kernel/drivers/memory/tegra/tegra124-emc.c, branch linux-4.3.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-4.3.y2015-07-16T07:51:47Zmemory: tegra: Expose supported rates via debugfs2015-07-16T07:51:47ZThierry Redingtreding@nvidia.com2015-05-18T15:35:30Zurn:sha1:30a636f984984655ad5350e73a6a3141c9ba85ae
In order to ease testing, expose the list of supported EMC frequencies
via debugfs.
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
memory: tegra: Add EMC frequency debugfs entry2015-05-05T09:39:48ZMikko Perttunenmperttunen@nvidia.com2015-03-12T14:48:06Zurn:sha1:9c77a81f215bfeee8f96c50c8ab27dbebffec80d
This file in debugfs can be used to get or set the EMC frequency.
Reading the file will return the currently set frequency in Hz, while
writing the file sets the specified frequency rounded to the next
highest frequency supported by the board.
Will be very useful when tuning memory scaling.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
[treding@nvidia.com: add "emc" debugfs directory]
Signed-off-by: Thierry Reding <treding@nvidia.com>
memory: tegra: Add EMC (external memory controller) driver2015-05-05T09:12:17ZMikko Perttunenmperttunen@nvidia.com2015-03-12T14:48:03Zurn:sha1:73a7f0a90641b09300d47308682b674c570dd6a2
Implements functionality needed to change the rate of the memory bus
clock.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>