mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 11:04:44 +08:00
a40df28c56
There are several DT doc references that require manual fixes. I found 3 cases fixed on this patch: - directory named "binding/" instead of "bindings/"; - .txt to .yaml renames; - file renames (still on txt format); Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
54 lines
1.7 KiB
Plaintext
54 lines
1.7 KiB
Plaintext
* Cadence NAND controller
|
|
|
|
Required properties:
|
|
- compatible : "cdns,hp-nfc"
|
|
- reg : Contains two entries, each of which is a tuple consisting of a
|
|
physical address and length. The first entry is the address and
|
|
length of the controller register set. The second entry is the
|
|
address and length of the Slave DMA data port.
|
|
- reg-names: should contain "reg" and "sdma"
|
|
- #address-cells: should be 1. The cell encodes the chip select connection.
|
|
- #size-cells : should be 0.
|
|
- interrupts : The interrupt number.
|
|
- clocks: phandle of the controller core clock (nf_clk).
|
|
|
|
Optional properties:
|
|
- dmas: shall reference DMA channel associated to the NAND controller
|
|
- cdns,board-delay-ps : Estimated Board delay. The value includes the total
|
|
round trip delay for the signals and is used for deciding on values
|
|
associated with data read capture. The example formula for SDR mode is
|
|
the following:
|
|
board delay = RE#PAD delay + PCB trace to device + PCB trace from device
|
|
+ DQ PAD delay
|
|
|
|
Child nodes represent the available NAND chips.
|
|
|
|
Required properties of NAND chips:
|
|
- reg: shall contain the native Chip Select ids from 0 to max supported by
|
|
the cadence nand flash controller
|
|
|
|
See Documentation/devicetree/bindings/mtd/nand-controller.yaml for more details on
|
|
generic bindings.
|
|
|
|
Example:
|
|
|
|
nand_controller: nand-controller@60000000 {
|
|
compatible = "cdns,hp-nfc";
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
reg = <0x60000000 0x10000>, <0x80000000 0x10000>;
|
|
reg-names = "reg", "sdma";
|
|
clocks = <&nf_clk>;
|
|
cdns,board-delay-ps = <4830>;
|
|
interrupts = <2 0>;
|
|
nand@0 {
|
|
reg = <0>;
|
|
label = "nand-1";
|
|
};
|
|
nand@1 {
|
|
reg = <1>;
|
|
label = "nand-2";
|
|
};
|
|
|
|
};
|