[PATCH v2] ARM: dts: add AM33XX MMC support

[Joel Fernandes]

From: Matt Porter <mporter at ti.com>

Adds AM33XX MMC support for am335x-bone, am335x-evm, and am335x-evmsk.
Also added is the DMA binding definitions based on the generic DMA
request binding.

The HWMOD data removal was breaking MMC so some new properties like reg,
interrupt etc were added.

Changes to DTS:
Interrupt and reg added by: Joel Fernandes <joelf at ti.com>
Compatible added by Balaji TK <balajitk at ti.com>
ti,needs-special-hs-handling added by Gururaja Hebbar <gururaja.hebbar at ti.com>

Signed-off-by: Matt Porter <mporter at ti.com>
Acked-by: Tony Lindgren <tony at atomide.com>
Signed-off-by: Joel Fernandes <joelf at ti.com>
---
 .../devicetree/bindings/mmc/ti-omap-hsmmc.txt      |   26 +++++++++++++-
 arch/arm/boot/dts/am335x-bone.dts                  |    7 ++++
 arch/arm/boot/dts/am335x-evm.dts                   |    7 ++++
 arch/arm/boot/dts/am335x-evmsk.dts                 |    7 ++++
 arch/arm/boot/dts/am33xx.dtsi                      |   38 ++++++++++++++++++++
 5 files changed, 84 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
index ed271fc..8c8908a 100644
--- a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
+++ b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
@@ -20,8 +20,29 @@ ti,dual-volt: boolean, supports dual voltage cards
 ti,non-removable: non-removable slot (like eMMC)
 ti,needs-special-reset: Requires a special softreset sequence
 ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
+dmas: List of DMA specifiers with the controller specific format
+as described in the generic DMA client binding. A tx and rx
+specifier is required.
+dma-names: List of DMA request names. These strings correspond
+1:1 with the DMA specifiers listed in dmas. The string naming is
+to be "rx" and "tx" for RX and TX DMA requests, respectively.
+
+Examples:
+
+[hwmod populated DMA resources]
+
+	mmc1: mmc at 0x4809c000 {
+		compatible = "ti,omap4-hsmmc";
+		reg = <0x4809c000 0x400>;
+		ti,hwmods = "mmc1";
+		ti,dual-volt;
+		bus-width = <4>;
+		vmmc-supply = <&vmmc>; /* phandle to regulator node */
+		ti,non-removable;
+	};
+
+[generic DMA request binding]
 
-Example:
 	mmc1: mmc at 0x4809c000 {
 		compatible = "ti,omap4-hsmmc";
 		reg = <0x4809c000 0x400>;
@@ -30,4 +51,7 @@ Example:
 		bus-width = <4>;
 		vmmc-supply = <&vmmc>; /* phandle to regulator node */
 		ti,non-removable;
+		dmas = <&edma 24
+			&edma 25>;
+		dma-names = "tx", "rx";
 	};
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 5302f79..80bff9c 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -120,6 +120,8 @@
 		};
 
 		ldo3_reg: regulator at 5 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3300000>;
 			regulator-always-on;
 		};
 
@@ -136,3 +138,8 @@
 &cpsw_emac1 {
 	phy_id = <&davinci_mdio>, <1>;
 };
+
+&mmc1 {
+	status = "okay";
+	vmmc-supply = <&ldo3_reg>;
+};
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 0423298..62af561 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -232,6 +232,8 @@
 		};
 
 		vmmc_reg: regulator at 12 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3300000>;
 			regulator-always-on;
 		};
 	};
@@ -244,3 +246,8 @@
 &cpsw_emac1 {
 	phy_id = <&davinci_mdio>, <1>;
 };
+
+&mmc1 {
+	status = "okay";
+	vmmc-supply = <&vmmc_reg>;
+};
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index f67c360..8904b88 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -244,7 +244,14 @@
 		};
 
 		vmmc_reg: regulator at 12 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3300000>;
 			regulator-always-on;
 		};
 	};
 };
+
+&mmc1 {
+	status = "okay";
+	vmmc-supply = <&vmmc_reg>;
+};
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index b4fda12..8ab566f 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -229,6 +229,44 @@
 			status = "disabled";
 		};
 
+		mmc1: mmc at 48060000 {
+			compatible = "ti,omap4-hsmmc";
+			ti,hwmods = "mmc1";
+			ti,dual-volt;
+			ti,needs-special-reset;
+			ti,needs-special-hs-handling;
+			dmas = <&edma 24
+				&edma 25>;
+			dma-names = "tx", "rx";
+			interrupts = <64>;
+			interrupt-parent = <&intc>;
+			reg = <0x48060000 0x1000>;
+			status = "disabled";
+		};
+
+		mmc2: mmc at 481d8000 {
+			compatible = "ti,omap4-hsmmc";
+			ti,hwmods = "mmc2";
+			ti,needs-special-reset;
+			dmas = <&edma 2
+				&edma 3>;
+			dma-names = "tx", "rx";
+			interrupts = <28>;
+			interrupt-parent = <&intc>;
+			reg = <0x481d8000 0x1000>;
+			status = "disabled";
+		};
+
+		mmc3: mmc at 47810000 {
+			compatible = "ti,omap4-hsmmc";
+			ti,hwmods = "mmc3";
+			ti,needs-special-reset;
+			interrupts = <29>;
+			interrupt-parent = <&intc>;
+			reg = <0x47810000 0x1000>;
+			status = "disabled";
+		};
+
 		wdt2: wdt at 44e35000 {
 			compatible = "ti,omap3-wdt";
 			ti,hwmods = "wd_timer2";
-- 
1.7.9.5