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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/Documentation/devicetree/bindings/mmc/mmc.txt
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-These properties are common to multiple MMC host controllers. Any host
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-that requires the respective functionality should implement them using
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-these definitions.
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-
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-Interpreted by the OF core:
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-- reg: Registers location and length.
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-- interrupts: Interrupts used by the MMC controller.
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-
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-Card detection:
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-If no property below is supplied, host native card detect is used.
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-Only one of the properties in this section should be supplied:
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-  - broken-cd: There is no card detection available; polling must be used.
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-  - cd-gpios: Specify GPIOs for card detection, see gpio binding
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-  - non-removable: non-removable slot (like eMMC); assume always present.
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-
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-Optional properties:
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-- bus-width: Number of data lines, can be <1>, <4>, or <8>.  The default
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-  will be <1> if the property is absent.
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-- wp-gpios: Specify GPIOs for write protection, see gpio binding
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-- cd-inverted: when present, polarity on the CD line is inverted. See the note
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-  below for the case, when a GPIO is used for the CD line
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-- cd-debounce-delay-ms: Set delay time before detecting card after card insert interrupt.
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-  It's only valid when cd-gpios is present.
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-- wp-inverted: when present, polarity on the WP line is inverted. See the note
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-  below for the case, when a GPIO is used for the WP line
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-- disable-wp: When set no physical WP line is present. This property should
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-  only be specified when the controller has a dedicated write-protect
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-  detection logic. If a GPIO is always used for the write-protect detection
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-  logic it is sufficient to not specify wp-gpios property in the absence of a WP
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-  line.
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-- max-frequency: maximum operating clock frequency
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-- no-1-8-v: when present, denotes that 1.8v card voltage is not supported on
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-  this system, even if the controller claims it is.
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-- cap-sd-highspeed: SD high-speed timing is supported
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-- cap-mmc-highspeed: MMC high-speed timing is supported
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-- sd-uhs-sdr12: SD UHS SDR12 speed is supported
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-- sd-uhs-sdr25: SD UHS SDR25 speed is supported
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-- sd-uhs-sdr50: SD UHS SDR50 speed is supported
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-- sd-uhs-sdr104: SD UHS SDR104 speed is supported
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-- sd-uhs-ddr50: SD UHS DDR50 speed is supported
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-- cap-power-off-card: powering off the card is safe
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-- cap-mmc-hw-reset: eMMC hardware reset is supported
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-- cap-sdio-irq: enable SDIO IRQ signalling on this interface
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-- full-pwr-cycle: full power cycle of the card is supported
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-- mmc-ddr-3_3v: eMMC high-speed DDR mode(3.3V I/O) is supported
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-- mmc-ddr-1_8v: eMMC high-speed DDR mode(1.8V I/O) is supported
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-- mmc-ddr-1_2v: eMMC high-speed DDR mode(1.2V I/O) is supported
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-- mmc-hs200-1_8v: eMMC HS200 mode(1.8V I/O) is supported
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-- mmc-hs200-1_2v: eMMC HS200 mode(1.2V I/O) is supported
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-- mmc-hs400-1_8v: eMMC HS400 mode(1.8V I/O) is supported
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-- mmc-hs400-1_2v: eMMC HS400 mode(1.2V I/O) is supported
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-- mmc-hs400-enhanced-strobe: eMMC HS400 enhanced strobe mode is supported
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-- dsr: Value the card's (optional) Driver Stage Register (DSR) should be
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-  programmed with. Valid range: [0 .. 0xffff].
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-- no-sdio: controller is limited to send sdio cmd during initialization
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-- no-sd: controller is limited to send sd cmd during initialization
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-- no-mmc: controller is limited to send mmc cmd during initialization
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-- fixed-emmc-driver-type: for non-removable eMMC, enforce this driver type.
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-  The value <n> is the driver type as specified in the eMMC specification
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-  (table 206 in spec version 5.1).
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-- post-power-on-delay-ms : It was invented for MMC pwrseq-simple which could
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-  be referred to mmc-pwrseq-simple.txt. But now it's reused as a tunable delay
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-  waiting for I/O signalling and card power supply to be stable, regardless of
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-  whether pwrseq-simple is used. Default to 10ms if no available.
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-- supports-cqe : The presence of this property indicates that the corresponding
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-  MMC host controller supports HW command queue feature.
