[PATCH 4/5] ARM: dts: vf610: add NAND flash controller peripherial

[Stefan Agner]

This adds the NAND flash controller (NFC) peripherial. The driver
supports the SLC NAND chips found on Freescale's Vybrid Tower System
Module. The Micron NAND chip on the module needs 4-bit ECC per 512
byte page. Use 24-bit ECC per 2k page, which is supported by the
driver.

Signed-off-by: Bill Pringlemeir <bpringlemeir at nbsps.com>
Signed-off-by: Stefan Agner <stefan at agner.ch>
---
 arch/arm/boot/dts/vf500.dtsi    |  4 ++++
 arch/arm/boot/dts/vf610-twr.dts | 43 +++++++++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/vfxxx.dtsi    |  7 +++++++
 3 files changed, 54 insertions(+)

diff --git a/arch/arm/boot/dts/vf500.dtsi b/arch/arm/boot/dts/vf500.dtsi
index 1dbf8d2..1aa1e47 100644
--- a/arch/arm/boot/dts/vf500.dtsi
+++ b/arch/arm/boot/dts/vf500.dtsi
@@ -118,6 +118,10 @@
 	interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
 };
 
+&nfc {
+	interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+};
+
 &pit {
 	interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
 };
diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts
index f64fddc..704564e 100644
--- a/arch/arm/boot/dts/vf610-twr.dts
+++ b/arch/arm/boot/dts/vf610-twr.dts
@@ -287,6 +287,49 @@
 	status = "okay";
 };
 
+&iomuxc {
+	vf610-twr {
+		pinctrl_nfc_1: nfcgrp_1 {
+			fsl,pins = <
+			VF610_PAD_PTD31__NF_IO15	0x28df
+			VF610_PAD_PTD30__NF_IO14	0x28df
+			VF610_PAD_PTD29__NF_IO13	0x28df
+			VF610_PAD_PTD28__NF_IO12	0x28df
+			VF610_PAD_PTD27__NF_IO11	0x28df
+			VF610_PAD_PTD26__NF_IO10	0x28df
+			VF610_PAD_PTD25__NF_IO9		0x28df
+			VF610_PAD_PTD24__NF_IO8		0x28df
+			VF610_PAD_PTD23__NF_IO7		0x28df
+			VF610_PAD_PTD22__NF_IO6		0x28df
+			VF610_PAD_PTD21__NF_IO5		0x28df
+			VF610_PAD_PTD20__NF_IO4		0x28df
+			VF610_PAD_PTD19__NF_IO3		0x28df
+			VF610_PAD_PTD18__NF_IO2		0x28df
+			VF610_PAD_PTD17__NF_IO1		0x28df
+			VF610_PAD_PTD16__NF_IO0		0x28df
+			VF610_PAD_PTB24__NF_WE_B	0x28c2
+			VF610_PAD_PTB25__NF_CE0_B	0x28c2
+			VF610_PAD_PTB27__NF_RE_B	0x28c2
+			VF610_PAD_PTC26__NF_RB_B	0x283d
+			VF610_PAD_PTC27__NF_ALE		0x28c2
+			VF610_PAD_PTC28__NF_CLE		0x28c2
+			>;
+		};
+	};
+};
+
+&nfc {
+	clock-frequency = <33000000>;
+	nand-bus-width = <16>;
+	nand-ecc-mode = "hw";
+	nand-on-flash-bbt;
+	nand-ecc-strength = <24>;
+	nand-ecc-step-size = <2048>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_nfc_1>;
+	status = "okay";
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;
diff --git a/arch/arm/boot/dts/vfxxx.dtsi b/arch/arm/boot/dts/vfxxx.dtsi
index a29c7ce..03b4b55 100644
--- a/arch/arm/boot/dts/vfxxx.dtsi
+++ b/arch/arm/boot/dts/vfxxx.dtsi
@@ -458,6 +458,13 @@
 				status = "disabled";
 			};
 
+			nfc: nand at 400e0000 {
+				compatible = "fsl,vf610-nfc";
+				reg = <0x400e0000 0x4000>;
+				clocks = <&clks VF610_CLK_NFC>;
+				clock-names = "nfc";
+				status = "disabled";
+			};
 		};
 	};
 };
-- 
2.3.0