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Freescale's Integrated Flash controller (IFC) may have one or two interrupts. In case of single interrupt line, it will cover all IFC interrupts. Update this information in IFC device tree bindings Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
80 lines
2.2 KiB
Plaintext
80 lines
2.2 KiB
Plaintext
Integrated Flash Controller
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Properties:
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- name : Should be ifc
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- compatible : should contain "fsl,ifc". The version of the integrated
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flash controller can be found in the IFC_REV register at
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offset zero.
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- #address-cells : Should be either two or three. The first cell is the
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chipselect number, and the remaining cells are the
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offset into the chipselect.
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- #size-cells : Either one or two, depending on how large each chipselect
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can be.
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- reg : Offset and length of the register set for the device
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- interrupts: IFC may have one or two interrupts. If two interrupt
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specifiers are present, the first is the "common"
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interrupt (CM_EVTER_STAT), and the second is the NAND
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interrupt (NAND_EVTER_STAT). If there is only one,
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that interrupt reports both types of event.
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- ranges : Each range corresponds to a single chipselect, and covers
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the entire access window as configured.
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Child device nodes describe the devices connected to IFC such as NOR (e.g.
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cfi-flash) and NAND (fsl,ifc-nand). There might be board specific devices
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like FPGAs, CPLDs, etc.
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Example:
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ifc@ffe1e000 {
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compatible = "fsl,ifc", "simple-bus";
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#address-cells = <2>;
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#size-cells = <1>;
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reg = <0x0 0xffe1e000 0 0x2000>;
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interrupts = <16 2 19 2>;
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/* NOR, NAND Flashes and CPLD on board */
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ranges = <0x0 0x0 0x0 0xee000000 0x02000000
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0x1 0x0 0x0 0xffa00000 0x00010000
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0x3 0x0 0x0 0xffb00000 0x00020000>;
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flash@0,0 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "cfi-flash";
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reg = <0x0 0x0 0x2000000>;
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bank-width = <2>;
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device-width = <1>;
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partition@0 {
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/* 32MB for user data */
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reg = <0x0 0x02000000>;
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label = "NOR Data";
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};
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};
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flash@1,0 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "fsl,ifc-nand";
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reg = <0x1 0x0 0x10000>;
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partition@0 {
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/* This location must not be altered */
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/* 1MB for u-boot Bootloader Image */
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reg = <0x0 0x00100000>;
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label = "NAND U-Boot Image";
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read-only;
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};
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};
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cpld@3,0 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "fsl,p1010rdb-cpld";
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reg = <0x3 0x0 0x000001f>;
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};
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};
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