Hi All,
Finally we got UART1 / UART2 working on DM6467 :)
Step#1
Make menuconfig and put no of uart to 3
( Device Drivers
->Character Devices
->Serial Drivers
->Maximum number of non-legacy 8250/16550 serial ports
Set this to 3 )
Step#2
To enable UART2 and UART1
Disable Consumer IR and TSIF module from Menuconfig
( Device Drivers
->Character Devices
-> DM646x Consumer IR Driver ( Remove it )
-> DM646x Transport Stream Interface Support ( Remove it )
Step#3
Add follow code snippest to your
<ti-davinci-kernel>/arch/arm/mach-davinci/board-dm6467.c file
( Modify board_init function with the following code )
static void board_init(void)
{
volatile int *ptr_pgmgt,*ptr_ier;
int del = 0;
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_VLYNQ, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_HDVICP0, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_HDVICP1, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_SPI, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_TPCC, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_TPTC0, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_TPTC1, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_TPTC2, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_TPTC3, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_AEMIF, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_DM646X_LPSC_GPIO, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_TIMER2, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_UART1, 1);
board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_UART2, 1);
#define PINMUX0REG __REG(PINMUX0)
#define PINMUX1REG __REG(PINMUX1)
#define VDD3P3V_PWDN __REG(0x01C40048)
VDD3P3V_PWDN = 0;
PINMUX0REG &= ~(0x1FFFF);
PINMUX0REG = 0x40000;
PINMUX1REG = 0x15;
ptr_ier = (volatile int *)IO_ADDRESS(DAVINCI_UART1_BASE+0x4);
*ptr_ier = 0x0; //disable int
ptr_pgmgt = (volatile int *) IO_ADDRESS(DAVINCI_UART1_BASE+0x20);
*ptr_pgmgt = 0x00;
ptr_ier = (volatile int *)IO_ADDRESS(DM644X_UART2_BASE+0x4);
*ptr_ier = 0x0; //disable int
ptr_pgmgt = (volatile int *) IO_ADDRESS(DM644X_UART2_BASE+0x20);
*ptr_pgmgt = 0x00;
davinci_serial_init(&serial_device);
davinci_clk_init();
}
Step #4 Make uImage
Have your UART1 / UART2 working without flow control :)
Thanks,
Deepika
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