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authorSteven A. Falco <sfalco@harris.com>2008-08-06 15:42:52 -0400
committerStefan Roese <sr@denx.de>2008-08-07 12:06:18 +0200
commiteab1007334b93a6209f1ec33615e26ef5311ede7 (patch)
tree8e9cb65e8e0eb326b51adb6ddb7f082ef0fa09a1 /board/amcc
parent81091f58f0c58ecd26c5b05de2ae20ca6cdb521c (diff)
ppc4xx: Sequoia has two UARTs in "4-pin" mode. Configure the GPIOs as per schematic.
The Sequoia board has two UARTs in "4-pin" mode. This patch modifies the GPIO configuration to match the schematic, and also sets the SDR0_PFC1 register to select the corresponding mode for the UARTs. Signed-off-by: Steven A. Falco <sfalco@harris.com> Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/amcc')
-rw-r--r--board/amcc/sequoia/sequoia.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/board/amcc/sequoia/sequoia.c b/board/amcc/sequoia/sequoia.c
index b833092f191..198db1a1d3b 100644
--- a/board/amcc/sequoia/sequoia.c
+++ b/board/amcc/sequoia/sequoia.c
@@ -93,6 +93,11 @@ int board_early_init_f(void)
#ifdef CONFIG_I2C_MULTI_BUS
sdr0_pfc1 |= ((sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) | SDR0_PFC1_SIS_IIC1_SEL);
#endif
+ /* Two UARTs, so we need 4-pin mode. Also, we want CTS/RTS mode. */
+ sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_U0IM_MASK) | SDR0_PFC1_U0IM_4PINS;
+ sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_U0ME_MASK) | SDR0_PFC1_U0ME_CTS_RTS;
+ sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_U1ME_MASK) | SDR0_PFC1_U1ME_CTS_RTS;
+
mfsdr(SDR0_PFC2, sdr0_pfc2);
sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) |
SDR0_PFC2_SELECT_CONFIG_4;