| From | Ben Hutchings <> | Date | Mon, 31 Mar 2014 00:23:35 +0100 | Subject | [PATCH 3.2 082/200] of: Fix address decoding on Bimini and js2x machines |
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3.2.56-rc1 review patch. If anyone has any objections, please let me know.
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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
commit 6dd18e4684f3d188277bbbc27545248487472108 upstream.
Commit:
e38c0a1fbc5803cbacdaac0557c70ac8ca5152e7 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: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/of/address.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -97,8 +97,12 @@ static unsigned int of_bus_default_get_f 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,
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