[U-Boot] PPC440EP UART 4port enble

[조기성 <k9@tibetsystem.com>]

Hi. 
We have designed a new PPC440EP yosemite based board.
But we are using UART 4port tx,rx( 2pin UART0, 1, 2, 3)
But current It only works 2port(UART0, UART1).
I read user manual then changed  u-boot's GPIO bit flag blows.
But it's now working, How can I do that?

Thanks in advance


int board_early_init_f(void)
{
	
...
	/*UART1 */
	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x02000000);
	out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x00080000);
	out32(GPIO1_ISR2L, in32(GPIO1_ISR2L) | 0x00010000)


#if 1 //kscho, UART2, 3(0 based UART) enable
	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x20000000); 
	out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x00080000)
	out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x00080000);
#else
	//gpio_config(34, GPIO_OUT, GPIO_ALT3, GPIO_OUT_1);
	//gpio_config(35, GPIO_OUT, GPIO_ALT3, GPIO_OUT_1);
	//gpio_config(36, GPIO_OUT, GPIO_ALT3, GPIO_OUT_1);

	printf("GPIO1_TCR 0x%lx\n", in32(GPIO1_TCR));
	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x24); /* 0010 01 */
	printf("### GPIO1_TCR 0x%lx\n", in32(GPIO1_TCR));
	//out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x820); /* 0000 0100  0001 */
	printf("GPIO1_OSRL 0x%lx\n", in32(GPIO1_OSRL));
	out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0xC30); /* 0000 1100 0011 */
	printf("### GPIO1_OSRL 0x%lx\n", in32(GPIO1_OSRL));
	printf("GPIO1_TSRL 0x%lx\n", in32(GPIO1_TSRL));
	out32(GPIO1_TSRL, in32(GPIO1_TSRL) & ~0x00000ff0); 
	printf("### GPIO1_TSRL 0x%lx\n", in32(GPIO1_TSRL));
	printf("GPIO1_ISR3L 0x%lx\n", in32(GPIO1_ISR3L));
	out32(GPIO1_ISR3L, in32(GPIO1_ISR3L) | 0x00000280); /* 0000 0001
0100 */
	printf("### GPIO1_ISR3L 0x%lx\n", in32(GPIO1_ISR3L));
#endi

...
	/*------------------------------------------------------------------
--
	 * Setup other serial configuration
	 *------------------------------------------------------------------
-*/
	mfsdr(sdr_pci0, reg);
	mtsdr(sdr_pci0, 0x80000000 | reg);	/* PCI arbiter enabled */
	mtsdr(sdr_pfc0, 0x00003e00);	/* Pin function */
	mtsdr(sdr_pfc1, 0x00048000);	/* Pin function: UART0 has 4 pins *
}


Best Regards.
Steven.

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