Hi everyone,
I try to enable the spi, and I configured the file that allow to enbale the spi for my board (mars board) 'board-mx6q_marsboard.c',spidev is loaded ( verified with lsmod ) and I can find the spidepv2.0 in the /dev folder, but I have no signal on the clk and the MOSI, when I try to use it with ( echo 121 >/dev/spidev2.0 )
this is the modification that I have made in the file '~/linux-imx/arch/arm/mach-mx6
/board-mx6q_marsboard.c' to enable the spi :
/*****************************************************/
/* ECSPI3*/
MX6Q_PAD_DISP0_DAT2__ECSPI3_MISO,
MX6Q_PAD_DISP0_DAT1__ECSPI3_MOSI,
MX6Q_PAD_DISP0_DAT0__ECSPI3_SCLK,
MX6Q_PAD_DISP0_DAT4__GPIO_4_25,
/*****************************************************/
static int mx6q_marsboard_spi2_cs[] = {
MX6Q_MARSBOARD_ECSPI3_CS0,
};
static const struct spi_imx_master mx6q_marsboard_spi2_data __initconst = {
.chipselect = mx6q_marsboard_spi2_cs,
.num_chipselect = ARRAY_SIZE(mx6q_marsboard_spi2_cs),
};
/*****************************************************/
{
.modalias = "spidev",
.max_speed_hz = 20000000,
.bus_num = 2,
.chip_select = 0,
.mode =SPI_MODE_1,
.platform_data = &imx6_marsboard__spi_flash_data,
},
/*****************************************************/
Please help me,
