Messages in this thread Patch in this message | | | From | Maxime Ripard <> | Subject | [PATCH v2 3/6] mmc: sunxi: Add EMMC (MMC2) controller compatible | Date | Mon, 9 Jan 2017 17:46:52 +0100 |
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The MMC2 controller on the A64 is kind of a special beast.
While the general controller design is the same than the other MMC controllers in the SoC, it also has a bunch of features and changes that prevent it to be driven in the same way.
It has for example a different bus width limit, a different maximum frequency, and, for some reason, the maximum buffer size of a DMA descriptor.
Add a new compatible specifically for this controller.
Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> --- drivers/mmc/host/sunxi-mmc.c | 7 +++++++ 1 file changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index 9a860bcac154..bdcc87c9d8b8 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -1081,12 +1081,19 @@ static const struct sunxi_mmc_cfg sun50i_a64_cfg = { .needs_new_timings = true, }; +static const struct sunxi_mmc_cfg sun50i_a64_emmc_cfg = { + .idma_des_size_bits = 13, + .clk_delays = NULL, + .can_calibrate = true, +}; + 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,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 }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); -- git-series 0.8.11
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