From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiancheng Xue Subject: [PATCH v3 2/7] clk: hisilicon: add dt-binding document for Hi3519 CRG Date: Fri, 11 Dec 2015 15:45:16 +0800 Message-ID: <1449819921-18464-3-git-send-email-xuejiancheng@huawei.com> References: <1449819921-18464-1-git-send-email-xuejiancheng@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1449819921-18464-1-git-send-email-xuejiancheng@huawei.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: mturquette@baylibre.com, sboyd@codeaurora.org, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux@arm.linux.org.uk, khilman@linaro.org, arnd@arndb.de, olof@lixom.net, xuwei5@hisilicon.com, haojian.zhuang@linaro.org, zhangfei.gao@linaro.org, bintian.wang@huawei.com Cc: suwenping@hisilicon.com, devicetree@vger.kernel.org, yanhaifeng@hisilicon.com, linux-kernel@vger.kernel.org, xuejiancheng@hisilicon.com, gaofei@hisilicon.com, Jiancheng Xue , ml.yang@hisilicon.com, yanghongwei@hisilicon.com, zhangzhenxing@hisilicon.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org add dt-binding document for Hi3519 CRG block Signed-off-by: Jiancheng Xue --- .../devicetree/bindings/clock/hi3519-crg.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/hi3519-crg.txt diff --git a/Documentation/devicetree/bindings/clock/hi3519-crg.txt b/Documentation/devicetree/bindings/clock/hi3519-crg.txt new file mode 100644 index 0000000..e0d30a4 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/hi3519-crg.txt @@ -0,0 +1,46 @@ +* Hisilicon Hi3519 Clock and Reset Generator(CRG) + +The Hi3519 CRG module provides clock and reset signals to various +controllers within the SoC. + +This binding uses the following bindings: + Documentation/devicetree/bindings/clock/clock-bindings.txt + Documentation/devicetree/bindings/reset/reset.txt + +Required Properties: + +- compatible: should be one of the following. + - "hisilicon,hi3519-crg" - controller compatible with Hi3519 SoC. + +- reg: physical base address of the controller and length of memory mapped + region. + +- #clock-cells: should be 1. + +Each clock is assigned an identifier and client nodes use this identifier +to specify the clock which they consume. + +All these identifier could be found in . + +- #reset-cells: should be 2. + +A reset signal can be controlled by writing a bit register in the CRG module. +The reset specifier consists of two cells. The first cell represents the +register offset relative to the base address. The second cell represents the +bit index in the register. + +Example: CRG nodes +CRG: clock-reset-controller { + compatible = "hisilicon,hi3519-crg"; + reg = <0x12010000 0x10000>; + #clock-cells = <1>; + #reset-cells = <2>; +}; + +Example: consumer nodes +i2c0: i2c@0x12110000 { + compatible = "hisilicon,hi3519-i2c"; + reg = <0x12110000 0x1000>; + clocks = <&CRG HI3519_I2C0_RST>;*/ + resets = <&CRG 0xE4 0>; +}; -- 1.9.1