Difference between revisions of "Panda How to kernel 2 6 39"

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 +
== Introduction ==
 
The merge window has closed and 2.6.39-rc1 has been released, There are many Pandaboard related changes, including HDMI, DVI and wl21xx support.
 
The merge window has closed and 2.6.39-rc1 has been released, There are many Pandaboard related changes, including HDMI, DVI and wl21xx support.
  
As of -rc1:
+
== -rc1 ==
 
  * hdmi & dvi are broken due to some dss clocking issues, see: https://patchwork.kernel.org/patch/674062/ for details, a fix for dvi is available, see below.
 
  * hdmi & dvi are broken due to some dss clocking issues, see: https://patchwork.kernel.org/patch/674062/ for details, a fix for dvi is available, see below.
 
  * abe sound is not supported.
 
  * abe sound is not supported.
Line 7: Line 8:
 
  * wl12xx support is working to the extent that one can associate with an access point, get an IP address and ping out to the internet.
 
  * wl12xx support is working to the extent that one can associate with an access point, get an IP address and ping out to the internet.
  
As of -rc2
+
== -rc2 ==
 
  * Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code, so stay tuned for rc-3 in about a week or so.  
 
  * Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code, so stay tuned for rc-3 in about a week or so.  
 
  ** looks like lots of interesting changes queued up for the next -rc so stay tuned..
 
  ** looks like lots of interesting changes queued up for the next -rc so stay tuned..
  
As of -rc3
+
== -rc3 ==
 
  * Rebooting is broken (there was a post suggesting that it was broken in -rc2 as well) follow
 
  * Rebooting is broken (there was a post suggesting that it was broken in -rc2 as well) follow
 
  this thread for more info: http://www.spinics.net/lists/linux-omap/msg49746.html.
 
  this thread for more info: http://www.spinics.net/lists/linux-omap/msg49746.html.
Line 19: Line 20:
 
  * New in -rc3 is that the usb ethernet adapter appears as eth0 rather than usb0.
 
  * New in -rc3 is that the usb ethernet adapter appears as eth0 rather than usb0.
  
As of -rc4
+
== -rc4 ==
 
  * Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code, so stay tuned for rc-5 in about a week or so.  
 
  * Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code, so stay tuned for rc-5 in about a week or so.  
  
As of -rc5
+
== -rc5 ==
 
  * Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code,
 
  * Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code,
 
  * There have been lots of changes in other parts of the kernel, so it's time to see if anything in -rc5 breaks pandaboard.
 
  * There have been lots of changes in other parts of the kernel, so it's time to see if anything in -rc5 breaks pandaboard.
Line 30: Line 31:
 
  ** There are several omap44xx changes queued up for -rc6
 
  ** There are several omap44xx changes queued up for -rc6
  
 +
== -rc6 ==
 +
* lots of (real) changes for omap, see http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc6 for details.
 +
* Rebooting is still broken, so beware of using omap2plus_defconfig without changes. (see -rc3 above)
 +
* patching is still neccessary to get dvi working
 +
* wlan and ethernet both seem to work as in -rc3, -rc4 and -rc5
 +
* i2c chararacter device driver is still broken, the patch below still applies cleanly and resolves the issue.
 +
 +
== -rc7 ==
 +
* No specific PandaBoard changes, but there was work done on /drivers/usb/host/ehci-omap.c
 +
* A new version of wlan firmware (see below) is available which might have working bluetooth.
 +
unfortunately, there is no BT support in the board file /arch/arm/mach-omap2/board-omap4panda.c
 +
* looks like some PandaBoard & OMAP4 specific changes queued up for the next .39-rcx (or maybe .40-rc1)
 +
 +
== Wlan ==
 
The proper firmware for wl12xx support is available from: git://git.kernel.org/pub/scm/linux/kernel/git/romieu/linux-firmware.git, just clone that repository and copy the ti-connectivity directory to /lib/firmare/.
 
The proper firmware for wl12xx support is available from: git://git.kernel.org/pub/scm/linux/kernel/git/romieu/linux-firmware.git, just clone that repository and copy the ti-connectivity directory to /lib/firmare/.
  
