From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Shawn Guo Subject: [PATCH v2 1/2] dt-bindings: mmc: add bindings for hi3798cv200-dw-mshc Date: Tue, 6 Mar 2018 14:58:50 +0800 Message-Id: <1520319531-24661-2-git-send-email-shawn.guo@linaro.org> In-Reply-To: <1520319531-24661-1-git-send-email-shawn.guo@linaro.org> References: <1520319531-24661-1-git-send-email-shawn.guo@linaro.org> To: Ulf Hansson Cc: Jaehoon Chung , Rob Herring , tianshuliang , Jiancheng Xue , devicetree@vger.kernel.org, linux-mmc@vger.kernel.org, Shawn Guo List-ID: From: tianshuliang Hisilicon hi3798cv200 SoC extends the dw-mshc controller for additional clock control. Add device tree bindings for hi3798cv200-dw-mshc. Signed-off-by: tianshuliang Signed-off-by: Jiancheng Xue Signed-off-by: Shawn Guo --- .../bindings/mmc/hi3798cv200-dw-mshc.txt | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/hi3798cv200-dw-mshc.txt diff --git a/Documentation/devicetree/bindings/mmc/hi3798cv200-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/hi3798cv200-dw-mshc.txt new file mode 100644 index 000000000000..a0693b7145f2 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/hi3798cv200-dw-mshc.txt @@ -0,0 +1,40 @@ +* Hisilicon Hi3798CV200 specific extensions to the Synopsys Designware Mobile + Storage Host Controller + +Read synopsys-dw-mshc.txt for more details + +The Synopsys designware mobile storage host controller is used to interface +a SoC with storage medium such as eMMC or SD/MMC cards. This file documents +differences between the core Synopsys dw mshc controller properties described +by synopsys-dw-mshc.txt and the properties used by the Hisilicon Hi3798CV200 +specific extensions to the Synopsys Designware Mobile Storage Host Controller. + +Required Properties: +- compatible: Should contain "hisilicon,hi3798cv200-dw-mshc". +- clocks: A list of phandle + clock-specifier pairs for the clocks listed + in clock-names. +- clock-names: Should contain the following: + "ciu" - The ciu clock described in synopsys-dw-mshc.txt. + "biu" - The biu clock described in synopsys-dw-mshc.txt. + "ciu-sample" - Hi3798CV200 extended phase clock for ciu sampling. + "ciu-drive" - Hi3798CV200 extended phase clock for ciu driving. + +Example: + + emmc: mmc@9830000 { + compatible = "hisilicon,hi3798cv200-dw-mshc"; + reg = <0x9830000 0x10000>; + interrupts = ; + clocks = <&crg HISTB_MMC_CIU_CLK>, + <&crg HISTB_MMC_BIU_CLK>, + <&crg HISTB_MMC_SAMPLE_CLK>, + <&crg HISTB_MMC_DRV_CLK>; + clock-names = "ciu", "biu", "ciu-sample", "ciu-drive"; + fifo-depth = <256>; + clock-frequency = <200000000>; + cap-mmc-highspeed; + mmc-ddr-1_8v; + mmc-hs200-1_8v; + non-removable; + bus-width = <8>; + }; -- 1.9.1