This file documents the differences between the core properties in
Documentation/devicetree/bindings/mmc/mmc.txt and the properties
used by the sdhci-st driver.
Required properties:
- compatible: Must be "st,sdhci" and it can be compatible to "st,sdhci-stih407"
to set the internal glue logic used for configuring the MMC
subsystem (mmcss) inside the FlashSS (available in STiH407 SoC
family).
- clock-names: Should be "mmc" and "icn". (NB: The latter is not compulsory)
See: Documentation/devicetree/bindings/resource-names.txt
- clocks: Phandle to the clock.
See: Documentation/devicetree/bindings/clock/clock-bindings.txt
- interrupts: One mmc interrupt should be described here.
- interrupt-names: Should be "mmcirq".
- pinctrl-names: A pinctrl state names "default" must be defined.
- pinctrl-0: Phandle referencing pin configuration of the sd/emmc controller.
See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
- reg: This must provide the host controller base address and it can also
contain the FlashSS Top register for TX/RX delay used by the driver
to configure DLL inside the flashSS, if so reg-names must also be
specified.
Optional properties:
- reg-names: Should be "mmc" and "top-mmc-delay". "top-mmc-delay" is optional
for eMMC on stih407 family silicon to configure DLL inside FlashSS.
- non-removable: Non-removable slot. Also used for configuring mmcss in STiH407 SoC
family.
See: Documentation/devicetree/bindings/mmc/mmc.txt.
- bus-width: Number of data lines.
See: Documentation/devicetree/bindings/mmc/mmc.txt.
- max-frequency: Can be 200MHz, 100MHz or 50MHz (default) and used for
configuring the CCONFIG3 in the mmcss.
See: Documentation/devicetree/bindings/mmc/mmc.txt.
- resets: Phandle and reset specifier pair to softreset line of HC IP.
See: Documentation/devicetree/bindings/reset/reset.txt
- vqmmc-supply: Phandle to the regulator dt node, mentioned as the vcc/vdd
supply in eMMC/SD specs.
- sd-uhs-sdr50: To enable the SDR50 in the mmcss.
See: Documentation/devicetree/bindings/mmc/mmc.txt.
- sd-uhs-sdr104: To enable the SDR104 in the mmcss.
See: Documentation/devicetree/bindings/mmc/mmc.txt.
- sd-uhs-ddr50: To enable the DDR50 in the mmcss.
See: Documentation/devicetree/bindings/mmc/mmc.txt.
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.