From mboxrd@z Thu Jan 1 00:00:00 1970 From: addy.ke@rock-chips.com (addy ke) Date: Tue, 1 Jul 2014 09:02:57 +0800 Subject: [PATCH v2 1/2] documentation: add rockchip spi documentation In-Reply-To: <1403582324-9485-2-git-send-email-addy.ke@rock-chips.com> References: <1403582324-9485-2-git-send-email-addy.ke@rock-chips.com> Message-ID: <1404176577-3274-1-git-send-email-addy.ke@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: addy ke --- changes since v1: - fix binding document according to comments from Mark Rutland - fix address according to comments from Mark Brown - combine all properties into "Required Properties" suggested by Heiko St?bner - remove "Board Specific Portion" suggested by Heiko St?bner .../devicetree/bindings/spi/spi-rockchip.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 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..7bab355 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-rockchip.txt @@ -0,0 +1,37 @@ +* 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 Properties: + +- compatible: should be one of the following. + "rockchip,rk3066-spi" for rk3066. + "rockchip,rk3188-spi", "rockchip,rk3066-spi" for rk3188. + "rockchip,rk3288-spi", "rockchip,rk3066-spi" for rk3288. +- 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. +- 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. +- #address-cells: should be 1. +- #size-cells: should be 0. + +Example: + + spi0: spi at ff110000 { + compatible = "rockchip,rk3066-spi"; + reg = <0xff110000 0x1000>; + dmas = <&pdma1 11>, <&pdma1 12>; + dma-names = "tx", "rx"; + #address-cells = <1>; + #size-cells = <0>; + interrupts = ; + clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>; + clock-names = "spiclk", "apb_pclk"; + }; -- 1.8.3.2