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authorStefan Roese <sr@denx.de>2008-06-06 00:22:29 +1000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2008-06-11 08:06:51 -0400
commit995ada8d5e6b3d5a32ca3e544a564d0623c4f3fa (patch)
tree2fd4502a2cb80b905da9e340e81924f3f4f0ad6d
parent156cea23acffaa270cf243a3a0f43e1e30682081 (diff)
downloadop-kernel-dev-995ada8d5e6b3d5a32ca3e544a564d0623c4f3fa.zip
op-kernel-dev-995ada8d5e6b3d5a32ca3e544a564d0623c4f3fa.tar.gz
powerpc/4xx: PCIe driver now detects if a port is disabled via the dev-tree
This patch add a check to the PPC4xx PCIe driver to detect if the port is disabled via the device-tree. This is needed for the AMCC Canyonlands board which has an option to either select 2 PCIe ports or 1 PCIe port and one SATA port. The SATA port and the 1st PCIe port pins are multiplexed so we can't start both drivers. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-rw-r--r--arch/powerpc/sysdev/ppc4xx_pci.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index b4a54c5..76886cf 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -1634,6 +1634,15 @@ static void __init ppc4xx_probe_pciex_bridge(struct device_node *np)
}
port = &ppc4xx_pciex_ports[portno];
port->index = portno;
+
+ /*
+ * Check if device is enabled
+ */
+ if (!of_device_is_available(np)) {
+ printk(KERN_INFO "PCIE%d: Port disabled via device-tree\n", port->index);
+ return;
+ }
+
port->node = of_node_get(np);
pval = of_get_property(np, "sdr-base", NULL);
if (pval == NULL) {
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