mmc: sdhci-pci-core: Disable ES for ASUS BIOS on Jasper Lake

Enhanced Strobe (ES) does not work correctly on the ASUS 1100 series of
devices. Jasper Lake eMMCs (pci_id 8086:4dc4) are supposed to support
ES. There are also two system families under the series, thus this is
being scoped to the ASUS BIOS.

The failing ES prevents the installer from writing to disk. Falling back
to HS400 without ES fixes the issue.

Signed-off-by: Patrick Thompson <ptf@google.com>
Fixes: 315e3bd7ac19 ("mmc: sdhci-pci: Add support for Intel JSL")
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221013210017.3751025-1-ptf@google.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 169b847..34ea1ac 100644 (file)
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -914,6 +914,12 @@ static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
                dmi_match(DMI_SYS_VENDOR, "IRBIS"));
 }
 
+static bool jsl_broken_hs400es(struct sdhci_pci_slot *slot)
+{
+       return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_JSL_EMMC &&
+                       dmi_match(DMI_BIOS_VENDOR, "ASUSTeK COMPUTER INC.");
+}
+
 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
 {
        int ret = byt_emmc_probe_slot(slot);
@@ -922,9 +928,11 @@ static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
                slot->host->mmc->caps2 |= MMC_CAP2_CQE;
 
        if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
-               slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES;
-               slot->host->mmc_host_ops.hs400_enhanced_strobe =
-                                               intel_hs400_enhanced_strobe;
+               if (!jsl_broken_hs400es(slot)) {
+                       slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES;
+                       slot->host->mmc_host_ops.hs400_enhanced_strobe =
+                                                       intel_hs400_enhanced_strobe;
+               }
                slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
        }