On 1/17/2014 5:08 AM, Andreas Herrmann wrote:
arm-smmu driver uses of_parse_phandle_with_args when parsing DT information to determine stream IDs for a master device. Thus the number of stream IDs per master device is bound by MAX_PHANDLE_ARGS. To support Calxeda ECX-2000 hardware arm-smmu driver requires a slightly higher value for MAX_PHANDLE_ARGS as this hardware has 10 stream IDs for one master device. Increasing it to 16 seems a reasonable choice. Cc: Grant Likely <[email protected]> Cc: Rob Herring <[email protected]> Cc: [email protected] Cc: Andreas Herrmann <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Andreas Herrmann <[email protected]> --- include/linux/of.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/of.h b/include/linux/of.h index 276c546..24e1b28 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -67,7 +67,7 @@ struct device_node { #endif }; -#define MAX_PHANDLE_ARGS 8 +#define MAX_PHANDLE_ARGS 16
Since the MMU-500 specify "Number of SMRs" upto 128 registers, shouldn't this be changed to be able to support 128 StreamIDs as well? Although I am not sure if this would be too big to have on the stack per Rob's comment in the previous patch set.
Thank you, Suravee -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
