diff options
| author | Ashok Reddy Soma <ashok.reddy.soma@amd.com> | 2023-01-10 04:31:22 -0700 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2023-01-31 22:02:27 +0900 |
| commit | 6f5bb9913ca54fe0a3e45f83458eb71103e22ef7 (patch) | |
| tree | 9216df43a3a65305500a7a53db02b07d75c6108d | |
| parent | 14ef4c7be5b5881e2c50642ae15f0f12c28fdf60 (diff) | |
mmc: sdhci: Check and call config_dll callback functions
Check if the low level driver supports config_dll callback function and
call it if it does. Call with dll disable before calling set_clock and
with dll enable after it.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
| -rw-r--r-- | drivers/mmc/sdhci.c | 16 | ||||
| -rw-r--r-- | include/sdhci.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index a80ad8329a3..181ab9b7cb2 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -396,6 +396,14 @@ int sdhci_set_clock(struct mmc *mmc, unsigned int clock) } } + if (host->ops && host->ops->config_dll) { + ret = host->ops->config_dll(host, clock, false); + if (ret) { + printf("%s: Error while configuring dll\n", __func__); + return ret; + } + } + if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { /* * Check if the Host Controller supports Programmable Clock @@ -439,6 +447,14 @@ int sdhci_set_clock(struct mmc *mmc, unsigned int clock) if (host->ops && host->ops->set_clock) host->ops->set_clock(host, div); + if (host->ops && host->ops->config_dll) { + ret = host->ops->config_dll(host, clock, true); + if (ret) { + printf("%s: Error while configuring dll\n", __func__); + return ret; + } + } + clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) << SDHCI_DIVIDER_HI_SHIFT; diff --git a/include/sdhci.h b/include/sdhci.h index 24b4599b857..64a3d309da5 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -272,6 +272,8 @@ struct sdhci_ops { void (*set_clock)(struct sdhci_host *host, u32 div); int (*platform_execute_tuning)(struct mmc *host, u8 opcode); int (*set_delay)(struct sdhci_host *host); + /* Callback function to set DLL clock configuration */ + int (*config_dll)(struct sdhci_host *host, u32 clock, bool enable); int (*deferred_probe)(struct sdhci_host *host); /** |