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mmc: sdhci-cadence: Use hardware version field for Cadence SDHCI controller

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Replace device tree compatible string checks with hardware version field
detection to determine SDHCI controller capabilities. This approach is
more robust and aligns with standard SDHCI specification practices.
Controllers with SDHCI version 4.2 and above will automatically use the
enhanced PHY adjustment, and tuning v6-specific procedures.

Signed-off-by: Tanmay Kathpalia <tanmay.kathpalia@altera.com>
Reviewed-by: Balsundar Ponnusamy <balsundar.ponnusamy@altera.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Tanmay Kathpalia
2025-12-03 04:21:36 -08:00
committed by Peng Fan
parent 90f43c7edc
commit 7d52b66b9b
1 changed files with 4 additions and 2 deletions
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6
drivers/mmc/sdhci-cadence.c
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@@ -151,7 +151,7 @@ static void sdhci_cdns_set_control_reg(struct sdhci_host *host)
if (IS_SD(mmc))
sdhci_set_control_reg(host);
if (device_is_compatible(mmc->dev, "cdns,sd6hc"))
if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_420)
sdhci_cdns6_phy_adj(mmc->dev, plat, mmc->selected_mode);
}
@@ -162,11 +162,13 @@ static const struct sdhci_ops sdhci_cdns_ops = {
static int sdhci_cdns_set_tune_val(struct sdhci_cdns_plat *plat,
unsigned int val)
{
struct mmc *mmc = &plat->mmc;
struct sdhci_host *host = dev_get_priv(mmc->dev);
void __iomem *reg = plat->hrs_addr + SDHCI_CDNS_HRS06;
u32 tmp;
int i, ret;
if (device_is_compatible(plat->mmc.dev, "cdns,sd6hc"))
if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_420)
return sdhci_cdns6_set_tune_val(plat, val);
if (WARN_ON(!FIELD_FIT(SDHCI_CDNS_HRS06_TUNE, val)))