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The UART2 on the AMD cs5536 is incorrectly configured in two places. 

GPIO lines 4 and 3 are swapped and also incorrectly put in IR mode receive (compound fault).

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Edwin Beasant <edwin_beasant@virtensys.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5074 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer 2010-02-03 13:49:24 +00:00 committed by Patrick Georgi
parent fa742da56b
commit 5a559d4386
2 changed files with 9 additions and 8 deletions
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16
src/southbridge/amd/cs5536/cs5536.c
View File

@ -298,7 +298,7 @@ static void uarts_init(struct southbridge_amd_cs5536_config *sb)
/* Set: OUTAUX1 Select (0x10) */
outl(GPIOL_8_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT);
/* GPIO8 - UART1_RX */
/* GPIO9 - UART1_RX */
/* Set: Input Enable (0x20) */
outl(GPIOL_9_SET, gpio_addr + GPIOL_INPUT_ENABLE);
/* Set: INAUX1 Select (0x34) */
@ -356,18 +356,18 @@ static void uarts_init(struct southbridge_amd_cs5536_config *sb)
msr.lo |= sb->com2_irq << 28;
wrmsr(MDD_IRQM_YHIGH, msr);
/* GPIO4 - UART2_RX */
/* Set: Output Enable (0x4) */
outl(GPIOL_4_SET, gpio_addr + GPIOL_OUTPUT_ENABLE);
/* Set: OUTAUX1 Select (0x10) */
outl(GPIOL_4_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT);
/* GPIO3 - UART2_TX */
/* GPIO3 - UART2_RX */
/* Set: Input Enable (0x20) */
outl(GPIOL_3_SET, gpio_addr + GPIOL_INPUT_ENABLE);
/* Set: INAUX1 Select (0x34) */
outl(GPIOL_3_SET, gpio_addr + GPIOL_IN_AUX1_SELECT);
/* GPIO4 - UART2_TX */
/* Set: Output Enable (0x4) */
outl(GPIOL_4_SET, gpio_addr + GPIOL_OUTPUT_ENABLE);
/* Set: OUTAUX1 Select (0x10) */
outl(GPIOL_4_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT);
/* Set: GPIO 3 and 4 Pull Up (0x18) */
outl(GPIOL_3_SET | GPIOL_4_SET,
gpio_addr + GPIOL_PULLUP_ENABLE);

1
src/southbridge/amd/cs5536/cs5536_early_setup.c
View File

@ -172,6 +172,7 @@ static void cs5536_setup_onchipuart(void)
outl(GPIOL_8_SET, GPIO_IO_BASE + GPIOL_OUTPUT_ENABLE);
/* Set: OUTAUX1 Select (0x10) */
outl(GPIOL_8_SET, GPIO_IO_BASE + GPIOL_OUT_AUX1_SELECT);
/* GPIO9 - UART1_RX */
/* Set: Input Enable (0x20) */
outl(GPIOL_9_SET, GPIO_IO_BASE + GPIOL_INPUT_ENABLE);