);
if (~val & CALDONE_MASK) { if (~val & CALDONE_MASK) {
/* Calibrate IO lines */ /* Calibrate IO lines */