On 2012-02-06 16:45, Tony Lindgren wrote:
* Gary Thomas<gary@xxxxxxxxxxxx> [120206 09:14]:
I have an OMAP3530 (DM3730) board which uses a very simple
power controller (TPS65910A1). This controller does not
support many of the power supplies, etc, that are common
on the TWL4030 and similar devices.
I'm using Linux 3.0. How can I remove the reliance on the
TWL devices? Simply disabling PM in my configuration isn't
enough - that generates a bunch of undefined references.
Also, there are many places where power supply stuff is
accessed, outside of PM, in particular DSS2 which has a
terrible time. Here's what I get when I disabled PM and
REGULATOR support:
Yes it should be possible to support other PMIC other than
TWL chips too.. What you're seeing is a bug.
This will be a bit more of a change than just another PMIC since
this device isn't much of a power manager (other than at the very
lowest level to handle power up sequencing, etc). It's good to
hear that it _should_ work and I look forward to ideas on how
to _make_ it work.
For now, I've left PM and REGULATOR enabled so I can at least
build the kernel and with just a few changes, I can get the
kernel to boot to a prompt. I do need to work out the uglyness
of what I've had to do though :-)
Thanks
arch/arm/mach-omap2/built-in.o: In function `omap_set_pwrdm_state':
/local/linux-3.0/arch/arm/mach-omap2/pm.c:122: undefined reference to `pwrdm_read_next_pwrst'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:126: undefined reference to `pwrdm_read_pwrst'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:127: undefined reference to `pwrdm_read_pwrst'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:133: undefined reference to `pwrdm_wait_transition'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:138: undefined reference to `pwrdm_set_next_pwrst'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:153: undefined reference to `pwrdm_set_lowpwrstchange'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:159: undefined reference to `pwrdm_wait_transition'
/local/linux-3.0/arch/arm/mach-omap2/pm.c:160: undefined reference to `pwrdm_state_switch'
arch/arm/mach-omap2/built-in.o: In function `omap_hwmod_get_context_loss_count':
/local/linux-3.0/arch/arm/mach-omap2/omap_hwmod.c:2638: undefined reference to `pwrdm_get_context_loss_count'
arch/arm/mach-omap2/built-in.o: In function `_clkdm_clk_hwmod_disable':
/local/linux-3.0/arch/arm/mach-omap2/clockdomain.c:895: undefined reference to `pwrdm_clkdm_state_switch'
arch/arm/mach-omap2/built-in.o: In function `clkdm_allow_idle':
/local/linux-3.0/arch/arm/mach-omap2/clockdomain.c:786: undefined reference to `pwrdm_clkdm_state_switch'
arch/arm/mach-omap2/built-in.o: In function `_clkdm_clk_hwmod_enable':
/local/linux-3.0/arch/arm/mach-omap2/clockdomain.c:869: undefined reference to `pwrdm_wait_transition'
/local/linux-3.0/arch/arm/mach-omap2/clockdomain.c:870: undefined reference to `pwrdm_clkdm_state_switch'
arch/arm/mach-omap2/built-in.o: In function `_clkdm_register':
/local/linux-3.0/arch/arm/mach-omap2/clockdomain.c:79: undefined reference to `pwrdm_lookup'
/local/linux-3.0/arch/arm/mach-omap2/clockdomain.c:93: undefined reference to `pwrdm_add_clkdm'
arch/arm/mach-omap2/built-in.o: In function `omap2_clk_disable_unused':
/local/linux-3.0/arch/arm/mach-omap2/clock.c:442: undefined reference to `pwrdm_clkdm_state_switch'
arch/arm/mach-omap2/built-in.o: In function `omap2_init_common_infrastructure':
/local/linux-3.0/arch/arm/mach-omap2/io.c:355: undefined reference to `omap3xxx_voltagedomains_init'
/local/linux-3.0/arch/arm/mach-omap2/io.c:356: undefined reference to `omap3xxx_powerdomains_init'
Any ideas? I'd like to keep my changes to the kernel to
a minimum,
Sounds like there should be empty functions for the prdm_* functions
in this case. Kevin might have some patches to fix this already.
Regards,
Tony
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
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