[PATCH v5 6/13] mmc: sunxi: Add EMMC (MMC2) controller compatible
From: Maxime Ripard <hidden>
Date: 2017-01-27 21:54:22
Also in:
linux-devicetree, linux-mmc, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Ulf Hansson, Linus Torvalds
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 <redacted> Tested-by: Florian Vaussard <redacted> --- 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@o2s.ch> * (C) Copyright 2013-2014 Hans de Goede <hdegoede@redhat.com> + * (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);
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