Add support for any platform/board specific delays requirement while setting clocks. Some boards needs to program tapdelay for setting certain high frequencies and this patch adds hook for supporting the same.
Signed-off-by: Siva Durga Prasad Paladugu sivadur@xilinx.com --- drivers/mmc/sdhci.c | 3 +++ include/sdhci.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 7b968d5..a2fcf18 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -407,6 +407,9 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock) if (clock == 0) return 0;
+ if (mmc->is_uhs && host->ops->set_delay) + host->ops->set_delay(host, mmc->uhsmode); + if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { /* * Check if the Host Controller supports Programmable Clock diff --git a/include/sdhci.h b/include/sdhci.h index ae19be6..54c2ea2 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_clock)(struct sdhci_host *host, u32 div); int (*platform_execute_tuning)(struct mmc *host, u8 opcode); + void (*set_delay)(struct sdhci_host *host, u8 uhsmode); };
struct sdhci_host {