Add support to execute platform/board specific tuning needed for SDR104 and SDR50 UHS modes.This patch adds hook routine to support specific tuning requirements.
Signed-off-by: Siva Durga Prasad Paladugu sivadur@xilinx.com --- Changes from v1: - None --- drivers/mmc/sdhci.c | 8 ++++++++ include/sdhci.h | 1 + 2 files changed, 9 insertions(+)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index bba2c30..a24cc15 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -309,11 +309,19 @@ static int sdhci_execute_tuning(struct mmc *mmc, u8 opcode) struct mmc_cmd cmd; struct mmc_data data; u32 ctrl; + int err; u8 tuning_loop_counter = 40; struct sdhci_host *host = mmc->priv;
debug("%s\n", __func__);
+ if (host->ops->platform_execute_tuning) { + err = host->ops->platform_execute_tuning(mmc, opcode); + if (err) + return err; + return 0; + } + ctrl = sdhci_readw(host, SDHCI_HOST_CTRL2); ctrl |= SDHCI_CTRL_EXEC_TUNING; sdhci_writew(host, ctrl, SDHCI_HOST_CTRL2); diff --git a/include/sdhci.h b/include/sdhci.h index fc0708c..dbe3836 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -250,6 +250,7 @@ struct sdhci_ops { void (*set_control_reg)(struct sdhci_host *host); void (*set_ios_post)(struct sdhci_host *host); void (*set_clock)(struct sdhci_host *host, u32 div); + int (*platform_execute_tuning)(struct mmc *host, u8 opcode); };
struct sdhci_host {