[U-Boot] [PATCH] tqm5200: Correct comment and code in post_hotkeys_pressed.

[Detlev Zundel]

This fixes the code and the comment according to the original intent of
doing an intensive memory test when PSC6_3 is pulled low on the STK52xx.
Notably PORT_CONFIG will be overridden with this correct code now,
so beware.

The original code only worked by coincidence depending on the PORT_CONFIG
setting from the header file.  The new code was tested to ensure that the
(undocumented) memory test still works on the STK52x.

Signed-off-by: Detlev Zundel <dzu at denx.de>
CC: Martin Krause <Martin.Krause at tqs.de>
---
 board/tqc/tqm5200/tqm5200.c |    6 ++----
 include/configs/TQM5200.h   |    2 ++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/board/tqc/tqm5200/tqm5200.c b/board/tqc/tqm5200/tqm5200.c
index faa2e02..5a091c4 100644
--- a/board/tqc/tqm5200/tqm5200.c
+++ b/board/tqc/tqm5200/tqm5200.c
@@ -358,11 +358,9 @@ int post_hotkeys_pressed(void)
 	gpio = (struct mpc5xxx_gpio*) MPC5XXX_GPIO;
 
 	/*
-	 * Configure PSC6_1 and PSC6_3 as GPIO. PSC6 then couldn't be used in
-	 * CODEC or UART mode. Consumer IrDA should still be possible.
+	 * Configure PSC6_0 through PSC6_3 as GPIO.
 	 */
-	gpio->port_config &= ~(0x07000000);
-	gpio->port_config |=   0x03000000;
+	gpio->port_config &= ~(0x00700000);
 
 	/* Enable GPIO for GPIO_IRDA_1 (IR_USB_CLK pin) = PSC6_3 */
 	gpio->simple_gpioe |= 0x20000000;
diff --git a/include/configs/TQM5200.h b/include/configs/TQM5200.h
index e626c75..aedc607 100644
--- a/include/configs/TQM5200.h
+++ b/include/configs/TQM5200.h
@@ -566,6 +566,8 @@
  *	 101 -> use PSC6 as UART. Pins PSC6_0 to PSC6_3 are used.
  *		Extended POST test is not available.
  *		Use for STK52xx, FO300 and CAM5200 boards.
+ *              WARNING: When the extended POST is enabled, these bits will
+ *                       be overridden by this code as GPIOs!
  * use PCI_DIS: Bit 16 (mask 0x00008000):
  *	   1 -> disable PCI controller (on CAM5200 board).
  * use USB: Bits 18-19 (mask 0x00003000):
-- 
1.6.0.6