From: Stephen Boyd <sboyd@codeaurora.org> To: linux-arm-kernel@lists.infradead.org Cc: Rohit Vaswani <rvaswani@codeaurora.org>, David Brown <davidb@codeaurora.org>, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Kumar Gala <galak@codeaurora.org>, devicetree@vger.kernel.org, Mark Rutland <mark.rutland@arm.com>, Arnd Bergmann <arnd@arndb.de>, Russell King <linux@arm.linux.org.uk> Subject: [PATCH v2 1/9] devicetree: bindings: Document Krait/Scorpion cpus and enable-method Date: Mon, 23 Dec 2013 16:39:45 -0800 [thread overview] Message-ID: <1387845593-10050-2-git-send-email-sboyd@codeaurora.org> (raw) In-Reply-To: <1387845593-10050-1-git-send-email-sboyd@codeaurora.org> From: Rohit Vaswani <rvaswani@codeaurora.org> Scorpion and Krait don't use the spin-table enable-method. Instead they rely on mmio register accesses to enable power and clocks to bring CPUs out of reset. Document their enable-methods. Cc: <devicetree@vger.kernel.org> Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org> [sboyd: Split off into separate patch, renamed methods to match compatible nodes] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> --- Documentation/devicetree/bindings/arm/cpus.txt | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 9130435..333f4ae 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -180,7 +180,11 @@ nodes to be present and contain the properties described below. be one of: "spin-table" "psci" - # On ARM 32-bit systems this property is optional. + # On ARM 32-bit systems this property is optional and + can be one of: + "qcom,gcc-msm8660" + "qcom,kpss-acc-v1" + "qcom,kpss-acc-v2" - cpu-release-addr Usage: required for systems that have an "enable-method" @@ -191,6 +195,21 @@ nodes to be present and contain the properties described below. property identifying a 64-bit zero-initialised memory location. + - qcom,saw + Usage: required for systems that have an "enable-method" + property value of "qcom,kpss-acc-v1" or + "qcom,kpss-acc-v2" + Value type: <phandle> + Definition: Specifies the SAW[1] node associated with this CPU. + + - qcom,acc + Usage: required for systems that have an "enable-method" + property value of "qcom,kpss-acc-v1" or + "qcom,kpss-acc-v2" + Value type: <phandle> + Definition: Specifies the ACC[2] node associated with this CPU. + + Example 1 (dual-cluster big.LITTLE system 32-bit): cpus { @@ -382,3 +401,7 @@ cpus { cpu-release-addr = <0 0x20000000>; }; }; + +-- +[1] arm/msm/qcom,saw2.txt +[2] arm/msm/qcom,kpss-acc.txt -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation
WARNING: multiple messages have this Message-ID (diff)
From: sboyd@codeaurora.org (Stephen Boyd) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/9] devicetree: bindings: Document Krait/Scorpion cpus and enable-method Date: Mon, 23 Dec 2013 16:39:45 -0800 [thread overview] Message-ID: <1387845593-10050-2-git-send-email-sboyd@codeaurora.org> (raw) In-Reply-To: <1387845593-10050-1-git-send-email-sboyd@codeaurora.org> From: Rohit Vaswani <rvaswani@codeaurora.org> Scorpion and Krait don't use the spin-table enable-method. Instead they rely on mmio register accesses to enable power and clocks to bring CPUs out of reset. Document their enable-methods. Cc: <devicetree@vger.kernel.org> Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org> [sboyd: Split off into separate patch, renamed methods to match compatible nodes] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> --- Documentation/devicetree/bindings/arm/cpus.txt | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 9130435..333f4ae 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -180,7 +180,11 @@ nodes to be present and contain the properties described below. be one of: "spin-table" "psci" - # On ARM 32-bit systems this property is optional. + # On ARM 32-bit systems this property is optional and + can be one of: + "qcom,gcc-msm8660" + "qcom,kpss-acc-v1" + "qcom,kpss-acc-v2" - cpu-release-addr Usage: required for