| Message ID | 1522836371-2828-4-git-send-email-yogeshnarayan.gaur@nxp.com |
|---|---|
| State | Changes Requested |
| Delegated to: | Cyrille Pitchen |
| Headers | show |
| Series | mtd: spi-nor: Add NXP FlexSPI driver | expand |
On 04/04/2018 12:06 PM, Yogesh Gaur wrote: > Added binding file for NXP FlexSPI driver in Documentation folder. What's a "folder" ? > Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com> > --- > .../devicetree/bindings/mtd/nxp-flexspi.txt | 40 ++++++++++++++++++++++ > 1 file changed, 40 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mtd/nxp-flexspi.txt > > diff --git a/Documentation/devicetree/bindings/mtd/nxp-flexspi.txt b/Documentation/devicetree/bindings/mtd/nxp-flexspi.txt > new file mode 100644 > index 0000000..23817dc > --- /dev/null > +++ b/Documentation/devicetree/bindings/mtd/nxp-flexspi.txt > @@ -0,0 +1,40 @@ > +* NXP Flex Serial Peripheral Interface(FlexSPI) > + > +Required properties: > + - compatible : Should be "nxp,lx2160a-fspi" > + - reg : the first contains the register location and length, > + the second contains the memory mapping address and length > + - reg-names: Should contain the reg names "FSPI" and "FSPI-memory" This should be lowercase. > + - interrupts : Should contain the interrupt for the device > + > +Optional properties: > + - nxp,fspi-has-second-chip: The controller has two buses, bus A and bus B. > + Each bus can be connected with two NOR flashes. > + Most of the time, each bus only has one NOR flash > + connected, this is the default case. > + But if there are two NOR flashes connected to the > + bus, you should enable this property. > + ( Please check the board's schematic.) Can't you model this by specifying two chips in the DT ? > + - big-endian : That means the IP register is big endian. If not specified, > + IP register works in little endian mode. > + > +Example: > +fspi0: flexspi@20c0000 { > + compatible = "nxp,lx2160a-fspi"; > + reg = <0x0 0x20c0000 0x0 0x10000>, <0x0 0x20000000 0x0 0x10000000>; > + reg-names = "FSPI", "FSPI-memory"; > + interrupts = <0 25 0x4>; /* Level high type */ > + > + status = "okay"; > + nxp,fspi-has-second-chip; > + flash0: mt35xu512aba@0 { > + reg = <0>; > + .... > + }; > + > + flash1: mt35xu512aba@1 { > + reg = <1>; > + .... > + }; > + > +}; >
diff --git a/Documentation/devicetree/bindings/mtd/nxp-flexspi.txt b/Documentation/devicetree/bindings/mtd/nxp-flexspi.txt new file mode 100644 index 0000000..23817dc --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/nxp-flexspi.txt @@ -0,0 +1,40 @@ +* NXP Flex Serial Peripheral Interface(FlexSPI) + +Required properties: + - compatible : Should be "nxp,lx2160a-fspi" + - reg : the first contains the register location and length, + the second contains the memory mapping address and length + - reg-names: Should contain the reg names "FSPI" and "FSPI-memory" + - interrupts : Should contain the interrupt for the device + +Optional properties: + - nxp,fspi-has-second-chip: The controller has two buses, bus A and bus B. + Each bus can be connected with two NOR flashes. + Most of the time, each bus only has one NOR flash + connected, this is the default case. + But if there are two NOR flashes connected to the + bus, you should enable this property. + ( Please check the board's schematic.) + - big-endian : That means the IP register is big endian. If not specified, + IP register works in little endian mode. + +Example: +fspi0: flexspi@20c0000 { + compatible = "nxp,lx2160a-fspi"; + reg = <0x0 0x20c0000 0x0 0x10000>, <0x0 0x20000000 0x0 0x10000000>; + reg-names = "FSPI", "FSPI-memory"; + interrupts = <0 25 0x4>; /* Level high type */ + + status = "okay"; + nxp,fspi-has-second-chip; + flash0: mt35xu512aba@0 { + reg = <0>; + .... + }; + + flash1: mt35xu512aba@1 { + reg = <1>; + .... + }; + +};
Added binding file for NXP FlexSPI driver in Documentation folder. Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com> --- .../devicetree/bindings/mtd/nxp-flexspi.txt | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/nxp-flexspi.txt