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authorSuman Anna <s-anna@ti.com>2020-09-12 07:43:36 +0300
committerSantosh Shilimkar <santosh.shilimkar@oracle.com>2020-09-12 07:43:36 +0300
commit6530cd9b201db9a2f78c53a76b2dff4a5bf072fa (patch)
treec42306132c8bed2deca3fbd2664779846660d18b /drivers/soc/ti
parent3227c8daac3c34bcb7cef374c57c83844851c31e (diff)
downloadlinux-6530cd9b201db9a2f78c53a76b2dff4a5bf072fa.tar.xz
soc: ti: pruss: Enable support for ICSSG subsystems on K3 AM65x SoCs
The K3 AM65x family of SoCs have the next generation of the PRU-ICSS processor subsystem capable of supporting Gigabit Ethernet, and is commonly referred to as ICSSG. These SoCs contain typically three ICSSG instances named ICSSG0, ICSSG1 and ICSSG2. The three ICSSGs are identical to each other for the most part with minor SoC integration differences and capabilities. The ICSSG2 supports slightly enhanced features like SGMII mode Ethernet, while the ICSS0 and ICSSG1 instances are limited to MII mode only. The ICSSGs on K3 AM65x SoCs are in general super-sets of the PRUSS on the AM57xx/66AK2G SoCs. They include two additional auxiliary PRU cores called RTUs and few other additional sub-modules. The interrupt integration is also different on the K3 AM65x SoCs and are propagated through various SoC-level Interrupt Router and Interrupt Aggregator blocks. Other IP level differences include different constant tables, differences in system event interrupt input sources etc. They also do not have a programmable module reset line like those present on AM33xx/AM43xx SoCs. The modules are reset just like any other IP with the SoC's global cold/warm resets. The existing pruss platform driver has been updated to support these new ICSSG instances through new AM65x specific compatibles. A build dependency with ARCH_K3 is added to enable building all the existing PRUSS platform drivers for this ARMv8 platform. Signed-off-by: Suman Anna <s-anna@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')
-rw-r--r--drivers/soc/ti/Kconfig2
-rw-r--r--drivers/soc/ti/pruss.c1
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/soc/ti/Kconfig b/drivers/soc/ti/Kconfig
index c29034321b50..f5b82ffa637b 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 || SOC_AM43XX || SOC_DRA7XX || ARCH_KEYSTONE
+ depends on SOC_AM33XX || SOC_AM43XX || SOC_DRA7XX || ARCH_KEYSTONE || ARCH_K3
select MFD_SYSCON
help
TI PRU-ICSS Subsystem platform specific support.
diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c
index d5f128ec1e31..ccc9783c123a 100644
--- a/drivers/soc/ti/pruss.c
+++ b/drivers/soc/ti/pruss.c
@@ -163,6 +163,7 @@ static const struct of_device_id pruss_of_match[] = {
{ .compatible = "ti,am4376-pruss1", .data = &am437x_pruss1_data, },
{ .compatible = "ti,am5728-pruss" },
{ .compatible = "ti,k2g-pruss" },
+ { .compatible = "ti,am654-icssg" },
{},
};
MODULE_DEVICE_TABLE(of, pruss_of_match);