systems that have an "enable-method" @@ -191,6 +195,21 @@ nodes to be present and contain the properties described below. property identifying a 64-bit zero-initialised memory location. + - qcom,saw + Usage: required for systems that have an "enable-method" + property value of "qcom,kpss-acc-v1" or + "qcom,kpss-acc-v2" + Value type: <phandle> + Definition: Specifies the SAW[1] node associated with this CPU. + + - qcom,acc + Usage: required for systems that have an "enable-method" + property value of "qcom,kpss-acc-v1" or + "qcom,kpss-acc-v2" + Value type: <phandle> + Definition: Specifies the ACC[2] node associated with this CPU. + + Example 1 (dual-cluster big.LITTLE system 32-bit): cpus { @@ -382,3 +401,7 @@ cpus { cpu-release-addr = <0 0x20000000>; }; }; + +-- +[1] arm/msm/qcom,saw2.txt +[2] arm/msm/qcom,kpss-acc.txt -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2013-12-24 0:39 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-12-24 0:39 [PATCH v2 0/9] CPU enable method based SMP/hotplug + MSM conversion Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd [this message] 2013-12-24 0:39 ` [PATCH v2 1/9] devicetree: bindings: Document Krait/Scorpion cpus and enable-method Stephen Boyd [not found] ` <1387845593-10050-2-git-send-email-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2014-01-08 14:21 ` Mark Rutland 2014-01-08 14:21 ` Mark Rutland 2014-01-08 14:21 ` Mark Rutland 2014-01-08 23:21 ` Stephen Boyd 2014-01-08 23:21 ` Stephen Boyd 2014-01-08 23:21 ` Stephen Boyd 2013-12-24 0:39 ` [PATCH v2 2/9] devicetree: bindings: Document qcom,kpss-acc Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2014-01-08 14:25 ` Mark Rutland 2014-01-08 14:25 ` Mark Rutland 2014-01-08 14:25 ` Mark Rutland 2014-01-08 14:32 ` Mark Rutland 2014-01-08 14:32 ` Mark Rutland 2014-01-08 14:32 ` Mark Rutland 2014-01-08 23:02 ` Stephen Boyd 2014-01-08 23:02 ` Stephen Boyd 2014-01-08 23:02 ` Stephen Boyd 2013-12-24 0:39 ` [PATCH v2 3/9] devicetree: bindings: Document qcom,saw2 node Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2014-01-08 14:36 ` Mark Rutland 2014-01-08 14:36 ` Mark Rutland 2014-01-08 14:36 ` Mark Rutland 2014-01-08 15:21 ` Mark Rutland 2014-01-08 15:21 ` Mark Rutland 2014-01-08 15:21 ` Mark Rutland 2013-12-24 0:39 ` [PATCH v2 4/9] ARM: Introduce CPU_METHOD_OF_DECLARE() for cpu hotplug/smp Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2014-01-08 15:06 ` Mark Rutland 2014-01-08 15:06 ` Mark Rutland 2014-01-08 15:06 ` Mark Rutland 2013-12-24 0:39 ` [PATCH v2 5/9] ARM: msm: Remove pen_release usage Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2013-12-24 0:39 ` [PATCH v2 6/9] ARM: msm: Re-organize platsmp to make it extensible Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2013-12-24 0:39 ` [PATCH v2 7/9] ARM: msm: Add SMP support for KPSSv1 Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2013-12-24 0:39 ` [PATCH v2 8/9] ARM: msm: Add SMP support for KPSSv2 Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd 2013-12-24 0:39 ` [PATCH v2 9/9] ARM: dts: msm: Add nodes necessary for SMP boot Stephen Boyd 2013-12-24 0:39 ` Stephen Boyd [not found] ` <1387845593-10050-1-git-send-email-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2014-01-06 22:19 ` [PATCH v2 0/9] CPU enable method based SMP/hotplug + MSM conversion Stephen Boyd 2014-01-06 22:19 ` Stephen Boyd 2014-01-06 22:19 ` Stephen Boyd 2014-01-08 15:20 ` Mark Rutland 2014-01-08 15:20 ` Mark Rutland 2014-01-08 15:20 ` Mark Rutland 2014-01-08 21:37 ` Arnd Bergmann 2014-01-08 21:37 ` Arnd Bergmann 2014-01-09 1:50 ` Stephen Boyd 2014-01-09 1:50 ` Stephen Boyd [not found] ` <52CE005A.3070802-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2014-01-23 22:04 ` Kumar Gala 2014-01-23 22:04 ` Kumar Gala 2014-01-23 22:04 ` Kumar Gala 2014-02-07 21:13 ` [PATCH v2 10/9] ARM: msm: Remove board-dt.c Stephen Boyd 2014-02-07 21:13 ` Stephen Boyd
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