The MTTCAN controller uses different core clock frequencies depending on
the SoC variant: 40MHz for T264 and 50MHz for T194/T234. The 8Mbps data
bitrate needs to be an exact divisor of the clock frequency for proper
operation.
For 40MHz clock: 8Mbps = 8000000 bps (40MHz / 5)
For 50MHz clock: 8Mbps = 8333333 bps (50MHz / 6)
The previous single MTTCAN_SPEED_8MBPS definition (8333333) only worked
correctly for 50MHz clocks and would not divide evenly for 40MHz clocks.
Split MTTCAN_SPEED_8MBPS into two separate defines:
- MTTCAN_SPEED_8MBPS_40MHZ: 8000000 for exact 8Mbps on 40MHz clock
- MTTCAN_SPEED_8MBPS_50MHZ: 8333333 for closest 8Mbps on 50MHz clock
Both values use the same production settings (prod_c_can_8m) and will be
selected based on the chip's configured clock frequency. The 5Mbps rate
remains unchanged as it divides evenly for both clock frequencies.
Bug 5497458
Change-Id: I17190ae6821f89d33e76114f20b91dbd65ba25f2
Signed-off-by: Shubhi Garg <shgarg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3469194
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: Kevin Fu <chunhuaif@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Instead of using the Linux kernel version, use the
configs coming from core kernel to find out whether
legacy or next-gen prod configuration method is used.
This will help on porting changes on any kernel and
configuring via core kernel configs.
Bug 3389584
Change-Id: I19c242c573dd63c7dbecbf87d4ba807857dcf4fb
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3013911
Reviewed-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Add new prod setting support which is the
property based on device tree. The prod
setting of each register field are new property
in DT and prod configurations are configured
via these new properties.
Bug 4097475
Change-Id: I86adc7b72a28802d73fee8a085db2bccf0d6d1cc
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2996771
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