Line 43: Line 58:
 
  -rw-r--r--    1 default  default        912 Mar 29  2011 wl1271-nvs.bin
 
  -rw-r--r--    1 default  default        912 Mar 29  2011 wl1271-nvs.bin
  
Building 2.6.39-rc1, -rc3, or -rc5 is basically the same as [[Panda_How_to_kernel_2_6_38|How to build 2.6.38 kernel]], but of course you need the rc1/3/5 sources. The omap2plus_defconfig works, but does not enable anything interesting. [[Media:config.2.6.39-rc1|config.2.6.39-rc1]] enables USB, its' ethernet adapter, and wl12xx support. Or [[Media:config.2.6.39-rc3.1|config.2.6.39-rc3.1]] for -rc3.  [[Media:config.2.6.39-rc1.2|config.2.6.39-rc1.2]] enables USB, it's ethernet adapter, wl12xx support, and dvi support, for -rc3 use [[Media:config.2.6.39-rc3.3|config.2.6.39-rc3.3]] and [[Media:config.2.6.39-rc5.1|config.2.6.39-rc5.1]] for -rc5. However using either of those configs requires that the kernel sources be patched with [[Media:0001-omap4-pandaboard-fix-dvi-support.patch|0001-omap4-pandaboard-fix-dvi-support.patch]] The patch also provices panda_dvi_defconfig which just enables dvi. This patch applies to both -rc1, -rc3 and -rc5.
+
* Update 5/9/2011 A newer version is available from: git://git.kernel.org/pub/scm/linux/kernel/git/dwmw2/linux-firmware.git which includes a Bluetooth init script, which contains binary patches to the firmware that resides in ROM.
 +
* This OMAP35xx user guide has useful info: http://processors.wiki.ti.com/index.php/OMAP35x_Wireless_Connectivity_System_Test_Guidelines_User%27s_Guide
 +
* This OMAP35xx App note also is interesting: http://processors.wiki.ti.com/index.php/OMAP35x_Wireless_Connectivity_WLAN_Bluetooth_Coexistence_Application_Note
 +
* The firmware and wl1271 hardware is the same as on the PandaBoard, but there is no support in /arch/arm/mach-omap2/board-omap4panda.c for the gpio's that control BT_EN (GPIO46) or BT_WAKEUP (GPIO49), as well as the bt audio interface to MCBSP1. In addition, the latest Bluez (4.93) source for hidattach_ti.c still assumes that the firmware (and bt init script) are in /lib/firmware/ rather than in /lib/firmware/ti-connectivity/. The new firmware does work for wlan.
  
 +
# pwd
 +
/lib/firmware/ti-connectivity
 +
# ls -la
 +
total 1385
 +
drwxr-xr-x    2 root    root          1024 May  9  2011 .
 +
drwxr-xr-x    3 root    root          1024 Dec 31 17:36 ..
 +
-rw-r--r--    1 root    root        48909 May  9  2011 TIInit_7.2.31.bts
 +
-rw-r--r--    1 root    root        273252 May  9  2011 wl1271-fw-2.bin
 +
-rw-r--r--    1 root    root        272784 May  9  2011 wl1271-fw-ap.bin
 +
-rw-r--r--    1 root    root        271832 May  9  2011 wl1271-fw.bin
 +
-rwxr-xr-x    1 root    root          1113 May  9  2011 wl1271-nvs-example-wl128x.bin
 +
-rw-r--r--    1 root    root          912 May  9  2011 wl1271-nvs.bin
 +
-rw-r--r--    1 root    root        265196 May  9  2011 wl128x-fw-ap.bin
 +
-rwxr-xr-x    1 root    root        272748 May  9  2011 wl128x-fw.bin
 +
 +
 +
== Building ==
 +
Building 2.6.39-rc1, -rc3, -rc5, or -rc6 is basically the same as [[Panda_How_to_kernel_2_6_38|How to build 2.6.38 kernel]], but of course you need the rc1/3/5/6 sources. The omap2plus_defconfig works, but does not enable anything interesting. [[Media:config.2.6.39-rc1|config.2.6.39-rc1]] enables USB, its' ethernet adapter, and wl12xx support. Or [[Media:config.2.6.39-rc3.1|config.2.6.39-rc3.1]] for -rc3.  [[Media:config.2.6.39-rc1.2|config.2.6.39-rc1.2]] enables USB, it's ethernet adapter, wl12xx support, and dvi support, for -rc3 use [[Media:config.2.6.39-rc3.3|config.2.6.39-rc3.3]], [[Media:config.2.6.39-rc5.1|config.2.6.39-rc5.1]] for -rc5 and [[Media:config.2.6.39-rc6.1|config.2.6.39-rc6.1]] for -rc6. However using either of those configs requires that the kernel sources be patched with [[Media:0001-omap4-pandaboard-fix-dvi-support.patch|0001-omap4-pandaboard-fix-dvi-support.patch]] The patch also provices panda_dvi_defconfig which just enables dvi. This patch applies to both -rc1, -rc3, -rc5 and -rc6.
  
