Commit 70f7cb78 authored by Roland Stigge's avatar Roland Stigge Committed by David Woodhouse
Browse files

mtd: add LPC32xx MLC NAND driver 



This patch adds a driver for the MLC NAND controller of the LPC32xx SoC.

[dwmw2: 21st century pedantry]

Signed-off-by: default avatarRoland Stigge <stigge@antcom.de>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent d5842ab7

Documentation/devicetree/bindings/mtd/lpc32xx-mlc.txt

0 → 100644
+50 −0
Original line number Diff line number Diff line 
NXP LPC32xx SoC NAND MLC controller



Required properties:

- compatible: "nxp,lpc3220-mlc"

- reg: Address and size of the controller

- interrupts: The NAND interrupt specification

- gpios: GPIO specification for NAND write protect



The following required properties are very controller specific. See the LPC32xx

User Manual 7.5.14 MLC NAND Timing Register (the values here are specified in

Hz, to make them independent of actual clock speed and to provide for good

accuracy:)

- nxp,tcea_delay: TCEA_DELAY

- nxp,busy_delay: BUSY_DELAY

- nxp,nand_ta: NAND_TA

- nxp,rd_high: RD_HIGH

- nxp,rd_low: RD_LOW

- nxp,wr_high: WR_HIGH

- nxp,wr_low: WR_LOW



Optional subnodes:

- Partitions, see Documentation/devicetree/bindings/mtd/partition.txt



Example:



	mlc: flash@200A8000 {

		compatible = "nxp,lpc3220-mlc";

		reg = <0x200A8000 0x11000>;

		interrupts = <11 0>;

		#address-cells = <1>;

		#size-cells = <1>;



		nxp,tcea-delay = <333333333>;

		nxp,busy-delay = <10000000>;

		nxp,nand-ta = <18181818>;

		nxp,rd-high = <31250000>;

		nxp,rd-low = <45454545>;

		nxp,wr-high = <40000000>;

		nxp,wr-low = <83333333>;

		gpios = <&gpio 5 19 1>; /* GPO_P3 19, active low */



		mtd0@00000000 {

			label = "boot";

			reg = <0x00000000 0x00064000>;

			read-only;

		};



		...



	};

drivers/mtd/nand/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -425,6 +425,17 @@ config MTD_NAND_SLC_LPC32XX 
	  Please check the actual NAND chip connected and its support

	  by the SLC NAND controller.



config MTD_NAND_MLC_LPC32XX

	tristate "NXP LPC32xx MLC Controller"

	depends on ARCH_LPC32XX

	help

	  Uses the LPC32XX MLC (i.e. for Multi Level Cell chips) NAND

	  controller. This is the default for the WORK92105 controller

	  board.



	  Please check the actual NAND chip connected and its support

	  by the MLC NAND controller.



config MTD_NAND_CM_X270

	tristate "Support for NAND Flash on CM-X270 modules"

	depends on MACH_ARMCORE

drivers/mtd/nand/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ obj-$(CONFIG_MTD_NAND_FSL_ELBC) += fsl_elbc_nand.o 
obj-$(CONFIG_MTD_NAND_FSL_IFC)		+= fsl_ifc_nand.o

obj-$(CONFIG_MTD_NAND_FSL_UPM)		+= fsl_upm.o

obj-$(CONFIG_MTD_NAND_SLC_LPC32XX)      += lpc32xx_slc.o

obj-$(CONFIG_MTD_NAND_MLC_LPC32XX)      += lpc32xx_mlc.o

obj-$(CONFIG_MTD_NAND_SH_FLCTL)		+= sh_flctl.o

obj-$(CONFIG_MTD_NAND_MXC)		+= mxc_nand.o

obj-$(CONFIG_MTD_NAND_SOCRATES)		+= socrates_nand.o

drivers/mtd/nand/lpc32xx_mlc.c

0 → 100644
+936 −0

File added.

Preview size limit exceeded, changes collapsed.