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0ddf03c95b
In order to make it possible to reduce the SD bus frequency, parse the optional "max-frequency" attribute as documented in devicetree/bindings/mmc/mmc.txt Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2
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* of the License.
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*/
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#ifndef __ASM_ARCH_IMX_ESDHC_H
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#define __ASM_ARCH_IMX_ESDHC_H
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enum wp_types {
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ESDHC_WP_NONE, /* no WP, neither controller nor gpio */
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ESDHC_WP_CONTROLLER, /* mmc controller internal WP */
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ESDHC_WP_GPIO, /* external gpio pin for WP */
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};
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enum cd_types {
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ESDHC_CD_NONE, /* no CD, neither controller nor gpio */
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ESDHC_CD_CONTROLLER, /* mmc controller internal CD */
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ESDHC_CD_GPIO, /* external gpio pin for CD */
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ESDHC_CD_PERMANENT, /* no CD, card permanently wired to host */
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};
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/**
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* struct esdhc_platform_data - platform data for esdhc on i.MX
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*
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* ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
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*
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* @wp_gpio: gpio for write_protect
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* @cd_gpio: gpio for card_detect interrupt
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* @wp_type: type of write_protect method (see wp_types enum above)
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* @cd_type: type of card_detect method (see cd_types enum above)
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*/
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struct esdhc_platform_data {
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unsigned int wp_gpio;
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unsigned int cd_gpio;
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enum wp_types wp_type;
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enum cd_types cd_type;
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int max_bus_width;
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unsigned int f_max;
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};
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#endif /* __ASM_ARCH_IMX_ESDHC_H */
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