ARM: dts: vf610twr: add NAND flash controller peripherial
authorStefan Agner <stefan@agner.ch>
Wed, 7 Oct 2015 23:58:35 +0000 (16:58 -0700)
committerShawn Guo <shawnguo@kernel.org>
Mon, 19 Oct 2015 14:45:24 +0000 (22:45 +0800)
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>
arch/arm/boot/dts/vf610-twr.dts
arch/arm/boot/dts/vfxxx.dtsi

index 375ab23ca7438049bac8c46022dceed27a17e25f..5438ee4be2ecf6278ac35cbf097a225b38a8a3ec 100644 (file)
                        >;
                };
 
+               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
        };
 };
 
+&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>;
index 6865137fd114c7364c88f104a7413bf3d89c3218..6736bae43a5b09280ec824146e6caee85f787cdd 100644 (file)
                                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>;