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exynos5: pinmux: check flag for i2c config

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Some versions of Exynos5 supports High-Speed I2C,
on few interfaces, this change allows support this.
The new flag is: PINMUX_FLAG_HS_MODE

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Akshay Saraswat <akshay.s@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Przemyslaw Marczak 2015-01-27 13:36:34 +01:00 committed by Simon Glass
parent 232a02cf01
commit fda0e27bfd
2 changed files with 22 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
arch/arm/cpu/armv7/exynos/pinmux.c
View File

@ -266,22 +266,33 @@ static void exynos5_sromc_config(int flags)
static void exynos5_i2c_config(int peripheral, int flags)
{
int func01, func23;
/* High-Speed I2C */
if (flags & PINMUX_FLAG_HS_MODE) {
func01 = 4;
func23 = 4;
} else {
func01 = 2;
func23 = 3;
}
switch (peripheral) {
case PERIPH_ID_I2C0:
gpio_cfg_pin(EXYNOS5_GPIO_B30, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5_GPIO_B31, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5_GPIO_B30, S5P_GPIO_FUNC(func01));
gpio_cfg_pin(EXYNOS5_GPIO_B31, S5P_GPIO_FUNC(func01));
break;
case PERIPH_ID_I2C1:
gpio_cfg_pin(EXYNOS5_GPIO_B32, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5_GPIO_B33, S5P_GPIO_FUNC(0x2));
gpio_cfg_pin(EXYNOS5_GPIO_B32, S5P_GPIO_FUNC(func01));
gpio_cfg_pin(EXYNOS5_GPIO_B33, S5P_GPIO_FUNC(func01));
break;
case PERIPH_ID_I2C2:
gpio_cfg_pin(EXYNOS5_GPIO_A06, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_A07, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_A06, S5P_GPIO_FUNC(func23));
gpio_cfg_pin(EXYNOS5_GPIO_A07, S5P_GPIO_FUNC(func23));
break;
case PERIPH_ID_I2C3:
gpio_cfg_pin(EXYNOS5_GPIO_A12, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_A13, S5P_GPIO_FUNC(0x3));
gpio_cfg_pin(EXYNOS5_GPIO_A12, S5P_GPIO_FUNC(func23));
gpio_cfg_pin(EXYNOS5_GPIO_A13, S5P_GPIO_FUNC(func23));
break;
case PERIPH_ID_I2C4:
gpio_cfg_pin(EXYNOS5_GPIO_A20, S5P_GPIO_FUNC(0x3));

3
arch/arm/include/asm/arch-exynos/pinmux.h
View File

@ -23,6 +23,9 @@ enum {
/* Flags for SROM controller */
PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */
PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */
/* Flags for I2C */
PINMUX_FLAG_HS_MODE = 1 << 1, /* I2C High Speed Mode */
};
/**