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@xxxxxxxxx>
Reviewed-by: Brian Norris <computersforpeace@xxxxxxxxx>
Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
---
arch/arm/boot/dts/vf610-twr.dts | 47 +++++++++++++++++++++++++++++++++++++++++
arch/arm/boot/dts/vfxxx.dtsi | 10 +++++++++
2 files changed, 57 insertions(+)
diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts
index 375ab23..64d1696 100644
--- a/arch/arm/boot/dts/vf610-twr.dts
+++ b/arch/arm/boot/dts/vf610-twr.dts
@@ -237,6 +237,33 @@
>;
};
+ pinctrl_nfc: nfcgrp {
+ 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
+ >;
+ };
+
pinctrl_pwm0: pwm0grp {
fsl,pins = <
VF610_PAD_PTB0__FTM0_CH0 0x1582
@@ -274,6 +301,26 @@
};
};
+&nfc {
+ assigned-clocks = <&clks VF610_CLK_NFC>;
+ assigned-clock-rates = <33000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nfc>;
+ status = "okay";
+
+ nand@0 {
+ compatible = "fsl,vf610-nfc-nandcs";
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ nand-bus-width = <16>;
+ nand-ecc-mode = "hw";
+ nand-ecc-strength = <24>;
+ nand-ecc-step-size = <2048>;
+ nand-on-flash-bbt;
+ };
+};
+
&pwm0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm0>;
diff --git a/arch/arm/boot/dts/vfxxx.dtsi b/arch/arm/boot/dts/vfxxx.dtsi
index 4aa3351..17066a2 100644
--- a/arch/arm/boot/dts/vfxxx.dtsi
+++ b/arch/arm/boot/dts/vfxxx.dtsi
@@ -520,6 +520,16 @@
status = "disabled";
};
+ nfc: nand@400e0000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,vf610-nfc";
+ reg = <0x400e0000 0x4000>;
+ interrupts = <83 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks VF610_CLK_NFC>;
+ clock-names = "nfc";
+ status = "disabled";
+ };
};
};
};
--
2.5.0
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
