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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright 2010 Wolfram Sang <kernel@pengutronix.de>
4 */
5
6#ifndef __ASM_ARCH_IMX_ESDHC_H
7#define __ASM_ARCH_IMX_ESDHC_H
8
9#include <linux/types.h>
10
11enum wp_types {
12 ESDHC_WP_NONE, /* no WP, neither controller nor gpio */
13 ESDHC_WP_CONTROLLER, /* mmc controller internal WP */
14 ESDHC_WP_GPIO, /* external gpio pin for WP */
15};
16
17enum cd_types {
18 ESDHC_CD_NONE, /* no CD, neither controller nor gpio */
19 ESDHC_CD_CONTROLLER, /* mmc controller internal CD */
20 ESDHC_CD_GPIO, /* external gpio pin for CD */
21 ESDHC_CD_PERMANENT, /* no CD, card permanently wired to host */
22};
23
24/**
25 * struct esdhc_platform_data - platform data for esdhc on i.MX
26 *
27 * ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
28 *
29 * @wp_type: type of write_protect method (see wp_types enum above)
30 * @cd_type: type of card_detect method (see cd_types enum above)
31 */
32
33struct esdhc_platform_data {
34 enum wp_types wp_type;
35 enum cd_types cd_type;
36 int max_bus_width;
37 unsigned int delay_line;
38 unsigned int tuning_step; /* The delay cell steps in tuning procedure */
39 unsigned int tuning_start_tap; /* The start delay cell point in tuning procedure */
40 unsigned int strobe_dll_delay_target; /* The delay cell for strobe pad (read clock) */
41};
42#endif /* __ASM_ARCH_IMX_ESDHC_H */