Hi, all
I am using TI platform for AM335x, with am3359 bring up Board, download SDK from the following URL
http://software-dl.ti.com/sitara_linux/esd/AM335xSDK/06_00_00_00/index_FDS.html
I have tried SPI0 for my bring up board, it worked, could measure waveform from oscilloscope, could control by uboot shell.
U-Boot# help sspi
sspi - SPI utility command
Usage:
sspi [<bus>:]<cs>[.<mode>] <bit_len> <dout> - Send and receive bits
<bus> - Identifies the SPI bus
<cs> - Identifies the chip select
<mode> - Identifies the SPI mode to use
<bit_len> - Number of bits to send (base 10)
<dout> - Hexadecimal string that gets sent
U-Boot# sspi 0 32 1a
FFFFFFFF
Now i am going to enable spi1 for my bring up board, the following is my code in mux.c
static struct module_pin_mux spi1_pin_mux[] = {
{OFFSET(mcasp0_aclkx), (MODE(2) | RXACTIVE | PULLUDEN)}, /* SPI1_SCLK */
{OFFSET(mcasp0_fsx), (MODE(2) | RXACTIVE | PULLUDEN | PULLUP_EN)}, /* SPI1_D0 */
{OFFSET(mcasp0_axr0), (MODE(2) | RXACTIVE | PULLUDEN)}, /* SPI1_D1 */
{OFFSET(mcasp0_ahclkr), (MODE(3) | RXACTIVE | PULLUDEN | PULLUP_EN)}, /* SPI1_CS0 */
{-1},
};
void enable_board_pin_mux(struct am335x_baseboard_id *header){
configure_module_pin_mux(spi0_pin_mux);//SPI0
configure_module_pin_mux(spi1_pin_mux);//SPI1
}
After I add the above code , rebuild it and program, using the memory browser to look for SPI1 register, it seems that the SPI1 register enable fail. Does anyone know how to solve this issue?
