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Stephen Warren authored
commit 4f2fe2d2 upstream. To avoid memory fetch underflows with larger USB transfers, Tegra SoCs need txfill_tuning's txfifothresh register field set to a non-default value. Add a custom reset override in order to set this up. These values are recommended practice for all Tegra chips. However, I've only noticed practical problems when not setting them this way on systems using Tegra124. Hence, CC: stable only for recent kernels which actually support Tegra124. Signed-off-by:
Stephen Warren <swarren@nvidia.com> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Tested-by:
Alexandre Courbot <acourbot@nvidia.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stephen Warren authoredcommit 4f2fe2d2 upstream. To avoid memory fetch underflows with larger USB transfers, Tegra SoCs need txfill_tuning's txfifothresh register field set to a non-default value. Add a custom reset override in order to set this up. These values are recommended practice for all Tegra chips. However, I've only noticed practical problems when not setting them this way on systems using Tegra124. Hence, CC: stable only for recent kernels which actually support Tegra124. Signed-off-by:
Stephen Warren <swarren@nvidia.com> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Tested-by:
Alexandre Courbot <acourbot@nvidia.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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