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Mon May 7 15:54:37 EDT 2018

/sys mention of pru

# cd /sys
# find -name '*pru*'
./devices/platform/ocp/4a326000.pruss-soc-bus
./devices/platform/ocp/480c8000.mailbox/mbox/mbox_pru1
./devices/platform/ocp/480c8000.mailbox/mbox/mbox_pru0
./class/mbox/mbox_pru1
./class/mbox/mbox_pru0
./firmware/devicetree/base/__symbols__/mbox_pru1
./firmware/devicetree/base/__symbols__/P9_19_pru_uart_pin
./firmware/devicetree/base/__symbols__/pru1
./firmware/devicetree/base/__symbols__/pruss
./firmware/devicetree/base/__symbols__/pruss_soc_bus
./firmware/devicetree/base/__symbols__/P9_20_pru_uart_pin
./firmware/devicetree/base/__symbols__/mbox_pru0
./firmware/devicetree/base/__symbols__/pru0
./firmware/devicetree/base/__symbols__/pruss_ocp_gclk
./firmware/devicetree/base/__symbols__/pruss_mdio
./firmware/devicetree/base/__symbols__/pruss_intc
./firmware/devicetree/base/ocp/pruss_soc_bus@4a326000
./firmware/devicetree/base/ocp/pruss_soc_bus@4a326000/pruss@4a300000
./firmware/devicetree/base/ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a338000
./firmware/devicetree/base/ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a334000
./firmware/devicetree/base/ocp/mailbox@480C8000/mbox_pru1
./firmware/devicetree/base/ocp/mailbox@480C8000/mbox_pru0
./firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_20_pru_uart_pin
./firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_19_pru_uart_pin
./firmware/devicetree/base/ocp/l4_wkup@44c00000/prcm@200000/clocks/pruss_ocp_gclk@530
./bus/platform/devices/4a326000.pruss-soc-bus
./bus/platform/drivers/pru-rproc
./bus/platform/drivers/ti-pruss
./bus/platform/drivers/pruss-intc
./module/pru_rproc
./module/pru_rproc/drivers/platform:pru-rproc
./module/pruss
./module/pruss/holders/pru_rproc
./module/pruss/drivers/platform:ti-pruss
./module/pruss_intc
./module/pruss_intc/holders/pru_rproc
./module/pruss_intc/drivers/platform:pruss-intc


Diff with the other one:
tom@zoe:~$ ssh root@bbbr  find /sys -name '*pru*' > find_pru_bbbr
tom@zoe:~$ ssh root@bb49  find /sys -name '*pru*' > find_pru_bb49

tom@zoe:~$ diff -Naur find_pru_bbbr find_pru_bb49 | grep '^+'
+++ find_pru_bb49       2018-05-07 15:57:25.281996203 -0400
+/sys/kernel/debug/clk/pruss_ocp_gclk
+/sys/devices/platform/ocp/4a326000.pruss-soc-bus/4a300000.pruss
+/sys/devices/platform/ocp/4a326000.pruss-soc-bus/4a300000.pruss/4a338000.pru1
+/sys/devices/platform/ocp/4a326000.pruss-soc-bus/4a300000.pruss/4a334000.pru0
+/sys/firmware/devicetree/base/__symbols__/P9_30_pruout_pin
+/sys/firmware/devicetree/base/__symbols__/P9_92_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_30_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_24_pru_uart_pin
+/sys/firmware/devicetree/base/__symbols__/P9_42_pru_ecap_pin
+/sys/firmware/devicetree/base/__symbols__/P9_26_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_27_pruout_pin
+/sys/firmware/devicetree/base/__symbols__/P8_15_pru_ecap_pin
+/sys/firmware/devicetree/base/__symbols__/P9_91_pruout_pin
+/sys/firmware/devicetree/base/__symbols__/P8_15_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_24_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_17_pru_uart_pin
+/sys/firmware/devicetree/base/__symbols__/P9_21_pru_uart_pin
+/sys/firmware/devicetree/base/__symbols__/P9_26_pru_uart_pin
+/sys/firmware/devicetree/base/__symbols__/P8_11_pruout_pin
+/sys/firmware/devicetree/base/__symbols__/P9_27_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_92_pruout_pin
+/sys/firmware/devicetree/base/__symbols__/P9_41_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_91_pruin_pin
+/sys/firmware/devicetree/base/__symbols__/P9_18_pru_uart_pin
+/sys/firmware/devicetree/base/__symbols__/P9_22_pru_uart_pin
+/sys/firmware/devicetree/base/__symbols__/P8_12_pruout_pin
+/sys/firmware/devicetree/base/__symbols__/P8_16_pruin_pin
+/sys/firmware/devicetree/base/ocp/pruss@4a300000
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_42_pru_ecap_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_91_pruout_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_27_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_41_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_91_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P8_15_pru_ecap_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P8_11_pruout_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_92_pruout_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P8_16_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_17_pru_uart_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_21_pru_uart_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_26_pru_uart_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P8_12_pruout_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_18_pru_uart_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_92_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_22_pru_uart_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_30_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_30_pruout_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_26_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_27_pruout_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P8_15_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_24_pruin_pin
+/sys/firmware/devicetree/base/ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_P9_24_pru_uart_pin
+/sys/bus/platform/devices/4a300000.pruss
+/sys/bus/platform/devices/4a338000.pru1
+/sys/bus/platform/devices/4a334000.pru0
+/sys/bus/platform/drivers/pru-rproc/4a338000.pru1
+/sys/bus/platform/drivers/pru-rproc/4a334000.pru0
+/sys/bus/platform/drivers/ti-pruss/4a300000.pruss
+/sys/bus/platform/drivers/pruss-soc-bus
+/sys/bus/platform/drivers/pruss-soc-bus/4a326000.pruss-soc-bus
+/sys/module/pruss_soc_bus
+/sys/module/pruss_soc_bus/drivers/platform:pruss-soc-bus


this was it:

# modprobe pruss_soc_bus

[  784.591205] ti-pruss 4a300000.pruss: creating PRU cores and other child platform devices
[  784.603419] remoteproc remoteproc1: 4a334000.pru0 is available
[  784.609603] pru-rproc 4a334000.pru0: PRU rproc node /ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a334000 probed successfully
[  784.623308] remoteproc remoteproc2: 4a338000.pru1 is available
[  784.629481] pru-rproc 4a338000.pru1: PRU rproc node /ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a338000 probed successfully



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