diff options
| author | Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com> | 2017-01-17 15:58:48 +0100 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2017-01-23 15:37:42 +0900 |
| commit | 6d0e34bf4e21596563e5f5950d097a2eab4c81a8 (patch) | |
| tree | d1d82e018cb8b85d7f0ddb102667b676fe891237 /drivers/mmc/atmel_sdhci.c | |
| parent | 0c9e85f67cd86d2d7a3424ea3ebff0e6db7a3915 (diff) | |
mmc: sdhci: Distinguish between base clock and maximum peripheral frequency
The sdhci controller assumes that the base clock frequency is fully supported by
the peripheral and doesn't support hardware limitations. The Linux kernel
distinguishes between base clock (max_clk) of the host controller and maximum
frequency (f_max) of the card interface. Use the same differentiation and allow
the platform to constrain the peripheral interface.
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Diffstat (limited to 'drivers/mmc/atmel_sdhci.c')
| -rw-r--r-- | drivers/mmc/atmel_sdhci.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/mmc/atmel_sdhci.c b/drivers/mmc/atmel_sdhci.c index 6654b54278..62cb242343 100644 --- a/drivers/mmc/atmel_sdhci.c +++ b/drivers/mmc/atmel_sdhci.c @@ -35,8 +35,9 @@ int atmel_sdhci_init(void *regbase, u32 id) free(host); return -ENODEV; } + host->max_clk = max_clk; - add_sdhci(host, max_clk, min_clk); + add_sdhci(host, 0, min_clk); return 0; } @@ -95,7 +96,9 @@ static int atmel_sdhci_probe(struct udevice *dev) if (!max_clk) return -EINVAL; - ret = sdhci_setup_cfg(&plat->cfg, host, max_clk, ATMEL_SDHC_MIN_FREQ); + host->max_clk = max_clk; + + ret = sdhci_setup_cfg(&plat->cfg, host, 0, ATMEL_SDHC_MIN_FREQ); if (ret) return ret; |