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Diffstat (limited to 'Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt new file mode 100644 index 000000000..3b3544931 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt @@ -0,0 +1,44 @@ +* Hisilicon 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 specific +extensions to the Synopsys Designware Mobile Storage Host Controller. + +Required Properties: + +* compatible: should be one of the following. + - "hisilicon,hi4511-dw-mshc": for controllers with hi4511 specific extensions. + +Example: + + /* for Hi3620 */ + + /* SoC portion */ + dwmmc_0: dwmmc0@fcd03000 { + compatible = "hisilicon,hi4511-dw-mshc"; + reg = <0xfcd03000 0x1000>; + interrupts = <0 16 4>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>; + clock-names = "ciu", "biu"; + }; + + /* Board portion */ + dwmmc0@fcd03000 { + num-slots = <1>; + vmmc-supply = <&ldo12>; + fifo-depth = <0x100>; + pinctrl-names = "default"; + pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>; + bus-width = <4>; + disable-wp; + cd-gpios = <&gpio10 3 0>; + cap-mmc-highspeed; + cap-sd-highspeed; + }; |