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-- disable-cqe-dcmd: This property indicates that the MMC controller's command
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-  queue engine (CQE) does not support direct commands (DCMDs).
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-
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-*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
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-polarity properties, we have to fix the meaning of the "normal" and "inverted"
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-line levels. We choose to follow the SDHCI standard, which specifies both those
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-lines as "active low." Therefore, using the "cd-inverted" property means, that
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-the CD line is active high, i.e. it is high, when a card is inserted. Similar
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-logic applies to the "wp-inverted" property.
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-
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-CD and WP lines can be implemented on the hardware in one of two ways: as GPIOs,
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-specified in cd-gpios and wp-gpios properties, or as dedicated pins. Polarity of
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-dedicated pins can be specified, using *-inverted properties. GPIO polarity can
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-also be specified using the GPIO_ACTIVE_LOW flag. This creates an ambiguity
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-in the latter case. We choose to use the XOR logic for GPIO CD and WP lines.
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-This means, the two properties are "superimposed," for example leaving the
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-GPIO_ACTIVE_LOW flag clear and specifying the respective *-inverted property
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-property results in a double-inversion and actually means the "normal" line
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-polarity is in effect.
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-
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-Optional SDIO properties:
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-- keep-power-in-suspend: Preserves card power during a suspend/resume cycle
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-- wakeup-source: Enables wake up of host system on SDIO IRQ assertion
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-		 (Legacy property supported: "enable-sdio-wakeup")
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-
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-MMC power
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----------
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-
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-Controllers may implement power control from both the connected cards and
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-the IO signaling (for example to change to high-speed 1.8V signalling). If
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-the system supports this, then the following two properties should point
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-to valid regulator nodes:
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-
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-- vqmmc-supply: supply node for IO line power
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-- vmmc-supply: supply node for card's power
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-
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-
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-MMC power sequences:
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---------------------
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-
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-System on chip designs may specify a specific MMC power sequence. To
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-successfully detect an (e)MMC/SD/SDIO card, that power sequence must be
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-maintained while initializing the card.
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-
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-Optional property:
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-- mmc-pwrseq: phandle to the MMC power sequence node. See "mmc-pwrseq-*"
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-	for documentation of MMC power sequence bindings.
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-
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-
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-Use of Function subnodes
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-------------------------
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-
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-On embedded systems the cards connected to a host may need additional
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-properties. These can be specified in subnodes to the host controller node.
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-The subnodes are identified by the standard 'reg' property.
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-Which information exactly can be specified depends on the bindings for the
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-SDIO function driver for the subnode, as specified by the compatible string.
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-
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-Required host node properties when using function subnodes:
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-- #address-cells: should be one. The cell is the slot id.
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-- #size-cells: should be zero.
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-
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-Required function subnode properties:
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-- reg: Must contain the SDIO function number of the function this subnode
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-       describes. A value of 0 denotes the memory SD function, values from
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-       1 to 7 denote the SDIO functions.
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-
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-Optional function subnode properties:
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-- compatible: name of SDIO function following generic names recommended practice
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-
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-
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-Examples
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---------
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-
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-Basic example:
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-
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-sdhci@ab000000 {
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-	compatible = "sdhci";
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-	reg = <0xab000000 0x200>;
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-	interrupts = <23>;
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-	bus-width = <4>;
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-	cd-gpios = <&gpio 69 0>;
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-	cd-inverted;
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-	wp-gpios = <&gpio 70 0>;
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-	max-frequency = <50000000>;
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-	keep-power-in-suspend;
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-	wakeup-source;
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-	mmc-pwrseq = <&sdhci0_pwrseq>
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-}
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-
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-Example with sdio function subnode:
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-
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-mmc3: mmc@1c12000 {
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-	#address-cells = <1>;
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-	#size-cells = <0>;
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-
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-	pinctrl-names = "default";
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-	pinctrl-0 = <&mmc3_pins_a>;
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-	vmmc-supply = <&reg_vmmc3>;
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-	bus-width = <4>;
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-	non-removable;
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-	mmc-pwrseq = <&sdhci0_pwrseq>
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-
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-	brcmf: bcrmf@1 {
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-		reg = <1>;
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-		compatible = "brcm,bcm43xx-fmac";
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-		interrupt-parent = <&pio>;
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-		interrupts = <10 8>; /* PH10 / EINT10 */
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-		interrupt-names = "host-wake";
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-	};
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-};
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+This file has moved to mmc-controller.yaml.