On Tue, Jan 24, 2012 at 07:54:08PM -0600, Matt Sealey wrote:

Hi Arnd/RMK/Sascha,

We're trying to bring up a good batch of drivers here for MX51 and
EfikaMX systems and noticed that the released 3.2 kernel doesn't
include the common clock stuff that all the other platforms seem to be
using.

As far as I know, it still isn't ready (if it was, surely it would've
been merged?)

Grepping for clk_prepare() it looks like very few people have converted
over to this - it's just the AMBA stuff, a few bits of OMAP and MXS.
So even if the common clock stuff comes in, almost nothing will be able
to use it:

arch/arm/common/sa1111.c
arch/arm/common/timer-sp.c
arch/arm/mach-omap2/clock2xxx.c
arch/arm/mach-omap2/clock.h
arch/arm/mach-omap2/prcm.c
arch/arm/mach-omap2/clock2430_data.c
arch/arm/mach-omap2/clock2xxx.h
arch/arm/mach-omap2/clock2420_data.c
arch/arm/mach-mxs/clock-mx23.c
arch/arm/mach-mxs/clock.c
arch/arm/mach-mxs/timer.c
arch/arm/mach-mxs/system.c
arch/arm/mach-mxs/clock-mx28.c
arch/arm/mach-mxs/mach-mx28evk.c
arch/arm/kernel/smp_twd.c
drivers/gpio/gpio-pxa.c
drivers/tty/serial/amba-pl011.c
drivers/tty/serial/mxs-auart.c
drivers/tty/serial/amba-pl010.c
drivers/amba/bus.c
drivers/net/ethernet/freescale/fec.c
drivers/net/can/flexcan.c
drivers/video/omap2/dss/dsi.c
drivers/video/amba-clcd.c
drivers/video/mxsfb.c
drivers/staging/tidspbridge/include/dspbridge/clk.h
drivers/staging/tidspbridge/core/dsp-clock.c
drivers/spi/spi-pl022.c
drivers/mmc/host/mmci.c
drivers/mmc/host/mxs-mmc.c
drivers/dma/mxs-dma.c
drivers/mtd/nand/gpmi-nand/gpmi-lib.c

My conclusion, therefore, is that there's very little actual interest
amongst the ARM community to move towards a common clk API.

I'm rather disappointed by that, and have been wondering for some time
why I wasted my time over the clk_prepare() stuff, and wondering why the
hell I bothered putting it in mainline.  I must have been under the
mistaken impression that this is something people wanted.  Obviously not.

There's a good saying here: actions speak louder than words.  The action
here is the lack of patches from platform maintainers.  That definitely
shouts.

As a result of the lack of motivation by others over this, I've lost
interest in it.  Sorry.