On Tue, Apr 23, 2019 at 02:58:11PM +0530, Manikanta Maddireddy wrote: > The logic which blocks read requests till AFI gets ACK for all outstanding > writes from memory controller does not behave correctly when number of > outstanding writes become more than 32 in Tegra124 and Tegra132. > > SW fixup is to prevent writes from accumulating more than 32 by, > - limiting outstanding posted writes to 14 > - modifying Gen1 and Gen2 UpdateFC timer frequency > > UpdateFC timer frequency is equal to twice the value of register content > in nsec. These settings are recommended after stress testing with different > values. > > Signed-off-by: Manikanta Maddireddy <mmaddireddy@xxxxxxxxxx> > --- > V2: Changed update_fc_val to update_fc_threshold > > drivers/pci/controller/pci-tegra.c | 34 ++++++++++++++++++++++++++++++ > 1 file changed, 34 insertions(+) Acked-by: Thierry Reding <treding@xxxxxxxxxx>
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