mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-28 22:13:08 +00:00
6899385f41
This patch adds the documentation of the device tree bindings for the STM32 FMC2 NAND controller. Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>
59 lines
1.8 KiB
Text
59 lines
1.8 KiB
Text
STMicroelectronics Flexible Memory Controller 2 (FMC2)
|
|
NAND Interface
|
|
|
|
Required properties:
|
|
- compatible: Should be one of:
|
|
* st,stm32mp15-fmc2
|
|
- reg: NAND flash controller memory areas.
|
|
First region contains the register location.
|
|
Regions 2 to 4 respectively contain the data, command,
|
|
and address space for CS0.
|
|
Regions 5 to 7 contain the same areas for CS1.
|
|
- interrupts: The interrupt number
|
|
- pinctrl-0: Standard Pinctrl phandle (see: pinctrl/pinctrl-bindings.txt)
|
|
- clocks: The clock needed by the NAND flash controller
|
|
|
|
Optional properties:
|
|
- resets: Reference to a reset controller asserting the FMC controller
|
|
- dmas: DMA specifiers (see: dma/stm32-mdma.txt)
|
|
- dma-names: Must be "tx", "rx" and "ecc"
|
|
|
|
Optional children nodes:
|
|
Children nodes represent the available NAND chips.
|
|
|
|
Optional properties:
|
|
- nand-on-flash-bbt: see nand.txt
|
|
- nand-ecc-strength: see nand.txt
|
|
- nand-ecc-step-size: see nand.txt
|
|
|
|
The following ECC strength and step size are currently supported:
|
|
- nand-ecc-strength = <1>, nand-ecc-step-size = <512> (Hamming)
|
|
- nand-ecc-strength = <4>, nand-ecc-step-size = <512> (BCH4)
|
|
- nand-ecc-strength = <8>, nand-ecc-step-size = <512> (BCH8) (default)
|
|
|
|
Example:
|
|
|
|
fmc: nand-controller@58002000 {
|
|
compatible = "st,stm32mp15-fmc2";
|
|
reg = <0x58002000 0x1000>,
|
|
<0x80000000 0x1000>,
|
|
<0x88010000 0x1000>,
|
|
<0x88020000 0x1000>,
|
|
<0x81000000 0x1000>,
|
|
<0x89010000 0x1000>,
|
|
<0x89020000 0x1000>;
|
|
interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&rcc FMC_K>;
|
|
resets = <&rcc FMC_R>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&fmc_pins_a>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
nand@0 {
|
|
reg = <0>;
|
|
nand-on-flash-bbt;
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
};
|
|
};
|