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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+* Freescale Enhanced Secure Digital Host Controller (eSDHC)
+
+The Enhanced Secure Digital Host Controller provides an interface
+for MMC, SD, and SDIO types of memory cards.
+
+This file documents differences between the core properties described
+by mmc.txt and the properties used by the sdhci-esdhc driver.
+
+Required properties:
+ - compatible : should be "fsl,esdhc", or "fsl,<chip>-esdhc".
+ Possible compatibles for PowerPC:
+ "fsl,mpc8536-esdhc"
+ "fsl,mpc8378-esdhc"
+ "fsl,p2020-esdhc"
+ "fsl,p4080-esdhc"
+ "fsl,t1040-esdhc"
+ "fsl,t4240-esdhc"
+ Possible compatibles for ARM:
+ "fsl,ls1012a-esdhc"
+ "fsl,ls1028a-esdhc"
+ "fsl,ls1088a-esdhc"
+ "fsl,ls1043a-esdhc"
+ "fsl,ls1046a-esdhc"
+ "fsl,ls2080a-esdhc"
+ - clock-frequency : specifies eSDHC base clock frequency.
+
+Optional properties:
+ - sdhci,wp-inverted : specifies that eSDHC controller reports
+ inverted write-protect state; New devices should use the generic
+ "wp-inverted" property.
+ - sdhci,1-bit-only : specifies that a controller can only handle
+ 1-bit data transfers. New devices should use the generic
+ "bus-width = <1>" property.
+ - sdhci,auto-cmd12: specifies that a controller can only handle auto
+ CMD12.
+ - voltage-ranges : two cells are required, first cell specifies minimum
+ slot voltage (mV), second cell specifies maximum slot voltage (mV).
+ Several ranges could be specified.
+ - little-endian : If the host controller is little-endian mode, specify
+ this property. The default endian mode is big-endian.
+
+Example:
+
+sdhci@2e000 {
+ compatible = "fsl,mpc8378-esdhc", "fsl,esdhc";
+ reg = <0x2e000 0x1000>;
+ interrupts = <42 0x8>;
+ interrupt-parent = <&ipic>;
+ /* Filled in by U-Boot */
+ clock-frequency = <0>;
+ voltage-ranges = <3300 3300>;
+};