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| author | Suman Anna <s-anna@ti.com> | 2020-09-11 21:43:35 -0700 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2020-09-11 21:43:35 -0700 |
| commit | 78251639d376a4ea1a795a4f3dcd985fcdf9aed3 (patch) | |
| tree | 6c416303010cce8b1c33acc89afef707c086b311 /drivers/soc/ti/Kconfig | |
| parent | dc1129564a0147feb459159fd220ae22357e2eb6 (diff) | |
| download | linux-stable-78251639d376a4ea1a795a4f3dcd985fcdf9aed3.tar.gz linux-stable-78251639d376a4ea1a795a4f3dcd985fcdf9aed3.tar.bz2 linux-stable-78251639d376a4ea1a795a4f3dcd985fcdf9aed3.zip | |
soc: ti: pruss: Add support for PRU-ICSSs on AM437x SoCs
The AM437x SoCs have two different PRU-ICSS subsystems: PRU-ICSS1
and a smaller PRU-ICSS0. Enhance the PRUSS platform driver to support
both the PRU-ICSS sub-systems on these SoCs.
The PRU-ICSS1 on AM437x is very similar to the PRU-ICSS on AM33xx
except for few minor differences - increased Instruction RAM, increased
Shared Data RAM2, and 1 less interrupt (PRUSS host interrupt 7 which is
redirected to the other PRUSS) towards the MPU INTC. The PRU-ICSS0 is
a cut-down version of the IP, with less DRAM per PRU, no Shared DRAM etc.
It also does not have direct access to L3 bus regions, there is a single
interface to L3 for both PRUSS0 and PRUSS1, and it would have to go
through the PRUSS1's interface. The PRUSS_SYSCFG register is reserved on
PRUSS0, so any external access requires the programming the corresponding
PRUSS_SYSCFG register in PRUSS1. It does have its own dedicated I/O lines
though. Note that this instance does not support any PRU Ethernet related
use cases.
The adaptation uses SoC-specific compatibles in the driver and uses
a newly introduced pruss_match_private_data structure and the
pruss_get_private_data() function to retrieve a PRUSS instance specific
data using a device-name based lookup logic. The reset and the L3 external
access are managed by the parent interconnect ti-sysc bus driver so that
PRUSS1 and PRUSS0 can be independently supported.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Diffstat (limited to 'drivers/soc/ti/Kconfig')
| -rw-r--r-- | drivers/soc/ti/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/soc/ti/Kconfig b/drivers/soc/ti/Kconfig index b934bc341d26..40d6a222275f 100644 --- a/drivers/soc/ti/Kconfig +++ b/drivers/soc/ti/Kconfig @@ -103,7 +103,7 @@ config TI_K3_SOCINFO config TI_PRUSS tristate "TI PRU-ICSS Subsystem Platform drivers" - depends on SOC_AM33XX + depends on SOC_AM33XX || SOC_AM43XX select MFD_SYSCON help TI PRU-ICSS Subsystem platform specific support. |