diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-01-27 22:38:36 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-02-13 13:20:50 +0100 |
| commit | 9a37e53e451eff5790ae15341031e39777105127 (patch) | |
| tree | 8e733706c8120feb0c7109f8f068186e4938bee0 /drivers/mmc | |
| parent | 860fdf89b92e740b19d1160406df98e5302a9300 (diff) | |
| download | linux-9a37e53e451eff5790ae15341031e39777105127.tar.bz2 | |
mmc: sunxi: Enable the new timings for the A64 MMC controllers
The A64 MMC controllers need to set a "new timings" bit when a new rate is
set.
The actual meaning of that bit is not clear yet, but not setting it leads
to some corner-case issues, like the CMD53 failing, which is used to
implement SDIO packet aggregation.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Florian Vaussard <florian.vaussard@heig-vd.ch>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sunxi-mmc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index b9c8a62bc212..51d6388a194e 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -253,6 +253,8 @@ struct sunxi_mmc_cfg { /* does the IP block support autocalibration? */ bool can_calibrate; + + bool needs_new_timings; }; struct sunxi_mmc_host { @@ -779,6 +781,9 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host, } mmc_writel(host, REG_CLKCR, rval); + if (host->cfg->needs_new_timings) + mmc_writel(host, REG_SD_NTSR, SDXC_2X_TIMING_MODE); + ret = sunxi_mmc_clk_set_phase(host, ios, rate); if (ret) return ret; @@ -1076,6 +1081,7 @@ static const struct sunxi_mmc_cfg sun50i_a64_cfg = { .idma_des_size_bits = 16, .clk_delays = NULL, .can_calibrate = true, + .needs_new_timings = true, }; static const struct of_device_id sunxi_mmc_of_match[] = { |