diff options
| author | Judith Mendez <jm@ti.com> | 2024-09-04 18:25:12 -0500 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2024-09-05 12:17:25 +0200 |
| commit | cf6444ba528f043398b112ac36e041a4d8685cb1 (patch) | |
| tree | 2164f37e7571d9f51b6186631050470ba33b8ac8 /drivers/mmc/host | |
| parent | 901d16e462963cb0d824144be7448505b15ff4d6 (diff) | |
mmc: sdhci_am654: Add prints to tuning algorithm
Add debug prints to tuning algorithm for debugging.
Also add error print if we fail tuning.
Signed-off-by: Judith Mendez <jm@ti.com>
Link: https://lore.kernel.org/r/20240904232512.830778-3-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci_am654.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index 8eb6ce9f3b17..0aa3c40ea6ed 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -450,17 +450,20 @@ static int sdhci_am654_calculate_itap(struct sdhci_host *host, struct window { u8 itap = 0, start_fail = 0, end_fail = 0, pass_length = 0; u8 first_fail_start = 0, last_fail_end = 0; + struct device *dev = mmc_dev(host->mmc); struct window pass_window = {0, 0, 0}; int prev_fail_end = -1; u8 i; if (!num_fails) { /* Retry tuning */ + dev_dbg(dev, "No failing region found, retry tuning\n"); return -1; } if (fail_window->length == ITAPDLY_LENGTH) { /* Retry tuning */ + dev_dbg(dev, "No passing itapdly, retry tuning\n"); return -1; } @@ -504,6 +507,7 @@ static int sdhci_am654_do_tuning(struct sdhci_host *host, struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host); unsigned char timing = host->mmc->ios.timing; struct window fail_window[ITAPDLY_LENGTH]; + struct device *dev = mmc_dev(host->mmc); u8 curr_pass, itap; u8 fail_index = 0; u8 prev_pass = 1; @@ -524,6 +528,7 @@ static int sdhci_am654_do_tuning(struct sdhci_host *host, if (!curr_pass) { fail_window[fail_index].end = itap; fail_window[fail_index].length++; + dev_dbg(dev, "Failed itapdly=%d\n", itap); } if (curr_pass && !prev_pass) @@ -545,6 +550,7 @@ static int sdhci_am654_platform_execute_tuning(struct sdhci_host *host, struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host); unsigned char timing = host->mmc->ios.timing; + struct device *dev = mmc_dev(host->mmc); int itapdly; do { @@ -553,9 +559,12 @@ static int sdhci_am654_platform_execute_tuning(struct sdhci_host *host, break; } while (++sdhci_am654->tuning_loop < RETRY_TUNING_MAX); - if (itapdly < 0) + if (itapdly < 0) { + dev_err(dev, "Failed to find itapdly, fail tuning\n"); return -1; + } + dev_dbg(dev, "Passed tuning, final itapdly=%d\n", itapdly); sdhci_am654_write_itapdly(sdhci_am654, itapdly, sdhci_am654->itap_del_ena[timing]); /* Save ITAPDLY */ sdhci_am654->itap_del_sel[timing] = itapdly; |