On Tue, 12 Nov 2013 20:19:04 +0100 Stephen Warren <[email protected]> wrote:
> On 11/06/2013 08:58 PM, Mark Zhang wrote: > > Correct Tegra30 SMMU register map. > > Some more explanation is required here re: why this layout is more > correct than what's there. > > Do you need to edit the reg property in Tegra30's memory-controller node > too; that's what all these reg ranges are interleaved with, so > presumably if there was a mistake in the SMMU ranges, there's the > equivalent inverse mistake in the MC's ranges? > > The DT binding for nvidia,tegra30-smmu states that reg should include > precisely 3 entries. This patch no longer conforms to that. The binding > needs to be re-written to explain the interleaving issue, and say that > an arbitrary number of ranges may be provided. The same issue exists in > the nvidia,tegra30-mc DT binding. > > I think I'm beginning to regret separating out the MC and SMMU into > separate DT nodes:-( What's difficult is that how to handle the undocumented register area. If we get rid of undocumented/reserved register area, then the number of banks in SMMU/MC would increase unnecessarily. But practically we can handle MC/SMMU multi register banks by just identifying MC/SMMU portion with checking undocumented ones. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
