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| author | Ingo Molnar <mingo@kernel.org> | 2023-02-23 11:16:39 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-02-23 11:16:39 +0300 |
| commit | 585a78c1f77be305b1f6adad392f16047fb66ffd (patch) | |
| tree | 765143b487d582832c7695c9fbcae141c35baa4c /drivers/mmc/host/jz4740_mmc.c | |
| parent | 37064583f63eca93c98a9cdf2360485ea05f617a (diff) | |
| parent | 69308402ca6f5b80a5a090ade0b13bd146891420 (diff) | |
| download | linux-585a78c1f77be305b1f6adad392f16047fb66ffd.tar.xz | |
Merge branch 'linus' into objtool/core, to pick up Xen dependencies
Pick up dependencies - freshly merged upstream via xen-next - before applying
dependent objtool changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/mmc/host/jz4740_mmc.c')
| -rw-r--r-- | drivers/mmc/host/jz4740_mmc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index dc2db9c185ea..eda1e2ddcaca 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -1053,6 +1053,16 @@ static int jz4740_mmc_probe(struct platform_device* pdev) mmc->ops = &jz4740_mmc_ops; if (!mmc->f_max) mmc->f_max = JZ_MMC_CLK_RATE; + + /* + * There seems to be a problem with this driver on the JZ4760 and + * JZ4760B SoCs. There, when using the maximum rate supported (50 MHz), + * the communication fails with many SD cards. + * Until this bug is sorted out, limit the maximum rate to 24 MHz. + */ + if (host->version == JZ_MMC_JZ4760 && mmc->f_max > JZ_MMC_CLK_RATE) + mmc->f_max = JZ_MMC_CLK_RATE; + mmc->f_min = mmc->f_max / 128; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; |