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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2021-06-07 12:44:03 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-06-10 15:16:12 +0200 |
| commit | 6fb9b51fcaa302e935a31b7fce269589427b7aa0 (patch) | |
| tree | ae15d3813e085fb6af5646e300f214ab4a558043 /include/mci.h | |
| parent | a3900f221692606410d404a9a48ed7b86ab38908 (diff) | |
| download | barebox-6fb9b51fcaa302e935a31b7fce269589427b7aa0.tar.gz barebox-6fb9b51fcaa302e935a31b7fce269589427b7aa0.tar.xz | |
mci: sdhci: port over some common functions from Linux
This adds some functions useful for SDHCI drivers from Linux:
sdhci_calc_clk()
sdhci_set_clock()
sdhci_enable_clk()
sdhci_read_caps()
sdhci_set_bus_width()
These functions can be used to further unify our different SDHCI
drivers. All the new functions assume the also newly introduced
sdhci_setup_host() has been called before using them.
The functions are moslty the same as their Linux pendants, only
sdhci_calc_clk() takes an addional clock rate argument where Linux
uses host->max_clk. This is not suitable for the upcoming Rockchip
driver which needs to adjust the input clock using clk_set_rate(),
so fixed host->max_clk is not accurate for this driver.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20210607104411.23071-5-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/mci.h')
| -rw-r--r-- | include/mci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/mci.h b/include/mci.h index 5e6805e8dc..df2437f618 100644 --- a/include/mci.h +++ b/include/mci.h @@ -365,6 +365,8 @@ enum mci_timing { MMC_TIMING_UHS_SDR104 = 4, MMC_TIMING_UHS_DDR50 = 5, MMC_TIMING_MMC_HS200 = 6, + MMC_TIMING_MMC_DDR52 = 7, + MMC_TIMING_MMC_HS400 = 8, }; struct mci_ios { |