Unknown user в 08:13, 15 октября 2014

2014-10-15T08:13:08Z

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=Repositories=
https://github.com/ac100-ru/u-boot-ac100-exp/tree/tegra-master-exp-android
https://github.com/ac100-ru/android_kernel_asus_grouper/tree/cm-11.0-ac100-nvec-test

=Uboot suspend=
Signs of suspend in repo https://github.com/ac100-ru/u-boot-ac100-exp.git

<pre>
include/configs/seaboard.h
/* LP0 suspend / resume */
#define CONFIG_TEGRA_LP0
#define CONFIG_AES
#define CONFIG_TEGRA_PMU
#define CONFIG_TPS6586X_POWER
#define CONFIG_TEGRA_CLOCK_SCALING
</pre>

<pre>
board/nvidia/common/board.c
CONFIG_TEGRA_PMU
CONFIG_TEGRA_CLOCK_SCALING
CONFIG_TEGRA_LP0
</pre>

=Questionable=
<pre>
/* ATAGs support for bootm/bootz */
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_CMDLINE_TAG
#define CONFIG_INITRD_TAG
</pre>

http://lists.denx.de/pipermail/u-boot/2012-May/125434.html

==Cmdline==

Kernel 2.6.x
<pre>
lp0_vec=0x2000@0x1c29e000
</pre>

U-boot
include/configs/tegra20-common.h
<pre>
#ifdef CONFIG_TEGRA_LP0
#define TEGRA_LP0_ADDR 0x1C406000
#define TEGRA_LP0_SIZE 0x2000
#define TEGRA_LP0_VEC \
"lp0_vec=" __stringify(TEGRA_LP0_SIZE) \
"@" __stringify(TEGRA_LP0_ADDR) " "
#else
#define TEGRA_LP0_VEC
#endif
</pre>

=Notes=

* LP0 Suspend attempt with AC connected and without are different
** Without AC ac100 sometimes can enter sleep ( power led begin to blink)
** Without AC sleep starts faster
** Without AC console log sometimes shorter that on AC http://pastebin.com/LGnxztQ8
<pre>
[ 250.862403] suspend: enter suspend
[ 252.957243] WARNING: at
../../../../../../kernel/toshiba/grouper/drivers/regulator/core.c:1448
regulator_disable+0x160/0x248()
unbalanced disables for REG-LDO_5
[ 255.320007] power_suspend_late return -11
</pre>
''' Without AC nvec sometimes post errors during suspend process http://pastebin.com/K6vrNfjX
<pre>
[ 229.952750] suspend: abort suspend
[ 234.406984] nvec nvec.2: timeout waiting for ec transfer
[ 290.042915] suspend: enter suspend
[ 291.501312] WARNING: at
../../../../../../kernel/toshiba/grouper/arch/arm/mach-tegra/clock.c:289
clk_disable+0x2c/0x64()
[ 291.517281] Attempting to disable clock usbd.sclk with refcnt 0
[ 291.892988] WARNING: at
../../../../../../kernel/toshiba/grouper/arch/arm/mach-tegra/clock.c:289
clk_disable+0x2c/0x64()
[ 291.908825] Attempting to disable clock usbd.emc with refcnt 0
[ 297.060477] BUG: sleeping function called from invalid context at
../../../../../../kernel/toshiba/grouper/kernel/mutex.c:271
</pre>

=Current problems=
* tegra_init_suspend report that lp0_vec missing and disables LP0
<pre>
[ 1.835402] tegra_init_emc: Hynix 333MHz memory found
[ 1.850025] tegra_init_suspend: Suspend mode LP0 requested, no lp0_vec provided by bootlader -- disabling LP0
[ 1.864331] Selecting UARTA as the debug console
</pre>
''' cmdline with u-boot lp0_vec settings fixes this message. This parameter is obsolete (https://lists.launchpad.net/ac100/msg00312.html) because in modern kernels it is passed using device tree (see arch/arm/mach-tegra/pmc.c).
** log http://pastebin.com/E7urrTwY
<pre>
[ 4.698240] calling nvhost_mod_init+0x0/0x24 @ 1
[ 4.706038] BUG: key cde4500c not in .data!
[ 168.939764] WARNING: at
../../../../../../kernel/toshiba/grouper/drivers/regulator/core.c:1448
regulator_disable+0x160/0x248()
[ 168.954857] unbalanced disables for REG-LDO_5
[ 171.470817] BUG: sleeping function called from invalid context at
../../../../../../kernel/toshiba/grouper/kernel/mutex.c:271
[ 171.789731] Entering suspend state LP0
</pre>

Uboot suspend - История изменений

Unknown user в 08:13, 15 октября 2014