Hi Tony, On Wednesday 04 December 2013 10:24:37 Tony Lindgren wrote: > * Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> [131204 09:59]: > > Hi Tony, > > > > On Wednesday 04 December 2013 09:28:53 Tony Lindgren wrote: > > > * Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> [131204 09:12]: > > > > The omap3_pmx_core pinmux device in the device tree handles the system > > > > controller module (SCM) PADCONFS fonction. Its control registers are > > > > split in two distinct areas, with other SCM registers in-between. > > > > Those other registers can't thus be requested by other drivers as the > > > > memory region gets reserved by the pinmux driver. > > > > > > > > Split the omap3_pmx_core device tree node in two for the two memory > > > > regions. > > > > > > > > Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > > > > --- > > > > > > > > arch/arm/boot/dts/omap3-beagle-xm.dts | 45 ++++++++++++++++++++------ > > > > arch/arm/boot/dts/omap3-beagle.dts | 28 +++++++++++++++------- > > > > arch/arm/boot/dts/omap3-igep0020.dts | 26 ++++++++++---------- > > > > arch/arm/boot/dts/omap3-zoom3.dts | 19 ++++++++++----- > > > > arch/arm/boot/dts/omap3.dtsi | 13 +++++++++- > > > > 5 files changed, 95 insertions(+), 36 deletions(-) > > > > > > > > While working on the OMAP3 ISP driver I've run into a failure to > > > > request a memory region already requested by the pinctrl-single > > > > driver. This patch is an attempt to fix the problem. An alternative > > > > approach would be to support multiple reg values in the pinctrl-single > > > > driver, but that might not be much cleaner. I'm open to suggestions. > > > > > > Makes sense to me to split it into two, we can save some memory that way > > > too. > > > > > > It should not cause problems with the wake-up interrupts either as we're > > > already using a single chained wake-up interrupt between core and wkup > > > pins. > > > > > > Do you have some perl or sed script to look for and convert the core2 > > > registers? Or do we just not have that many of them defined yet? > > > > This patch should cover all the ones we have in mainline. As this is an > > RFC I've performed the conversion manually. > > OK. I wonder if we should add something like this to make it easier to > use the padconf values from the TRM: > > #define OMAP_IOPAD_OFFSET(pa, offset) ((pa) & 0xffff) - (offset)) > > #define OMAP2_CORE_IOPAD(pa, val) (OMAP_IOPAD_OFFSET((pa), 0x0030) (val)) > #define OMAP3_CORE1_IOPAD(pa, val) OMAP2_CORE_IOPAD((pa), (val)) > #define OMAP3_CORE2_IOPAD(pa, val) (OMAP_IOPAD_OFFSET((pa), 0x05a0) (val)) > #define OMAP4_CORE_IOPAD(pa, val) (OMAP_IOPAD_OFFSET((pa), 0x0040) (val)) > #define OMAP4_WKUP_IOPAD(pa, val) (OMAP_IOPAD_OFFSET((pa), 0xe040) (val)) > #define OMAP5_CORE_IOPAD(pa, val) (OMAP_IOPAD_OFFSET((pa), 0x0840) (val)) > #define OMAP5_WKUP_IOPAD(pa, val) (OMAP_IOPAD_OFFSET((pa), 0xc850) (val)) > ... > > Then we would have entries like: > > pinctrl-single,pins = < > OMAP3_CORE1_IOPAD(0x158, PIN_INPUT_PULLUP | MUX_MODE0) > ... > >; > > instead of: > > pinctrl-single,pins = < > 0x128 (PIN_INPUT_PULLUP | MUX_MODE0) > ... > >; That's a good idea, it would be much more readable. Would you like to submit a patch ? Should I rebase my patch on top of that, or the other way around ? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
