On 5/28/15 4:19 PM, Alan Tull wrote: > Add code that requests that the sdr controller go into > self-refresh mode. This code is run from ocram. > > Suspend-to-RAM and EDAC support are mutually exclusive on > SOCFPGA. If the EDAC is enabled, it will prevent the > platform from going into suspend. > > Example of how to request to suspend to ram: > $ echo enabled > \ > /sys/devices/soc/ffc02000.serial0/tty/ttyS0/power/wakeup > > $ echo -n mem > /sys/power/state > > Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> > Cc: Pavel Machek <pavel@xxxxxxx> > Cc: Arnd Bergmann <arnd@xxxxxxxx> > Cc: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx> > Cc: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx> > --- > v2: use Generic on-chip SRAM driver to allocate ocram > rm fncpy_align since generic allocator handles alignment > check __arm_ioremap_exec return code > check for NULL pointers > add a comment regarding sdram controller configuration > v3: fix renamed #define > propagate socfpga_setup_ocram_self_refresh error code > v4: Kconfig: don't need to select GENERIC_ALLOCATER > add CONFIG_SOCFPGA_SUSPEND > make s2r and EDAC support mutually exclusive > socfpga.c: add sdr_ctl_base_addr > return error if ocram not available in device tree > update copyright years > v5: remove compile time dependency > edac driver will prevent suspend > don't configure scu standby mode; done in enable_scu(). > fix comments about required sdram controller configuration > --- > arch/arm/mach-socfpga/Kconfig | 10 ++- > arch/arm/mach-socfpga/Makefile | 1 + > arch/arm/mach-socfpga/core.h | 6 +- > arch/arm/mach-socfpga/pm.c | 149 ++++++++++++++++++++++++++++++++++ > arch/arm/mach-socfpga/self-refresh.S | 136 +++++++++++++++++++++++++++++++ > arch/arm/mach-socfpga/socfpga.c | 6 +- > drivers/edac/altera_edac.c | 20 +++++ > 7 files changed, 325 insertions(+), 3 deletions(-) > create mode 100644 arch/arm/mach-socfpga/pm.c > create mode 100644 arch/arm/mach-socfpga/self-refresh.S > Which branch are you basing this patch on? I got a trivial patch conflict in Kconfig when I applied to arm-soc/for-next and v4.1-rc5. Also, I'm getting these sparse warnings: arch/arm/mach-socfpga/pm.c:86:25: warning: incorrect type in argument 1 (different address spaces) arch/arm/mach-socfpga/pm.c:86:25: expected void *<noident> arch/arm/mach-socfpga/pm.c:86:25: got void [noderef] <asn:2>*[assigned] suspend_ocram_base arch/arm/mach-socfpga/pm.c:108:52: warning: cast removes address space of expression Dinh -- 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
