Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt b/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
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index 000000000..3d1b449d6
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+++ b/Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
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+* Marvell sdhci-pxa v2/v3 controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the sdhci-pxav2 and sdhci-pxav3 drivers.
+
+Required properties:
+- compatible: Should be "mrvl,pxav2-mmc", "mrvl,pxav3-mmc" or
+  "marvell,armada-380-sdhci".
+- reg:
+  * for "mrvl,pxav2-mmc" and "mrvl,pxav3-mmc", one register area for
+    the SDHCI registers.
+
+  * for "marvell,armada-380-sdhci", three register areas. The first
+    one for the SDHCI registers themselves, the second one for the
+    AXI/Mbus bridge registers of the SDHCI unit, the third one for the
+    SDIO3 Configuration register
+- reg names: should be "sdhci", "mbus", "conf-sdio3". only mandatory
+  for "marvell,armada-380-sdhci"
+- clocks: Array of clocks required for SDHCI; requires at least one for
+    I/O clock.
+- clock-names: Array of names corresponding to clocks property; shall be
+    "io" for I/O clock and "core" for optional core clock.
+
+Optional properties:
+- mrvl,clk-delay-cycles: Specify a number of cycles to delay for tuning.
+
+Example:
+
+sdhci@d4280800 {
+	compatible = "mrvl,pxav3-mmc";
+	reg = <0xd4280800 0x800>;
+	bus-width = <8>;
+	interrupts = <27>;
+	clocks = <&chip CLKID_SDIO1XIN>, <&chip CLKID_SDIO1>;
+	clock-names = "io", "core";
+	non-removable;
+	mrvl,clk-delay-cycles = <31>;
+};
+
+sdhci@d8000 {
+	compatible = "marvell,armada-380-sdhci";
+	reg-names = "sdhci", "mbus", "conf-sdio3";
+	reg = <0xd8000 0x1000>,
+		<0xdc000 0x100>;
+		<0x18454 0x4>;
+	interrupts = <0 25 0x4>;
+	clocks = <&gateclk 17>;
+	clock-names = "io";
+	mrvl,clk-delay-cycles = <0x1F>;
+};