[U-Boot] [PATCH 4/5] arm/km: trigger reconfiguration for the Xilinx FPGA

[Holger Brunck]

The Xilinx FPGA must be reconfigured each time the unit
reboots. The FPGA is connected to the GPIO pin 39 from kirkwood.
This patch triggers this pin for km_kirkwood_pci targets.

Signed-off-by: Holger Brunck <holger.brunck at keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
cc: Prafulla Wadaskar <prafulla at marvell.com>
---
 board/keymile/km_arm/km_arm.c |    7 ++++++-
 boards.cfg                    |    2 +-
 include/configs/km_kirkwood.h |    3 +++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index cfd0de7..7e4facc 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -257,7 +257,12 @@ int board_early_init_f(void)
 	kw_gpio_set_valid(KM_KIRKWOOD_ENV_WP, 38);
 	kw_gpio_direction_output(KM_KIRKWOOD_ENV_WP, 1);
 #endif
-
+#if defined(CONFIG_KM_RECONFIG_XLX)
+	/* trigger the reconfiguration of the xilinx fpga */
+	kw_gpio_set_valid(KM_XLX_PROGRAM_B_PIN, 1);
+	kw_gpio_direction_output(KM_XLX_PROGRAM_B_PIN, 0);
+	kw_gpio_direction_input(KM_XLX_PROGRAM_B_PIN);
+#endif
 	return 0;
 }
 
diff --git a/boards.cfg b/boards.cfg
index 8a5bfc1..afd73ef 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -129,7 +129,7 @@ davinci_schmoogie            arm         arm926ejs   schmoogie           davinci
 davinci_sffsdr               arm         arm926ejs   sffsdr              davinci        davinci
 davinci_sonata               arm         arm926ejs   sonata              davinci        davinci
 km_kirkwood                  arm         arm926ejs   km_arm              keymile        kirkwood	km_kirkwood:KM_DISABLE_PCI
-km_kirkwood_pci              arm         arm926ejs   km_arm              keymile        kirkwood	km_kirkwood
+km_kirkwood_pci              arm         arm926ejs   km_arm              keymile        kirkwood	km_kirkwood:KM_RECONFIG_XLX
 mgcoge3un                    arm         arm926ejs   km_arm              keymile        kirkwood
 portl2                       arm         arm926ejs   km_arm              keymile        kirkwood
 inetspace_v2                 arm         arm926ejs   netspace_v2         LaCie          kirkwood    netspace_v2:INETSPACE_V2
diff --git a/include/configs/km_kirkwood.h b/include/configs/km_kirkwood.h
index e51b270..ed36124 100644
--- a/include/configs/km_kirkwood.h
+++ b/include/configs/km_kirkwood.h
@@ -54,4 +54,7 @@
 #define KM_IVM_BUS	"pca9544a:70:9"	/* I2C2 (Mux-Port 1)*/
 #define KM_ENV_BUS	"pca9544a:70:d"	/* I2C2 (Mux-Port 5)*/
 
+/* GPIO Pin from kirkwood connected to PROGRAM_B pin of the xilinx FPGA */
+#define KM_XLX_PROGRAM_B_PIN    39
+
 #endif /* _CONFIG_KM_KIRKWOOD */
-- 
1.7.1