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Date: Thu, 30 Aug 2018 16:21:45 +0800 From: Chunyan Zhang <zhang.chunyan@...aro.org> To: Ulf Hansson <ulf.hansson@...aro.org>, Adrian Hunter <adrian.hunter@...el.com>, Rob Herring <robh+dt@...nel.org> Cc: linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org, Orson Zhai <orsonzhai@...il.com>, Baolin Wang <baolin.wang@...aro.org>, Billows Wu <billows.wu@...soc.com>, Jason Wu <jason.wu@...soc.com>, Chunyan Zhang <chunyan.zhang@...soc.com>, Chunyan Zhang <zhang.lyra@...il.com> Subject: [PATCH V8 9/9] dt-bindings: sdhci-sprd: Add bindings for the sdhci-sprd controller From: Chunyan Zhang <chunyan.zhang@...soc.com> This patch adds the device-tree binding documentation for Spreadtrum SDHCI driver. Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com> --- .../devicetree/bindings/mmc/sdhci-sprd.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-sprd.txt diff --git a/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt b/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt new file mode 100644 index 0000000..45c9978 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt @@ -0,0 +1,41 @@ +* Spreadtrum SDHCI controller (sdhci-sprd) + +The Secure Digital (SD) Host controller on Spreadtrum SoCs provides an interface +for MMC, SD and SDIO types of cards. + +This file documents differences between the core properties in mmc.txt +and the properties used by the sdhci-sprd driver. + +Required properties: +- compatible: Should contain "sprd,sdhci-r11". +- reg: physical base address of the controller and length. +- interrupts: Interrupts used by the SDHCI controller. +- clocks: Should contain phandle for the clock feeding the SDHCI controller +- clock-names: Should contain the following: + "sdio" - SDIO source clock (required) + "enable" - gate clock which used for enabling/disabling the device (required) + +Optional properties: +- assigned-clocks: the same with "sdio" clock +- assigned-clock-parents: the default parent of "sdio" clock + +Examples: + +sdio0: sdio@...00000 { + compatible = "sprd,sdhci-r11"; + reg = <0 0x20600000 0 0x1000>; + interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; + + clock-names = "sdio", "enable"; + clocks = <&ap_clk CLK_EMMC_2X>, + <&apahb_gate CLK_EMMC_EB>; + assigned-clocks = <&ap_clk CLK_EMMC_2X>; + assigned-clock-parents = <&rpll CLK_RPLL_390M>; + + bus-width = <8>; + non-removable; + no-sdio; + no-sd; + cap-mmc-hw-reset; + status = "okay"; +}; -- 2.7.4
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