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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>
This commit is contained in:
Stefan Roese 2008-06-06 00:22:29 +10:00 committed by Josh Boyer
parent 156cea23ac
commit 995ada8d5e
1 changed files with 9 additions and 0 deletions
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9
arch/powerpc/sysdev/ppc4xx_pci.c
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@ -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) {