linux/arch/arm/plat-omap
Paul Walmsley 5fb3d522ef ARM: OMAP2+: hwmod: add flag to prevent hwmod code from touching IP block during init
Add HWMOD_EXT_OPT_MAIN_CLK flag to indicate that this IP block is
dependent on an off-chip functional clock that is not guaranteed to be
present during initialization.  IP blocks marked with this flag are
left in the INITIALIZED state during kernel init.

This is a workaround for a hardware problem.  It should be possible to
guarantee that at least one clock source will be present and active
for any IP block's main functional clock.  This ensures that the hwmod
code can enable and reset the IP block.  Resetting the IP block during
kernel init prevents any bogus bootloader, ROM code, or previous OS
configuration from affecting the kernel.  Hopefully a clock
multiplexer can be added on future SoCs.

N.B., at some point in the future, it should be possible to query the
clock framework for this type of information.  Then this flag should
no longer be needed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
2012-10-31 05:02:31 -06:00
..
include/plat ARM: OMAP2+: hwmod: add flag to prevent hwmod code from touching IP block during init 2012-10-31 05:02:31 -06:00
clock.c ARM: OMAP2+: hwmod: get rid of all omap_clk_get_by_name usage 2012-09-22 10:50:01 -06:00
common.c ARM: omap: move platform_data definitions 2012-09-19 17:39:52 +02:00
counter_32k.c ARM: OMAP: counter: add locking to read_persistent_clock 2012-10-08 14:01:12 -07:00
debug-devices.c ARM: OMAP: resolve sparse warning concerning debug_card_init() 2012-10-16 14:05:50 -07:00
debug-leds.c ARM: soc: driver specific changes 2012-10-01 18:46:13 -07:00
dma.c These fixes are needed to fix non-omap build breakage for 2012-09-23 17:15:44 -06:00
dmtimer.c ARM: OMAP: dmtimers: Fix locking issue in omap_dm_timer_request*() 2012-08-13 06:23:16 -07:00
fb.c ARM: OMAP1: move lcd pdata out of arch/arm/* 2012-09-10 16:34:00 -07:00
i2c.c Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux 2012-10-11 10:27:51 +09:00
Kconfig ARM: OMAP2+: Fix location of select PINCTRL 2012-10-22 13:37:34 -07:00
mailbox.c workqueue: deprecate flush[_delayed]_work_sync() 2012-08-20 14:51:24 -07:00
Makefile ARM: OMAP1: Make plat/mux.h omap1 only 2012-09-20 14:54:57 -07:00
omap_device.c OMAP PM related fixes for v3.7-rc 2012-10-08 15:57:41 -07:00
omap-pm-noop.c arch/arm/plat-omap/omap-pm-noop.c: Remove unecessary semicolon 2012-10-08 18:09:30 -07:00
sram.c These fixes are needed to fix non-omap build breakage for 2012-09-23 17:15:44 -06:00
sram.h