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mmc: sdhci-esdhc-imx: change pinctrl state according to uhs mode

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Without proper pinctrl state, the card may not be able to work
on high speed stablely. e.g. SDR104.

This patch add pinctrl state switch code according to different
uhs mode include 100mhz sate, 200mhz sate and normal state
(50Mhz and below).

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Dong Aisheng
2013-09-13 19:11:35 +08:00
committed by Chris Ball
parent 0322191e62
commit ad93220de7
2 changed files with 99 additions and 1 deletions
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4
include/linux/platform_data/mmc-esdhc-imx.h
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@@ -10,6 +10,8 @@
#ifndef __ASM_ARCH_IMX_ESDHC_H
#define __ASM_ARCH_IMX_ESDHC_H
#include <linux/types.h>
enum wp_types {
ESDHC_WP_NONE, /* no WP, neither controller nor gpio */
ESDHC_WP_CONTROLLER, /* mmc controller internal WP */
@@ -32,6 +34,7 @@ enum cd_types {
* @cd_gpio: gpio for card_detect interrupt
* @wp_type: type of write_protect method (see wp_types enum above)
* @cd_type: type of card_detect method (see cd_types enum above)
* @support_vsel: indicate it supports 1.8v switching
*/
struct esdhc_platform_data {
@@ -41,5 +44,6 @@ struct esdhc_platform_data {
enum cd_types cd_type;
int max_bus_width;
unsigned int f_max;
bool support_vsel;
};
#endif /* __ASM_ARCH_IMX_ESDHC_H */