Set the clock rate of the functional clock to the max frequency
that is passed to the driver either using pdata or dt.
Also remove unnecessary setting of host->fclk to NULL.
This is in preparation for supporting high frequency modes
of operation.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
Signed-off-by: Sekhar Nori <nsekhar@xxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 680934d50919..3ca18e28be01 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2153,22 +2153,29 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
mmc->ops = &omap_hsmmc_ops;
- mmc->f_min = OMAP_MMC_MIN_CLOCK;
-
- if (pdata->max_freq > 0)
- mmc->f_max = pdata->max_freq;
- else if (mmc->f_max == 0)
- mmc->f_max = OMAP_MMC_MAX_CLOCK;
-
spin_lock_init(&host->irq_lock);
host->fclk = devm_clk_get(&pdev->dev, "fck");
if (IS_ERR(host->fclk)) {
ret = PTR_ERR(host->fclk);
- host->fclk = NULL;
goto err1;
}
+ mmc->f_min = OMAP_MMC_MIN_CLOCK;
+ if (pdata->max_freq)
+ mmc->f_max = pdata->max_freq;
+
+ if (mmc->f_max) {
+ ret = clk_set_rate(host->fclk, mmc->f_max);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to set clock to %d\n",
+ mmc->f_max);
+ goto err1;
+ }
+ } else {
+ mmc->f_max = OMAP_MMC_MAX_CLOCK;
+ }
+
if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n");
omap_hsmmc_ops.multi_io_quirk = omap_hsmmc_multi_io_quirk;
--
2.11.0
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
