Hi
I'm using dm3730 beagleboard xm rowboat android2.3.4-dsp.
when i use spidev to test my spi,i found the differnce of spi1 and spi3
spi1 could recive the correct datas but spi3 recive zero.
in uboot
/*MCSPI3 */\
MUX_VAL(CP(ETK_D0_ES2), (IDIS | PTD | DIS | M1)) /*MCSPI3_SIMO*/\
MUX_VAL(CP(ETK_D1_ES2), (IEN | PTD | DIS | M1)) /*MCSPI3_SOMI*/\
MUX_VAL(CP(ETK_D2_ES2), (IDIS | PTD | DIS | M1)) /*MCSPI3_CS0*/\
MUX_VAL(CP(ETK_D3_ES2), (IEN | PTD | DIS | M1)) /*MCSPI3_CLK*/\
MUX_VAL(CP(ETK_D7_ES2), (IDIS | PTD | DIS | M1)) /*MCSPI3_CS1*/\
/*MCSPI1*/\
MUX_VAL(CP(MCSPI1_CLK), (IEN | PTD | DIS | M0)) /*McSPI1_CLK*/\
MUX_VAL(CP(MCSPI1_SIMO), (IDIS | PTD | DIS | M0)) /*McSPI1_SIMO */\
MUX_VAL(CP(MCSPI1_SOMI), (IEN | PTD | DIS | M0)) /*McSPI1_SOMI */\
MUX_VAL(CP(MCSPI1_CS0), (IDIS | PTD | DIS | M0)) /*McSPI1_CS0*/\
in kernel
static struct spi_board_info spidev3_board_info[] = {
[0] = {
.modalias = "spidev",
.mode = SPI_MODE_3,
.bus_num = 3,
.chip_select = 0,
.max_speed_hz = 1500000,
//.controller_data = &ads7846_mcspi_config,
.irq = -1,
//.platform_data = &ads7846_config,
},
};
static struct spi_board_info spidev1_board_info[] = {
[0] = {
.modalias = "spidev",
.mode = SPI_MODE_3,
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 1500000,
//.controller_data = &ads7846_mcspi_config,
.irq = -1,
//.platform_data = &ads7846_config,
},
};
what are the differences of spi1 and spi3 in rowboat android 2.3.4? and how can i resolve the problem?
