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Date: Tue, 10 Sep 2013 14:24:39 -0500
From: Joel Fernandes <joelf@...com>
To: Benoit Cousson <bcousson@...libre.com>
CC: Nishanth Menon <nm@...com>,
Devicetree Discuss <devicetree@...r.kernel.org>,
Linux OMAP List <linux-omap@...r.kernel.org>,
Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux Documentation List <linux-doc@...r.kernel.org>,
Linux MMC List <linux-mmc@...r.kernel.org>,
Linux SPI Devel List
<spi-devel-general@...ts.sourceforge.net>,
Joel Fernandes <joelf@...com>
Subject: [PATCH 3/3] ARM: dts: add AM33XX MMC support and documentation
From: Matt Porter <mporter@...com>
Adds AM33XX MMC support for am335x-bone, am335x-evm and am335x-evmsk boards.
Also added is the DMA binding definitions based on the generic DMA request
binding.
Additional changes made to DTS:
* Interrupt, reg and compatible properties added
* ti,needs-special-hs-handling added
Signed-off-by: Matt Porter <mporter@...com>
Acked-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Joel Fernandes <joelf@...com>
---
.../devicetree/bindings/mmc/ti-omap-hsmmc.txt | 26 ++++++++++++++-
arch/arm/boot/dts/am335x-bone.dts | 11 +++++++
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, 88 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@...809c000 {
+ 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@...809c000 {
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 7993c48..d5f43fe 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -9,3 +9,14 @@
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
+
+&ldo3_reg {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+};
+
+&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 e8ec875..bc4a69d 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -477,6 +477,8 @@
};
vmmc_reg: regulator@12 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
regulator-always-on;
};
};
@@ -517,3 +519,8 @@
ti,adc-channels = <4 5 6 7>;
};
};
+
+&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 4f339fa..55fd194 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -393,6 +393,8 @@
};
vmmc_reg: regulator@12 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
regulator-always-on;
};
};
@@ -419,3 +421,8 @@
phy_id = <&davinci_mdio>, <1>;
phy-mode = "rgmii-txid";
};
+
+&mmc1 {
+ status = "okay";
+ vmmc-supply = <&vmmc_reg>;
+};
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 9ce85e5..0a82fca 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -240,6 +240,44 @@
status = "disabled";
};
+ mmc1: mmc@...60000 {
+ 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@...d8000 {
+ 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@...10000 {
+ compatible = "ti,omap4-hsmmc";
+ ti,hwmods = "mmc3";
+ ti,needs-special-reset;
+ interrupts = <29>;
+ interrupt-parent = <&intc>;
+ reg = <0x47810000 0x1000>;
+ status = "disabled";
+ };
+
wdt2: wdt@...35000 {
compatible = "ti,omap3-wdt";
ti,hwmods = "wd_timer2";
--
1.8.1.2
--
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