 +
=== DVI Patch ===
 
Apply it like so: (from inside the kernel sources directory)
 
Apply it like so: (from inside the kernel sources directory)
  
Line 63: Line 100:
  
  
 
After booting run fbtest to see a nice test pattern from the dvi port.
 
 
[[File:fbtest.jpg|240px]]
 
  
  
 +
== i2c character device driver ==
 
  Ever since 2.6.38, the i2c character device driver support from user space has been broken for OMAP44xx.
 
  Ever since 2.6.38, the i2c character device driver support from user space has been broken for OMAP44xx.
 
  * A fix has been submitted for the linux-omap-2.6 branch, but it may be a while till it gets into an -rcx.
 
  * A fix has been submitted for the linux-omap-2.6 branch, but it may be a while till it gets into an -rcx.
Line 74: Line 108:
 
  * A quick fix for this issue is available [[file:omap44xx-i2c-fix.patch|Available]]
 
  * A quick fix for this issue is available [[file:omap44xx-i2c-fix.patch|Available]]
  
 +
=== I2C Patch ===
 
Apply it like so: (from inside the kernel sources directory)
 
Apply it like so: (from inside the kernel sources directory)
  
Line 79: Line 114:
  
 
Then compile as above.
 
Then compile as above.
 +
 +
 +
== Testing ==
 +
 +
After booting run fbtest to see a nice test pattern from the dvi port.
 +
 +
[[File:fbtest.jpg|240px]]
  
 
Then you can run i2cdetect and the results should look like this:
 
Then you can run i2cdetect and the results should look like this:

Latest revision as of 14:27, 12 May 2011

Introduction

The merge window has closed and 2.6.39-rc1 has been released, There are many Pandaboard related changes, including HDMI, DVI and wl21xx support.

-rc1

* hdmi & dvi are broken due to some dss clocking issues, see: https://patchwork.kernel.org/patch/674062/ for details, a fix for dvi is available, see below.
* abe sound is not supported.
* Dave Anders patch to not configure the unused power regulators of VUSIM and VAUX1 is included.
* wl12xx support is working to the extent that one can associate with an access point, get an IP address and ping out to the internet.

-rc2

* Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code, so stay tuned for rc-3 in about a week or so. 
** looks like lots of interesting changes queued up for the next -rc so stay tuned..

-rc3

* Rebooting is broken (there was a post suggesting that it was broken in -rc2 as well) follow
this thread for more info: http://www.spinics.net/lists/linux-omap/msg49746.html.
** a simple fix is to turn off OMAP2 support, which is done in the .config below for -rc3.
* What at first looked like interesting changes to /arch/arm/mach-omap2/ /drivers/net/wireless/wl12xx/ /drivers/video/omap2/dss/ 
seemed to really be typo fixes in comments, Hopefully, some real fixes will be in -rc3.
* New in -rc3 is that the usb ethernet adapter appears as eth0 rather than usb0.

-rc4

* Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code, so stay tuned for rc-5 in about a week or so. 

-rc5

* Neither OMAP nor PandaBoaqrd changes, no other changes to wlan, dvi or hdmi code,
* There have been lots of changes in other parts of the kernel, so it's time to see if anything in -rc5 breaks pandaboard.
* Rebooting is still broken, so beware of using omap2plus_defconfig without changes. (see -rc3 above)
* patching is still neccessary to get dvi working
* wlan and ethernet both seem to work as in -rc3
** There are several omap44xx changes queued up for -rc6

-rc6

* lots of (real) changes for omap, see http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc6 for details.
* Rebooting is still broken, so beware of using omap2plus_defconfig without changes. (see -rc3 above)
* patching is still neccessary to get dvi working
* wlan and ethernet both seem to work as in -rc3, -rc4 and -rc5
* i2c chararacter device driver is still broken, the patch below still applies cleanly and resolves the issue.

