From: "jinkun.hong" <jinkun.hong@rock-chips.com> To: linux-rockchip@lists.infradead.org, Heiko Stuebner <heiko@sntech.de>, Russell King <linux@arm.linux.org.uk>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Grant Likely <grant.likely@linaro.org>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Randy Dunlap <rdunlap@infradead.org>, linux-doc@vger.kernel.org Cc: "jinkun.hong" <jinkun.hong@rock-chips.com>, Jack Dai <jack.dai@rock-chips.com>, Caesar Wang <caesar.wang@rock-chips.com> Subject: [PATCH 2/3] dt-bindings: add document of Rockchip power domain Date: Mon, 22 Sep 2014 19:55:15 -0700 [thread overview] Message-ID: <1411440916-6830-3-git-send-email-jinkun.hong@rock-chips.com> (raw) In-Reply-To: <1411440916-6830-1-git-send-email-jinkun.hong@rock-chips.com> From: "jinkun.hong" <jinkun.hong@rock-chips.com> Signed-off-by: Jack Dai <jack.dai@rock-chips.com> Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> Signed-off-by: jinkun.hong <jinkun.hong@rock-chips.com> --- .../bindings/arm/rockchip/power_domain.txt | 48 ++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/rockchip/power_domain.txt diff --git a/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt b/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt new file mode 100644 index 0000000..2a80d3f --- /dev/null +++ b/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt @@ -0,0 +1,48 @@ +* Rockchip Power Domains + +Rockchip processors include support for multiple power domains which can be +powered up/down by software based on different application scenes to save power. + +Required properties for power domain controller: +- compatible: should be one of the following. + * rockchip,rk3288-power-controller - for rk3288 type power domain. +- #power-domain-cells: Number of cells in a power-domain specifier. + should be 1. +- rockchip,pmu: phandle referencing a syscon providing the pmu registers +- #address-cells: should be 1. +- #size-cells: should be 0. + +Required properties for power domain sub nodes: +- reg: index of the power domain, should use macros in: + * include/dt-bindings/power-domain/rk3288.h - for rk3288 type power domain. +- clocks: phandles to clocks which need to be enabled while power domain + switches state. + +Example: + + power: power-controller { + compatible = "rockchip,rk3288-power-controller"; + #power-domain-cells = <1>; + rockchip,pmu = <&pmu>; + #address-cells = <1>; + #size-cells = <0>; + + pd_gpu { + reg = <RK3288_PD_GPU>; + clocks = <&cru ACLK_GPU>; + }; + }; + +Node of a device using power domains must have a power-domains property, +containing a phandle to the power device node and an index specifying which +power domain to use. +The index should use macros in: + * include/dt-bindings/power-domain/rk3288.h - for rk3288 type power domain. + +Example of the node using power domain: + + node { + /* ... */ + power-domains = <&power RK3288_PD_GPU>; + /* ... */ + }; -- 1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: jinkun.hong@rock-chips.com (jinkun.hong) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/3] dt-bindings: add document of Rockchip power domain Date: Mon, 22 Sep 2014 19:55:15 -0700 [thread overview] Message-ID: <1411440916-6830-3-git-send-email-jinkun.hong@rock-chips.com> (raw) In-Reply-To: <1411440916-6830-1-git-send-email-jinkun.hong@rock-chips.com> From: "jinkun.hong" <jinkun.hong@rock-chips.com> Signed-off-by: Jack Dai <jack.dai@rock-chips.com> Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> Signed-off-by: jinkun.hong <jinkun.hong@rock-chips.com> --- .../bindings/arm/rockchip/power_domain.txt | 48 ++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/rockchip/power_domain.txt diff --git a/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt b/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt new file mode 100644 index 0000000..2a80d3f --- /dev/null +++ b/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt @@ -0,0 +1,48 @@ +* Rockchip Power Domains + +Rockchip processors include support for multiple power domains which can be +powered up/down by software based on different application scenes to save power. + +Required properties for power domain controller: +- compatible: should be one of the following. + * rockchip,rk3288-power-controller - for rk3288 type power domain. +- #power-domain-cells: Number of cells in a power-domain specifier. + should be 1. +- rockchip,pmu: phandle referencing a syscon providing the pmu registers +- #address-cells: should be 1. +- #size-cells: should be 0. + +Required properties for power domain sub nodes: +- reg: index of the power domain, should use macros in: + * include/dt-bindings/power-domain/rk3288.h - for rk3288 type power domain. +- clocks: phandles to clocks which need to be enabled while power domain + switches state. + +Example: + + power: power-controller { + compatible = "rockchip,rk3288-power-controller"; + #power-domain-cells = <1>; + rockchip,pmu = <&pmu>; + #address-cells = <1>; + #size-cells = <0>; + + pd_gpu { + reg = <RK3288_PD_GPU>; + clocks = <&cru ACLK_GPU>; + }; + }; + +Node of a device using power domains must have a power-domains property, +containing a phandle to the power device node and an index specifying which +power domain to use. +The index should use macros in: + * include/dt-bindings/power-domain/rk3288.h - for rk3288 type power domain. + +Example of the node using power domain: + + node { + /* ... */ + power-domains = <&power RK3288_PD_GPU>; + /* ... */ + }; -- 1.7.9.5
next prev parent reply other threads:[~2014-09-23 2:56 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-09-23 2:55 [PATCH 0/3] ARM: rk3288 : Add PM Domain support jinkun.hong 2014-09-23 2:55 ` jinkun.hong 2014-09-23 2:55 ` [PATCH 1/3] power-domain: add power domain drivers for Rockchip platform jinkun.hong 2014-09-23 2:55 ` jinkun.hong 2014-09-23 2:55 ` jinkun.hong [this message] 2014-09-23 2:55 ` [PATCH 2/3] dt-bindings: add document of Rockchip power domain jinkun.hong 2014-09-23 2:55 ` [PATCH 3/3] ARM: dts: add rk3288 power-domain node jinkun.hong 2014-09-23 2:55 ` jinkun.hong 2014-09-23 3:36 ` Kever Yang 2014-09-23 3:36 ` Kever Yang 2014-09-23 17:52 ` Heiko Stübner 2014-09-23 17:52 ` Heiko Stübner 2014-09-23 17:52 ` Heiko Stübner 2014-09-24 13:13 ` Kever Yang 2014-09-24 13:13 ` Kever Yang
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