3 Commits

Author	SHA1	Message	Date
Viresh Kumar	204c881e96	dt-bindings: arm: Explain capacities-dmips-mhz calculations in example ... The example contains two values for the capacity currently, 446 in text and 578 in code. The numbers are all correct but can confuse some of the readers. This patch tries to explain how the numbers are calculated to avoid same confusion going forward. Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>	2018-10-30 17:14:36 -05:00
Amit Kucheria	e9880240e4	arm64: dts: Fix various entry-method properties to reflect documentation ... The idle-states binding documentation[1] mentions that the 'entry-method' property is required on 64-bit platforms and must be set to "psci". commit a13f18f59d ("Documentation: arm: Fix typo in the idle-states bindings examples") attempted to fix this earlier but clearly more is needed. Fix the cpu-capacity.txt documentation that uses the incorrect value so we don't get copy-paste errors like these. Clarify the language in idle-states.txt by removing the reference to the psci bindings that might be causing this confusion. Finally, fix devicetrees of various boards to reflect current documentation. [1] Documentation/devicetree/bindings/arm/idle-states.txt (see idle-states node) Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Li Yang <leoyang.li@nxp.com> Signed-off-by: Olof Johansson <olof@lixom.net>	2018-08-24 08:50:02 -07:00
Juri Lelli	de42fe116d	Documentation: arm: define DT cpu capacity-dmips-mhz bindings ... ARM systems may be configured to have cpus with different power/performance characteristics within the same chip. In this case, additional information has to be made available to the kernel (the scheduler in particular) for it to be aware of such differences and take decisions accordingly. Therefore, this patch aims at standardizing cpu capacities device tree bindings for ARM platforms. Bindings define cpu capacity-dmips-mhz parameter, to allow operating systems to retrieve such information from the device tree and initialize related kernel structures, paving the way for common code in the kernel to deal with heterogeneity. Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Olof Johansson <olof@lixom.net> Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: devicetree@vger.kernel.org Signed-off-by: Juri Lelli <juri.lelli@arm.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>	2016-11-07 18:15:03 +00:00