| Message ID | 20220210074546.30669-2-kavyasree.kotagiri@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add support for LAN966 SoC flexcom shared configurations | expand |
Hi, Kavya, On 2/10/22 09:45, Kavyasree Kotagiri wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > This adds LAN966 SoC DT bindings documentation for Flexcom > Shared and chip-select configurations. > > Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com> > --- > .../devicetree/bindings/mfd/atmel-flexcom.txt | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > Would you please convert the bindings file to yaml before adding new properties? You can find some guidelines at: https://www.kernel.org/doc/html/latest/devicetree/bindings/writing-schema.html Cheers, ta > diff --git a/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt b/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt > index 692300117c64..a76622082228 100644 > --- a/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt > +++ b/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt > @@ -18,6 +18,15 @@ Required properties: > - <2> for SPI > - <3> for I2C > > +Optional properties: > +- Flexcom shared configurations: Each flexcom of lan966 SoC has 2 chip selects. > + For each chip select, there is a pin configuration register. > + The width of the configuration register is 21 because there are 21 shared > + pins on each of which the chip select can be mapped. Each bit of the > + configuration register represents a different FLEXCOM_SHARED pin. > + - lan966x-ss-pin: Should be a flexcom shared pin. > + - lan966x-cs: Should be chip select 0 or 1. > + > Required child: > A single available child device of type matching the "atmel,flexcom-mode" > property. > @@ -41,6 +50,9 @@ flexcom@f8034000 { > #size-cells = <1>; > ranges = <0x0 0xf8034000 0x800>; > atmel,flexcom-mode = <2>; > + /* Map chip-select index 0 of the flexcom to FLEXCOM_SHARED 9 */ > + lan966x-ss-pin = <9>; > + lan966x-cs = <0>; > > spi@400 { > compatible = "atmel,at91rm9200-spi"; > -- > 2.17.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt b/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt index 692300117c64..a76622082228 100644 --- a/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt +++ b/Documentation/devicetree/bindings/mfd/atmel-flexcom.txt @@ -18,6 +18,15 @@ Required properties: - <2> for SPI - <3> for I2C +Optional properties: +- Flexcom shared configurations: Each flexcom of lan966 SoC has 2 chip selects. + For each chip select, there is a pin configuration register. + The width of the configuration register is 21 because there are 21 shared + pins on each of which the chip select can be mapped. Each bit of the + configuration register represents a different FLEXCOM_SHARED pin. + - lan966x-ss-pin: Should be a flexcom shared pin. + - lan966x-cs: Should be chip select 0 or 1. + Required child: A single available child device of type matching the "atmel,flexcom-mode" property. @@ -41,6 +50,9 @@ flexcom@f8034000 { #size-cells = <1>; ranges = <0x0 0xf8034000 0x800>; atmel,flexcom-mode = <2>; + /* Map chip-select index 0 of the flexcom to FLEXCOM_SHARED 9 */ + lan966x-ss-pin = <9>; + lan966x-cs = <0>; spi@400 { compatible = "atmel,at91rm9200-spi";
This adds LAN966 SoC DT bindings documentation for Flexcom Shared and chip-select configurations. Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com> --- .../devicetree/bindings/mfd/atmel-flexcom.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+)