omap1: Fix redundant UARTs pin muxing that can break other hardware support

Commit 15ac408ee5a509053a765b816e9179515329369f removed enabled_uart
and OMAP_TAG_UART. This works for mach-omap2, but causes issues on
mach-omap1 for some boards as the mach-omap1 serial.c was muxing
pins based on the enabled_uart flag for 15xx.

Fix this by muxing pins in board-*.c files for the 15xx boards for
the uart ports that had enabled_uart flag set before the commit
above.

Tested on Amsdtrad Delta only.

Note that in the future we should add support for powering down
the uarts with a timer like mach-omap2/serial.c does. Otherwise
the enabled uarts will be blocking retention-while-idle.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mach-omap1/board-palmtt.c b/arch/arm/mach-omap1/board-palmtt.c
index 8256139891ff..d972cf941b76 100644
--- a/arch/arm/mach-omap1/board-palmtt.c
+++ b/arch/arm/mach-omap1/board-palmtt.c
@@ -289,6 +289,14 @@ static void __init omap_mpu_wdt_mode(int mode) {
 
 static void __init omap_palmtt_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+        omap_cfg_reg(UART2_TX);
+        omap_cfg_reg(UART2_RTS);
+        omap_cfg_reg(UART3_TX);
+        omap_cfg_reg(UART3_RX);
+
         omap_mpu_wdt_mode(0);
 
         omap_board_config = palmtt_config;