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/renesas,mmcif.txt b/Documentation/devicetree/bindings/mmc/renesas,mmcif.txt
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+* Renesas Multi Media Card Interface (MMCIF) Controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the MMCIF device.
+
+
+Required properties:
+
+- compatible: should be "renesas,mmcif-<soctype>", "renesas,sh-mmcif" as a
+  fallback. Examples with <soctype> are:
+	- "renesas,mmcif-r7s72100" for the MMCIF found in r7s72100 SoCs
+	- "renesas,mmcif-r8a73a4" for the MMCIF found in r8a73a4 SoCs
+	- "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs
+	- "renesas,mmcif-r8a7743" for the MMCIF found in r8a7743 SoCs
+	- "renesas,mmcif-r8a7745" for the MMCIF found in r8a7745 SoCs
+	- "renesas,mmcif-r8a7778" for the MMCIF found in r8a7778 SoCs
+	- "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs
+	- "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs
+	- "renesas,mmcif-r8a7793" for the MMCIF found in r8a7793 SoCs
+	- "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs
+	- "renesas,mmcif-sh73a0" for the MMCIF found in sh73a0 SoCs
+
+- interrupts: Some SoCs have only 1 shared interrupt, while others have either
+  2 or 3 individual interrupts (error, int, card detect). Below is the number
+  of interrupts for each SoC:
+    1: r8a73a4, r8a7743, r8a7745, r8a7778, r8a7790, r8a7791, r8a7793, r8a7794
+    2: r8a7740, sh73a0
+    3: r7s72100
+
+- clocks: reference to the functional clock
+
+- dmas: reference to the DMA channels, one per channel name listed in the
+  dma-names property.
+- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the
+  receive DMA channel.
+- max-frequency: Maximum operating clock frequency, driver uses default clock
+  frequency if it is not set.
+
+
+Example: R8A7790 (R-Car H2) MMCIF0
+
+	mmcif0: mmc@ee200000 {
+		compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
+		reg = <0 0xee200000 0 0x80>;
+		interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>;
+		dmas = <&dmac0 0xd1>, <&dmac0 0xd2>;
+		dma-names = "tx", "rx";
+		max-frequency = <97500000>;
+	};