Re: [yocto] [meta-raspberrypi][PATCH] CAN: Add Pican2 support

[Andrei Gherzan]

Hi Fabien,

On Fri, Nov 16, 2018 at 5:29 PM Fabien Lahoudere <
fabien.lahoud...@collabora.com> wrote:

> In order to make Pican 2 work, we :
> - add mcp2515.dto to the overlay list
> - add a variable to enable it in local.conf
> - create a udev rule to mount interface
>

>
> http://skpang.co.uk/catalog/pican2-canbus-board-for-raspberry-pi-23-p-1475.html
>
> Signed-off-by: Fabien Lahoudere 
>

Could you please submit this PR in github? Check the readme for more
information.
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[yocto] [meta-raspberrypi][PATCH] CAN: Add Pican2 support

[Fabien Lahoudere]

In order to make Pican 2 work, we :
- add mcp2515.dto to the overlay list
- add a variable to enable it in local.conf
- create a udev rule to mount interface

http://skpang.co.uk/catalog/pican2-canbus-board-for-raspberry-pi-23-p-1475.html

Signed-off-by: Fabien Lahoudere 
---
 docs/extra-build-config.md | 9 +
 recipes-bsp/bootfiles/rpi-config_git.bb| 6 ++
 recipes-core/udev/udev-rules-rpi.bb| 6 +-
 recipes-core/udev/udev-rules-rpi/can.rules | 1 +
 4 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 recipes-core/udev/udev-rules-rpi/can.rules

diff --git a/docs/extra-build-config.md b/docs/extra-build-config.md
index 732c102..4376462 100644
--- a/docs/extra-build-config.md
+++ b/docs/extra-build-config.md
@@ -246,6 +246,15 @@ When using device tree kernels, set this variable to 
enable the 802.15.4 hat:
 
 See: 
 
+## Enable CAN with Pican2
+
+In order to use Pican2 CAN module, set the following variables:
+
+   ENABLE_SPI_BUS = "1"
+   ENABLE_CAN = "1"
+
+See: 

+
 ## Manual additions to config.txt
 
 The `RPI_EXTRA_CONFIG` variable can be used to manually add additional lines to
diff --git a/recipes-bsp/bootfiles/rpi-config_git.bb 
b/recipes-bsp/bootfiles/rpi-config_git.bb
index d92b8e4..d0d1fba 100644
--- a/recipes-bsp/bootfiles/rpi-config_git.bb
+++ b/recipes-bsp/bootfiles/rpi-config_git.bb
@@ -183,6 +183,12 @@ do_deploy() {
 echo "dtoverlay=at86rf233,speed=300" 
>>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
 fi
 
+# ENABLE CAN
+if [ "${ENABLE_CAN}" = "1" ]; then
+echo "# Enable CAN" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+echo "dtoverlay=mcp2515-can0,oscillator=1600,interrupt=25" 
>>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+fi
+
 # Append extra config if the user has provided any
 echo "${RPI_EXTRA_CONFIG}" >> ${DEPLOYDIR}/bcm2835-bootfiles/config.txt
 }
diff --git a/recipes-core/udev/udev-rules-rpi.bb 
b/recipes-core/udev/udev-rules-rpi.bb
index edef0db..42cfcdd 100644
--- a/recipes-core/udev/udev-rules-rpi.bb
+++ b/recipes-core/udev/udev-rules-rpi.bb
@@ -2,7 +2,10 @@ DESCRIPTION = "udev rules for Raspberry Pi Boards"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = 
"file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
 
-SRC_URI = " file://99-com.rules"
+SRC_URI = " \
+   file://99-com.rules \
+   file://can.rules \
+   "
 
 S = "${WORKDIR}"
 
@@ -11,4 +14,5 @@ INHIBIT_DEFAULT_DEPS = "1"
 do_install () {
 install -d ${D}${sysconfdir}/udev/rules.d
 install -m 0644 ${WORKDIR}/99-com.rules ${D}${sysconfdir}/udev/rules.d/
+install -m 0644 ${WORKDIR}/can.rules ${D}${sysconfdir}/udev/rules.d/
 }
diff --git a/recipes-core/udev/udev-rules-rpi/can.rules 
b/recipes-core/udev/udev-rules-rpi/can.rules
new file mode 100644
index 000..a47d57d
--- /dev/null
+++ b/recipes-core/udev/udev-rules-rpi/can.rules
@@ -0,0 +1 @@
+SUBSYSTEM=="net", 
DEVPATH=="/devices/platform/soc/3f204000.spi/spi_master/spi0/spi0.0/net/can0", 
RUN+="/sbin/ip link set can0 up type can bitrate 50"
-- 
1.8.3.1

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