From mboxrd@z Thu Jan 1 00:00:00 1970 From: Magnus Damm Subject: [PATCH v3 01/09] devicetree: bindings: Renesas APMU and SMP Enable method Date: Thu, 17 Sep 2015 15:32:50 +0900 Message-ID: <20150917063250.26016.99820.sendpatchset@little-apple> References: <20150917063240.26016.93772.sendpatchset@little-apple> Return-path: In-Reply-To: <20150917063240.26016.93772.sendpatchset@little-apple> Sender: linux-sh-owner@vger.kernel.org To: linux-sh@vger.kernel.org Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com, keita.kobayashi.ym@renesas.com, horms@verge.net.au, geert@linux-m68k.org, laurent.pinchart@ideasonboard.com, Magnus Damm List-Id: devicetree@vger.kernel.org From: Magnus Damm Add DT binding documentation for the APMU hardware and add "renesas,apmu" to the list of enable methods for the ARM cpus. Signed-off-by: Magnus Damm --- Changes since V2: - s/Until/Unit/g - thanks Geert! Changes since V1: - None Documentation/devicetree/bindings/arm/cpus.txt | 1 Documentation/devicetree/bindings/power/renesas,apmu.txt | 31 ++++++++++++++ 2 files changed, 32 insertions(+) --- 0001/Documentation/devicetree/bindings/arm/cpus.txt +++ work/Documentation/devicetree/bindings/arm/cpus.txt 2015-09-16 20:32:46.710513000 +0900 @@ -198,6 +198,7 @@ nodes to be present and contain the prop "qcom,gcc-msm8660" "qcom,kpss-acc-v1" "qcom,kpss-acc-v2" + "renesas,apmu" "rockchip,rk3066-smp" "ste,dbx500-smp" --- /dev/null +++ work/Documentation/devicetree/bindings/power/renesas,apmu.txt 2015-09-16 20:42:09.000513000 +0900 @@ -0,0 +1,31 @@ +DT bindings for the Renesas Advanced Power Management Unit + +Renesas R-Car line of SoCs utilize one or more APMU hardware units +for CPU core power domain control including SMP boot and CPU Hotplug. + +Required properties: + +- compatible: Should be "renesas,apmu-", "renesas,apmu" as fallback. + Examples with soctypes are: + - "renesas,apmu-r8a7790" (R-Car H2) + - "renesas,apmu-r8a7791" (R-Car M2-W) + - "renesas,apmu-r8a7792" (R-Car V2H) + - "renesas,apmu-r8a7793" (R-Car M2-N) + - "renesas,apmu-r8a7794" (R-Car E2) + +- reg: Base address and length of the I/O registers used by the APMU. + +- cpus: This node contains a list of CPU cores, which should match the order + of CPU cores used by the WUPCR and PSTR reigsters in the Advanced Power + Management Unit section of the device's datasheet. + + +Example: + +This shows the r8a7791 APMU that can control CPU0 and CPU1. + + apmu@e6152000 { + compatible = "renesas,apmu-r8a7791", "renesas,apmu"; + reg = <0 0xe6152000 0 0x188>; + cpus = <&cpu0 &cpu1>; + };