** Description changed:
+ [Impact]
+
+ /dev/spidev0 not present.
+
+ [Test Case]
+
+ 1) Add 'dtparam=spi=on' to /boot/firmware/config.txt.
+ 2) Boot fixed kernel.
+ 3) Verify /dev/spidev0 is present.
+
+ [Fix]
+
+ Enable CONFIG_DW_AXI_DMAC.
+
+ [Where Problems Could Occur]
+
+ A new kernel modules is loaded at boot so we could see hangs, freezes,
+ stack traces or any other buggy kernel code symptoms.
+
+ [Original Description]
+
While trying to access spidev0 on ubuntu 23.10 server version for
raspberrypi model 5 did not find spidev0.
On further debugging with raspi team it was observed that DMA is not set.
Link to the discussion:
https://forums.raspberrypi.com/viewtopic.php?t=360436&start=25
ubuntu@ubuntu:~$ sudo modprobe configs
ubuntu@ubuntu:~$ zcat /proc/config.gz | grep DW_AXI_DMAC
# CONFIG_DW_AXI_DMAC is not set
Details of platform used
ubuntu@ubuntu:~$ ls -al /dev/spi*
crw------- 1 root root 153, 0 Dec 7 16:14 /dev/spidev10.0
ubuntu@ubuntu:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 23.10
Release: 23.10
Codename: mantic
ubuntu@ubuntu:~$ cat /etc/os-release
PRETTY_NAME="Ubuntu 23.10"
NAME="Ubuntu"
VERSION_ID="23.10"
VERSION="23.10 (Mantic Minotaur)"
VERSION_CODENAME=mantic
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/";
SUPPORT_URL="https://help.ubuntu.com/";
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/";
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy";
UBUNTU_CODENAME=mantic
LOGO=ubuntu-logo
ubuntu@ubuntu:~$ cat /proc/cpuinfo | grep Model
Model : Raspberry Pi 5 Model B Rev 1.0
** Also affects: linux-raspi (Ubuntu Mantic)
Importance: Undecided
Status: New
** Description changed:
[Impact]
/dev/spidev0 not present.
+
+ [Fix]
+
+ Enable CONFIG_DW_AXI_DMAC.
[Test Case]
1) Add 'dtparam=spi=on' to /boot/firmware/config.txt.
2) Boot fixed kernel.
3) Verify /dev/spidev0 is present.
-
- [Fix]
-
- Enable CONFIG_DW_AXI_DMAC.
[Where Problems Could Occur]
A new kernel modules is loaded at boot so we could see hangs, freezes,
stack traces or any other buggy kernel code symptoms.
[Original Description]
While trying to access spidev0 on ubuntu 23.10 server version for
raspberrypi model 5 did not find spidev0.
On further debugging with raspi team it was observed that DMA is not set.
Link to the discussion:
https://forums.raspberrypi.com/viewtopic.php?t=360436&start=25
ubuntu@ubuntu:~$ sudo modprobe configs
ubuntu@ubuntu:~$ zcat /proc/config.gz | grep DW_AXI_DMAC
# CONFIG_DW_AXI_DMAC is not set
Details of platform used
ubuntu@ubuntu:~$ ls -al /dev/spi*
crw------- 1 root root 153, 0 Dec 7 16:14 /dev/spidev10.0
ubuntu@ubuntu:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 23.10
Release: 23.10
Codename: mantic
ubuntu@ubuntu:~$ cat /etc/os-release
PRETTY_NAME="Ubuntu 23.10"
NAME="Ubuntu"
VERSION_ID="23.10"
VERSION="23.10 (Mantic Minotaur)"
VERSION_CODENAME=mantic
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/";
SUPPORT_URL="https://help.ubuntu.com/";
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/";
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy";
UBUNTU_CODENAME=mantic
LOGO=ubuntu-logo
ubuntu@ubuntu:~$ cat /proc/cpuinfo | grep Model
Model : Raspberry Pi 5 Model B Rev 1.0
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-raspi in Ubuntu.
https://bugs.launchpad.net/bugs/2045947
Title:
spidev0 missing on raspberrypi5 on ubuntu 23.10 server and desktop
version
Status in linux-raspi package in Ubuntu:
Confirmed
Status in linux-raspi source package in Mantic:
New
Bug description:
[Impact]
/dev/spidev0 not present.
[Fix]
Enable CONFIG_DW_AXI_DMAC.
[Test Case]
1) Add 'dtparam=spi=on' to /boot/firmware/config.txt.
2) Boot fixed kernel.
3) Verify /dev/spidev0 is present.
[Where Problems Could Occur]
A new kernel modules is loaded at boot so we could see hangs, freezes,
stack traces or any other buggy kernel code symptoms.
[Original Description]
While trying to access spidev0 on ubuntu 23.10 server version for
raspberrypi model 5 did not find spidev0.
On further debugging with raspi team it was observed that DMA is not set.
Link to the discussion:
https://forums.raspberrypi.com/viewtopic.php?t=360436&start=25
ubuntu@ubuntu:~$ sudo modprobe configs
ubuntu@ubuntu:~$ zcat /proc/config.gz | grep DW_AXI_DMAC
# CONFIG_DW_AXI_DMAC is not set
Details of platform used
ubuntu@ubuntu:~$ ls -al /dev/spi*
crw------- 1 root root 153, 0 Dec 7 16:14 /dev/spidev10.0
ubuntu@ubuntu:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 23.10
Release: 23.10
Codename: mantic
ubuntu@ubuntu:~$ cat /etc/os-release
PRETTY_NAME="Ubuntu 23.10"
NAME="Ubuntu"
VERSION_ID="23.10"
VERSION="23.10 (Mantic Minotaur)"
VERSION_CODENAME=mantic
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/";
SUPPORT_URL="https://help.ubuntu.com/";
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/";
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy";
UBUNTU_CODENAME=mantic
LOGO=ubuntu-logo
ubuntu@ubuntu:~$ cat /proc/cpuinfo | grep Model
Model : Raspberry Pi 5 Model B Rev 1.0
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2045947/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
