[U-Boot-Users] [PATCH V2] ppc4xx: Canyonlands: Disable PCIe0/SATA in dev-tree depending on selection

[Stefan Roese]

When SATA is selected (via jumper J6) we need to disable the first PCIe
node in the device tree, so that Linux doesn't initialize it. Otherwise
the Linux SATA driver will fail to detect the devices.

The same goes the other way around too. So if PCIe is selected we need
to disable the SATA node in the device tree.

This is because PCIe port 0 and SATA on 460EX share the same pins
(multiplexed) and we have to configure in U-Boot which peripheral is
enabled.

Signed-off-by: Stefan Roese <sr at denx.de>
---
 board/amcc/canyonlands/canyonlands.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/board/amcc/canyonlands/canyonlands.c b/board/amcc/canyonlands/canyonlands.c
index 9986e9a..9c458b9 100644
--- a/board/amcc/canyonlands/canyonlands.c
+++ b/board/amcc/canyonlands/canyonlands.c
@@ -479,5 +479,31 @@ void ft_board_setup(void *blob, bd_t *bd)
 	if (rc)
 		printf("Unable to update property NOR mapping, err=%s\n",
 		       fdt_strerror(rc));
+
+	if (gd->board_type == BOARD_CANYONLANDS_SATA) {
+		/*
+		 * When SATA is selected we need to disable the first PCIe
+		 * node in the device tree, so that Linux doesn't initialize
+		 * it.
+		 */
+		rc = fdt_find_and_setprop(blob, "/plb/pciex at d00000000", "status",
+					  "disabled", sizeof("disabled"), 1);
+		if (rc)
+			printf("Unable to update property status in PCIe node, err=%s\n",
+			       fdt_strerror(rc));
+	}
+
+	if (gd->board_type == BOARD_CANYONLANDS_PCIE) {
+		/*
+		 * When PCIe is selected we need to disable the SATA
+		 * node in the device tree, so that Linux doesn't initialize
+		 * it.
+		 */
+		rc = fdt_find_and_setprop(blob, "/plb/sata at bffd1000", "status",
+					  "disabled", sizeof("disabled"), 1);
+		if (rc)
+			printf("Unable to update property status in PCIe node, err=%s\n",
+			       fdt_strerror(rc));
+	}
 }
 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
-- 
1.5.5.1