On Thu, Feb 16, 2017 at 05:57:53PM +0100, Arnd Bergmann wrote: > On Thu, Feb 16, 2017 at 5:44 PM, Russell King - ARM Linux > <linux@xxxxxxxxxxxxxxx> wrote: > > On Thu, Feb 16, 2017 at 11:17:39AM -0500, Chris Brandt wrote: > >> The PL310 in the Renesas RZ/A1 SoC (R7S72100) does not have the sideband > >> signals connected between the CPU and L2C. According the PL310 TRM, > >> sideband signals are optional. > >> > >> If a PL310 is added to a system, but the sideband signals are not > >> connected, some Cortex A9 optimizations cannot be used. In particular, > >> enabling Full Line Zeros in the CA9 without sidebands connected will > >> crash the system since the CA9 will expect the L2C to perform operations, > >> yet the L2C never gets the commands. > >> > >> This series adds the option to not enable anything in the PL310 that > >> uses sidebands, and then adds L2C support to the RZ/A1 DT. > >> > >> v4: > >> * changed l2x0_bresp_dis to l2x0_bresp_disable > >> * changed l2x0_flz_dis to l2x0_flz_disable > > > > Looks good, thanks. > > > > I'll want to merge patch 1, but I suspect the other two patches need > > to go through arm-soc, which will cause a problem due to being merged > > independently... Arnd? > > I just checked what we have queued up in next/dt for this platform, > and I'm fairly sure that there are no conflicts, so you can pick up all three > and add > > Acked-by: Arnd Bergmann <arnd@xxxxxxxx> Chris, can you put all three in the patch system, preferably with Arnd's ack for the last two please? Thanks. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