-rc7

* No specific PandaBoard changes, but there was work done on /drivers/usb/host/ehci-omap.c
* A new version of wlan firmware (see below) is available which might have working bluetooth.
unfortunately, there is no BT support in the board file /arch/arm/mach-omap2/board-omap4panda.c
* looks like some PandaBoard & OMAP4 specific changes queued up for the next .39-rcx (or maybe .40-rc1)

Wlan

The proper firmware for wl12xx support is available from: git://git.kernel.org/pub/scm/linux/kernel/git/romieu/linux-firmware.git, just clone that repository and copy the ti-connectivity directory to /lib/firmare/.

# pwd
/lib/firmware/ti-connectivity
# ls -la
total 796
drwxr-xr-x    2 default  default       1024 Mar 29  2011 .
drwxr-xr-x    4 root     root          1024 Mar 29  2011 ..
-rw-r--r--    1 default  default     273040 Mar 29  2011 wl1271-fw-2.bin
-rw-r--r--    1 default  default     262356 Mar 29  2011 wl1271-fw-ap.bin
-rw-r--r--    1 default  default     271832 Mar 29  2011 wl1271-fw.bin
-rw-r--r--    1 default  default        912 Mar 29  2011 wl1271-nvs.bin
# pwd
/lib/firmware/ti-connectivity
# ls -la
total 1385
drwxr-xr-x    2 root     root          1024 May  9  2011 .
drwxr-xr-x    3 root     root          1024 Dec 31 17:36 ..
-rw-r--r--    1 root     root         48909 May  9  2011 TIInit_7.2.31.bts
-rw-r--r--    1 root     root        273252 May  9  2011 wl1271-fw-2.bin
-rw-r--r--    1 root     root        272784 May  9  2011 wl1271-fw-ap.bin
-rw-r--r--    1 root     root        271832 May  9  2011 wl1271-fw.bin
-rwxr-xr-x    1 root     root          1113 May  9  2011 wl1271-nvs-example-wl128x.bin
-rw-r--r--    1 root     root           912 May  9  2011 wl1271-nvs.bin
-rw-r--r--    1 root     root        265196 May  9  2011 wl128x-fw-ap.bin
-rwxr-xr-x    1 root     root        272748 May  9  2011 wl128x-fw.bin


Building

Building 2.6.39-rc1, -rc3, -rc5, or -rc6 is basically the same as How to build 2.6.38 kernel, but of course you need the rc1/3/5/6 sources. The omap2plus_defconfig works, but does not enable anything interesting. config.2.6.39-rc1 enables USB, its' ethernet adapter, and wl12xx support. Or config.2.6.39-rc3.1 for -rc3. config.2.6.39-rc1.2 enables USB, it's ethernet adapter, wl12xx support, and dvi support, for -rc3 use config.2.6.39-rc3.3, config.2.6.39-rc5.1 for -rc5 and config.2.6.39-rc6.1 for -rc6. However using either of those configs requires that the kernel sources be patched with 0001-omap4-pandaboard-fix-dvi-support.patch The patch also provices panda_dvi_defconfig which just enables dvi. This patch applies to both -rc1, -rc3, -rc5 and -rc6.

DVI Patch

Apply it like so: (from inside the kernel sources directory)

patch -p1 < 0001-omap4-pandaboard-fix-dvi-support.patch

Then use either of the above configs or

make ARCH=arm omap2plus_defconfig
        or
make ARCH=arm panda_dvi_defconfig

Then compile with

make ARCH=arm CROSS_COMPILE=Path_to_your/arm-2009q3/bin/arm-none-linux-gnueabi- uImage
     or
make ARCH=arm CROSS_COMPILE=Path_to_your/arm-2010q1/bin/arm-none-linux-gnueabi- uImage



i2c character device driver

Ever since 2.6.38, the i2c character device driver support from user space has been broken for OMAP44xx.
* A fix has been submitted for the linux-omap-2.6 branch, but it may be a while till it gets into an -rcx.
See http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=commit;h=39fe1a6fafe1e85c183379af9f3ceda7cd24bd65 for the commit.
* A quick fix for this issue is available File:Omap44xx-i2c-fix.patch

I2C Patch

Apply it like so: (from inside the kernel sources directory)

patch -p1 < Omap44xx-i2c-fix.patch

Then compile as above.


Testing

After booting run fbtest to see a nice test pattern from the dvi port.

Fbtest.jpg

Then you can run i2cdetect and the results should look like this:

# i2cdetect -y -r 1
    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- UU UU UU UU -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

More to come "real soon now"(tm)