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| author |   Chen-Yu Tsai <wens@csie.org> | 2017-07-24 21:59:01 +0800 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2017-08-30 14:01:49 +0200 |
| commit | ac98caefe18ab845f4cef6612209212c669008ce (patch) | |
| tree | a0effb9857b4b1bde21ef9a2eea3b832c48b4ef3 /drivers/mmc/host/sunxi-mmc.c | |
| parent | mmc: sunxi: Support MMC DDR52 transfer mode with new timing mode (diff) | |
| download | linux-dev-ac98caefe18ab845f4cef6612209212c669008ce.tar.xz linux-dev-ac98caefe18ab845f4cef6612209212c669008ce.zip | |
mmc: sunxi: Add support for A83T eMMC (MMC2)
The third MMC controller (MMC2) on the Allwinner A83T SoC is slightly
different. It supports a wider 8-bit bus, has a dedicated controllable
reset pin for eMMC, and a "new timing mode" which is supposed to deliver
better signals and thus better performance.
Add a compatible for this one to use the new timing mode not found in the
other controllers.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sunxi-mmc.c')
| -rw-r--r-- | drivers/mmc/host/sunxi-mmc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index 4ea11415996d..3777517982dd 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -1117,6 +1117,13 @@ static const struct sunxi_mmc_cfg sun7i_a20_cfg = { .can_calibrate = false, }; +static const struct sunxi_mmc_cfg sun8i_a83t_emmc_cfg = { + .idma_des_size_bits = 16, + .clk_delays = sunxi_mmc_clk_delays, + .can_calibrate = false, + .has_timings_switch = true, +}; + static const struct sunxi_mmc_cfg sun9i_a80_cfg = { .idma_des_size_bits = 16, .clk_delays = sun9i_mmc_clk_delays, @@ -1141,6 +1148,7 @@ static const struct of_device_id sunxi_mmc_of_match[] = { { .compatible = "allwinner,sun4i-a10-mmc", .data = &sun4i_a10_cfg }, { .compatible = "allwinner,sun5i-a13-mmc", .data = &sun5i_a13_cfg }, { .compatible = "allwinner,sun7i-a20-mmc", .data = &sun7i_a20_cfg }, + { .compatible = "allwinner,sun8i-a83t-emmc", .data = &sun8i_a83t_emmc_cfg }, { .compatible = "allwinner,sun9i-a80-mmc", .data = &sun9i_a80_cfg }, { .compatible = "allwinner,sun50i-a64-mmc", .data = &sun50i_a64_cfg }, { .compatible = "allwinner,sun50i-a64-emmc", .data = &sun50i_a64_emmc_cfg }, |