From mboxrd@z Thu Jan 1 00:00:00 1970 From: addy ke Subject: [PATCH 1/2] documentation: add rockchip spi documentation Date: Tue, 24 Jun 2014 11:58:43 +0800 Message-ID: <1403582324-9485-2-git-send-email-addy.ke@rock-chips.com> References: <1403582324-9485-1-git-send-email-addy.ke@rock-chips.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1403582324-9485-1-git-send-email-addy.ke@rock-chips.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: broonie@kernel.org, heiko@sntech.de, grant.likely@linaro.org, robh+dt@kernel.org Cc: huangtao@rock-chips.com, devicetree@vger.kernel.org, addy ke , yzq@rock-chips.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, kever.yang@rock-chips.com, zyw@rock-chips.com, xjq@rock-chips.com, zhenfu.fang@rock-chips.com, olof@lixom.net, cf@rock-chips.com, hj@rock-chips.com, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org Signed-off-by: addy ke --- .../devicetree/bindings/spi/spi-rockchip.txt | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-rockchip.txt diff --git a/Documentation/devicetree/bindings/spi/spi-rockchip.txt b/Documentation/devicetree/bindings/spi/spi-rockchip.txt new file mode 100644 index 0000000..ce9c881 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-rockchip.txt @@ -0,0 +1,51 @@ +* Rockchip SPI Controller + +The Rockchip SPI controller is used to interface with various devices such as flash +and display controllers using the SPI communication interface. + +Required SoC Specific Properties: + +- compatible: should be one of the following. + - rockchip,rk3066-spi: for rk3066, rk3188 and rk3288 platforms. +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: The interrupt number to the cpu. The interrupt specifier format + depends on the interrupt controller. +- clocks: Must contain an entry for each entry in clock-names. +- clock-names: Shall be "spiclk" for the transfer-clock, and "apb_pclk" for + the peripheral clock. + +Optional properties: +- dmas: DMA specifiers for tx and rx dma. See the DMA client binding, + Documentation/devicetree/bindings/dma/dma.txt +- dma-names: DMA request names should include "tx" and "rx" if present. + +Example: + +- SoC Specific Portion: + + spi0: spi@ff110000 { + compatible = "rockchip,rockchip-spi"; + reg = <0xff110000 0x1000>; + dmas = <&pdma1 11>, <&pdma1 12>; + dma-names = "tx", "rx"; + #address-cells = <1>; + #size-cells = <0>; + interrupts = ; + pinctrl-names = "default"; + pinctrl-0 = <&spi0_clk &spi0_tx &spi0_rx &spi0_cs0 &spi0_cs1>; + clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>; + clock-names = "spiclk", "apb_pclk"; + status = "disabled"; + }; + +- Board Specific Portion: + + &spi0 { + status = "okay"; + spi_test@00 { + compatible = "rockchip,spi_test"; + reg = <0>; + spi-max-frequency = <24000000>; + }; + }; -- 1.8.3.2