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@xxxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
Tested-by: Florian Vaussard <florian.vaussard@xxxxxxxxxx>
---
drivers/mmc/host/sunxi-mmc.c | 8 ++++++++
1 file changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 6bbe61397b7c..f0f6922bca8a 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -5,6 +5,7 @@
* (C) Copyright 2013-2014 O2S GmbH <www.o2s.ch>
* (C) Copyright 2013-2014 David Lanzend�rfer <david.lanzendoerfer@xxxxxx>
* (C) Copyright 2013-2014 Hans de Goede <hdegoede@xxxxxxxxxx>
+ * (C) Copyright 2017 Sootech SA
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -1096,12 +1097,19 @@ 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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