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Commit 6dd18e46 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Grant Likely
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of: Fix address decoding on Bimini and js2x machines 



 Commit:

  e38c0a1f
  of/address: Handle #address-cells > 2 specially

broke real time clock access on Bimini, js2x, and similar powerpc
machines using the "maple" platform. That code was indirectly relying
on the old (broken) behaviour of the translation for the hypertransport
to ISA bridge.

This fixes it by treating hypertransport as a PCI bus

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
parent ba166e90

drivers/of/address.c

+6 −2
Original line number Diff line number Diff line
@@ -106,8 +106,12 @@ static unsigned int of_bus_default_get_flags(const __be32 *addr) 


static int of_bus_pci_match(struct device_node *np)

{

	/* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */

	return !strcmp(np->type, "pci") || !strcmp(np->type, "vci");

	/*

	 * "vci" is for the /chaos bridge on 1st-gen PCI powermacs

	 * "ht" is hypertransport

	 */

	return !strcmp(np->type, "pci") || !strcmp(np->type, "vci") ||

		!strcmp(np->type, "ht");

}



static void of_bus_pci_count_cells(struct device_node *np,