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, 20 insertions, 0 deletions

diff --git a/arch/arm/mach-omap1/board-innovator.c b/arch/arm/mach-omap1/board-innovator.c
index cc2abbb2d0f4..cd6c39514826 100644
--- a/arch/arm/mach-omap1/board-innovator.c
+++ b/arch/arm/mach-omap1/board-innovator.c
@@ -376,6 +376,26 @@ static void __init innovator_init(void)
 {
 #ifdef CONFIG_ARCH_OMAP15XX
         if (cpu_is_omap1510()) {
+                unsigned char reg;
+
+                /* 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);
+
+                reg = fpga_read(OMAP1510_FPGA_POWER);
+                reg |= OMAP1510_FPGA_PCR_COM1_EN;
+                fpga_write(reg, OMAP1510_FPGA_POWER);
+                udelay(10);
+
+                reg = fpga_read(OMAP1510_FPGA_POWER);
+                reg |= OMAP1510_FPGA_PCR_COM2_EN;
+                fpga_write(reg, OMAP1510_FPGA_POWER);
+                udelay(10);
+
                 platform_add_devices(innovator1510_devices, ARRAY_SIZE(innovator1510_devices));
                 spi_register_board_info(innovator1510_boardinfo,
                                 ARRAY_SIZE(innovator1510_boardinfo));