From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chunyan Zhang Subject: [PATCH V1 1/9] dt-bindings: Add Spreadtrum CCU binding documentation Date: Sun, 18 Jun 2017 09:58:47 +0800 Message-ID: <20170618015855.27738-2-chunyan.zhang@spreadtrum.com> References: <20170618015855.27738-1-chunyan.zhang@spreadtrum.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20170618015855.27738-1-chunyan.zhang@spreadtrum.com> Sender: linux-kernel-owner@vger.kernel.org To: Michael Turquette , Stephen Boyd , Rob Herring , Mark Rutland Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Arnd Bergmann , Mark Brown , Xiaolong Zhang , Orson Zhai , Geng Ren , Chunyan Zhang , Chunyan Zhang List-Id: devicetree@vger.kernel.org Introduce a new binding with its documentation for Spreadtrum clock sub-framework. Signed-off-by: Chunyan Zhang --- .../devicetree/bindings/clock/sprd-ccu.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/sprd-ccu.txt diff --git a/Documentation/devicetree/bindings/clock/sprd-ccu.txt b/Documentation/devicetree/bindings/clock/sprd-ccu.txt new file mode 100644 index 0000000..7a1aa4c --- /dev/null +++ b/Documentation/devicetree/bindings/clock/sprd-ccu.txt @@ -0,0 +1,46 @@ +Spreadtrum Clock Control Unit Binding +------------------------------------ + +This binding uses the common clock binding[1]. + +Required properties: +- compatible: must contain the following compatible: + - "sprd,sc9860-ccu" (only support SC9860 for the time being) + +- reg: Must contain the registers base address and length. + Clocks on most of Spreadtrum's SoCs were designed to locate in a few + different address areas, so there would be more than one items under + this property. + +- clock-names: Must contain the following clock names: + - "ext-26m", "ext-rco-100m", "ext-32k" +- #clock-cells: must be 1 + +Example: + +ccu: clk { + compatible = "sprd,sc9860-ccu"; + #clock-cells = <1>; + reg = <0 0x20000000 0 0x400>, + <0 0x20210000 0 0x3000>, + <0 0x402b0000 0 0x4000>, + <0 0x402d0000 0 0x400>, + <0 0x402e0000 0 0x4000>, + <0 0x40400000 0 0x400>, + <0 0x40880000 0 0x400>, + <0 0x415e0000 0 0x400>, + <0 0x60200000 0 0x400>, + <0 0x61000000 0 0x400>, + <0 0x61100000 0 0x3000>, + <0 0x62000000 0 0x4000>, + <0 0x62100000 0 0x4000>, + <0 0x63000000 0 0x400>, + <0 0x63100000 0 0x3000>, + <0 0x70b00000 0 0x3000>; + clocks = <&ext_26m>, <&ext_rco_100m>, <&ext_32k>; + clock-names = "ext-26m", "ext-rco-100m", "ext-32k"; +}; + +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt + + -- 2.7.4