On 09/27/2013 11:06 AM, Kumar Gala wrote: > > On Sep 17, 2013, at 2:30 PM, Suman Anna wrote: > >> HwSpinlock IP is present only on OMAP4 and other newer SoCs, >> which are all device-tree boot only. This patch adds the >> base support for parsing the DT nodes, and removes the code >> dealing with the traditional platform device instantiation. >> >> Signed-off-by: Suman Anna <s-anna@xxxxxx> >> --- >> .../devicetree/bindings/hwlock/omap-hwspinlock.txt | 31 +++++++++++ >> arch/arm/mach-omap2/Makefile | 3 -- >> arch/arm/mach-omap2/hwspinlock.c | 60 ---------------------- >> drivers/hwspinlock/omap_hwspinlock.c | 23 +++++++-- >> 4 files changed, 50 insertions(+), 67 deletions(-) >> create mode 100644 Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt >> delete mode 100644 arch/arm/mach-omap2/hwspinlock.c >> >> diff --git a/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt >> new file mode 100644 >> index 0000000..235b7c5 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt >> @@ -0,0 +1,31 @@ >> +OMAP4+ HwSpinlock Driver >> +======================== >> + >> +Required properties: >> +- compatible: Currently supports only "ti,omap4-hwspinlock" for >> + OMAP44xx, OMAP54xx, AM33xx, AM43xx, DRA7xx SoCs >> +- reg: Contains the hwspinlock register address range (base >> + address and length) >> +- ti,hwmods: Name of the hwmod associated with the hwspinlock device >> + >> +Common hwlock properties: >> +The following describes the usage of the common hwlock properties (defined in >> +Documentation/devicetree/bindings/hwlock/hwlock.txt) on OMAP. >> + >> +- hwlock-base-id: There are currently no OMAP SoCs with multiple >> + hwspinlock devices. The OMAP driver uses a default >> + base id value of 0 for the locks present within the >> + single hwspinlock device on all SoCs. >> +- hwlock-num-locks: This property is not required on OMAP SoCs, since the >> + number of locks present within a device can be deduced >> + from the SPINLOCK_SYSSTATUS device register. > > If you are going to be explicit about this properties, you should probably be a bit more clear about them NOT being in the OMAP dts because of the reasons you specify. You mean on the hwlock-base-id? I wanted to document how these properties (do not) apply for OMAP, I will revise the text to be a bit more explicit. Thanks for the review. regards Suman -- 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
