summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/mtd/gpmi-nand.txt
diff options
context:
space:
mode:
Diffstat (limited to 'dts/Bindings/mtd/gpmi-nand.txt')
-rw-r--r--dts/Bindings/mtd/gpmi-nand.txt75
1 files changed, 0 insertions, 75 deletions
diff --git a/dts/Bindings/mtd/gpmi-nand.txt b/dts/Bindings/mtd/gpmi-nand.txt
deleted file mode 100644
index 393588385c..0000000000
--- a/dts/Bindings/mtd/gpmi-nand.txt
+++ /dev/null
@@ -1,75 +0,0 @@
-* Freescale General-Purpose Media Interface (GPMI)
-
-The GPMI nand controller provides an interface to control the
-NAND flash chips.
-
-Required properties:
- - compatible : should be "fsl,<chip>-gpmi-nand", chip can be:
- * imx23
- * imx28
- * imx6q
- * imx6sx
- * imx7d
- - reg : should contain registers location and length for gpmi and bch.
- - reg-names: Should contain the reg names "gpmi-nand" and "bch"
- - interrupts : BCH interrupt number.
- - interrupt-names : Should be "bch".
- - dmas: DMA specifier, consisting of a phandle to DMA controller node
- and GPMI DMA channel ID.
- Refer to dma.txt and fsl-mxs-dma.txt for details.
- - dma-names: Must be "rx-tx".
- - clocks : clocks phandle and clock specifier corresponding to each clock
- specified in clock-names.
- - clock-names : The "gpmi_io" clock is always required. Which clocks are
- exactly required depends on chip:
- * imx23/imx28 : "gpmi_io"
- * imx6q/sx : "gpmi_io", "gpmi_apb", "gpmi_bch", "gpmi_bch_apb", "per1_bch"
- * imx7d : "gpmi_io", "gpmi_bch_apb"
-
-Optional properties:
- - nand-on-flash-bbt: boolean to enable on flash bbt option if not
- present false
- - fsl,use-minimum-ecc: Protect this NAND flash with the minimum ECC
- strength required. The required ECC strength is
- automatically discoverable for some flash
- (e.g., according to the ONFI standard).
- However, note that if this strength is not
- discoverable or this property is not enabled,
- the software may chooses an implementation-defined
- ECC scheme.
- - fsl,no-blockmark-swap: Don't swap the bad block marker from the OOB
- area with the byte in the data area but rely on the
- flash based BBT for identifying bad blocks.
- NOTE: this is only valid in conjunction with
- 'nand-on-flash-bbt'.
- WARNING: on i.MX28 blockmark swapping cannot be
- disabled for the BootROM in the FCB. Thus,
- partitions written from Linux with this feature
- turned on may not be accessible by the BootROM
- code.
- - nand-ecc-strength: integer representing the number of bits to correct
- per ECC step. Needs to be a multiple of 2.
- - nand-ecc-step-size: integer representing the number of data bytes
- that are covered by a single ECC step. The driver
- supports 512 and 1024.
-
-The device tree may optionally contain sub-nodes describing partitions of the
-address space. See partition.txt for more detail.
-
-Examples:
-
-gpmi-nand@8000c000 {
- compatible = "fsl,imx28-gpmi-nand";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <0x8000c000 2000>, <0x8000a000 2000>;
- reg-names = "gpmi-nand", "bch";
- interrupts = <41>;
- interrupt-names = "bch";
- dmas = <&dma_apbh 4>;
- dma-names = "rx-tx";
-
- partition@0 {
- ...
- };
-};