diff options
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index b1888c32b6b6..f4f277b27b96 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -75,6 +75,7 @@ #define CORE_VENDOR_SPEC_CAPABILITIES0 0x11c +#define INVALID_TUNING_PHASE -1 #define SDHCI_MSM_MIN_CLOCK 400000 #define CORE_FREQ_100MHZ (100 * 1000 * 1000) @@ -97,6 +98,7 @@ struct sdhci_msm_host { bool use_14lpp_dll_reset; bool tuning_done; bool calibration_done; + u8 saved_tuning_phase; }; /* Platform specific tuning */ @@ -136,6 +138,9 @@ static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase) u32 config; struct mmc_host *mmc = host->mmc; + if (phase > 0xf) + return -EINVAL; + spin_lock_irqsave(&host->lock, flags); config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG); @@ -429,6 +434,8 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) int rc; struct mmc_host *mmc = host->mmc; struct mmc_ios ios = host->mmc->ios; + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host); /* * Tuning is required for SDR104, HS200 and HS400 cards and @@ -453,6 +460,7 @@ retry: if (rc) return rc; + msm_host->saved_tuning_phase = phase; rc = mmc_send_tuning(mmc, opcode, NULL); if (!rc) { /* Tuning is successful at this tuning point */ @@ -799,6 +807,8 @@ static int sdhci_msm_probe(struct platform_device *pdev) sdhci_get_of_property(pdev); + msm_host->saved_tuning_phase = INVALID_TUNING_PHASE; + /* Setup SDCC bus voter clock. */ msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus"); if (!IS_ERR(msm_host->bus_clk)) { |