Import binding documentation from the Marvell SDK which adds
marvell,ac5-sdhci compatible string and documents the requirements for
the for the Xenon SDHCI controller on the 98DX2530.
Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
---
Notes:
Changes in v2:
- New
.../bindings/mmc/marvell,xenon-sdhci.txt | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt b/Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt
index c51a62d751dc..43df466f0cb3 100644
--- a/Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt
@@ -14,6 +14,7 @@ Required Properties:
- "marvell,armada-ap806-sdhci": For controllers on Armada AP806.
- "marvell,armada-ap807-sdhci": For controllers on Armada AP807.
- "marvell,armada-cp110-sdhci": For controllers on Armada CP110.
+ - "marvell,ac5-sdhci": For CnM on AC5, AC5X and derived.
- clocks:
Array of clocks required for SDHC.
@@ -33,6 +34,13 @@ Required Properties:
in below.
Please also check property marvell,pad-type in below.
+ * For "marvell,ac5-sdhci", one or two register areas.
+ (reg-names "ctrl" & "decoder").
+ The first one is mandatory for the Xenon IP registers.
+ The second one is for systems where DMA mapping is required and is the
+ related address decoder register (the value to configure is derived from
+ the parent "dma-ranges").
+
* For other compatible strings, one register area for Xenon IP.
Optional Properties:
@@ -171,3 +179,47 @@ Example:
marvell,pad-type = "sd";
};
+
+
+- For eMMC with compatible "marvell,ac5-sdhci" with one reg range (no dma):
+ sdhci0: sdhci@805c0000 {
+ compatible = "marvell,ac5-sdhci";
+ reg = <0x0 0x805c0000 0x0 0x300>;
+ reg-names = "ctrl", "decoder";
+ interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&core_clock>;
+ clock-names = "core";
+ status = "okay";
+ bus-width = <8>;
+ /*marvell,xenon-phy-slow-mode;*/
+ non-removable;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+ mmc-hs400-1_8v;
+ };
+
+- For eMMC with compatible "marvell,ac5-sdhci" with two reg ranges (with dma):
+ mmc_dma: mmc-dma-peripherals@80500000 {
+ compatible = "simple-bus";
+ #address-cells = <0x2>;
+ #size-cells = <0x2>;
+ ranges;
+ dma-ranges = <0x2 0x0 0x2 0x80000000 0x1 0x0>;
+ dma-coherent;
+
+ sdhci0: sdhci@805c0000 {
+ compatible = "marvell,ac5-sdhci", "marvell,armada-ap806-sdhci";
+ reg = <0x0 0x805c0000 0x0 0x300>, <0x0 0x80440230 0x0 0x4>;
+ reg-names = "ctrl", "decoder";
+ interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&core_clock>;
+ clock-names = "core";
+ status = "okay";
+ bus-width = <8>;
+ /*marvell,xenon-phy-slow-mode;*/
+ non-removable;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+ mmc-hs400-1_8v;
+ };
+ };
--
2.35.1
