ARM: dts: vf610twr: add NAND flash controller peripherial

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@nbsps.com>
Reviewed-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts
index 375ab23ca7438049bac8c46022dceed27a17e25f..5438ee4be2ecf6278ac35cbf097a225b38a8a3ec 100644 (file)
--- 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 6865137fd114c7364c88f104a7413bf3d89c3218..6736bae43a5b09280ec824146e6caee85f787cdd 100644 (file)
--- a/arch/arm/boot/dts/vfxxx.dtsi
+++ b/arch/arm/boot/dts/vfxxx.dtsi
@@ -564,6 +564,17 @@
                                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";
+                       };
+
                        i2c2: i2c@400e6000 {
                                #address-cells = <1>;
                                #size-cells = <0>;