diff options
| author | Eugen Hristev <eugen.hristev@microchip.com> | 2020-11-09 14:02:17 +0300 |
|---|---|---|
| committer | Eugen Hristev <eugen.hristev@microchip.com> | 2020-11-26 11:12:47 +0300 |
| commit | 7eace38d5418a6330f6d0918ed319ff605d3020b (patch) | |
| tree | 6ac3ee06f703b25e7c4391641a07c86e532cdf5d /drivers/mmc/atmel_sdhci.c | |
| parent | 1ae955e3a58f46918ef99b0b6c562967ba1bf39e (diff) | |
| download | u-boot-7eace38d5418a6330f6d0918ed319ff605d3020b.tar.xz | |
mmc: atmel-sdhci: fix the clk_enable call in case of no ops
If the clock driver does not offer a clk_enable ops, then the system will
return -ENOSYS.
The clk_enable works with CCF (common clock framework).
Some clocks in some cases (like the generic clock for some products: sama5d2)
do not have the clk_enable primitive, and in this case probing of the driver
will fail.
This patch changes the behavior to return an error in case there is really
an error, and not a missing primitive.
If the clock driver does not have an enable primitive, most likely clocks
are always enabled or enabled in the set_rate primitives.
Fixes: 81f16438d4 ("mmc: atmel-sdhci: enable the required generic clock")
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc/atmel_sdhci.c')
| -rw-r--r-- | drivers/mmc/atmel_sdhci.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/atmel_sdhci.c b/drivers/mmc/atmel_sdhci.c index f56ae63bc2..ca7a98bf1d 100644 --- a/drivers/mmc/atmel_sdhci.c +++ b/drivers/mmc/atmel_sdhci.c @@ -86,7 +86,8 @@ static int atmel_sdhci_probe(struct udevice *dev) return -EINVAL; ret = clk_enable(&clk); - if (ret) + /* return error only if the clock really has a clock enable func */ + if (ret && ret != -ENOSYS) return ret; ret = mmc_of_parse(dev, &plat->cfg); |