* [RFC] spi-gpio on Odroid-C2 board
@ 2017-01-29 10:33 Slawomir Stepien
2017-01-30 8:44 ` Neil Armstrong
0 siblings, 1 reply; 2+ messages in thread
From: Slawomir Stepien @ 2017-01-29 10:33 UTC (permalink / raw)
To: linus-amlogic
Hi
Are there any issues regarding using spi-gpio on Odroid-C2 board dts file?
I would like to use it but from what I can see dts still doesn't have it?
I tested something like this and is seems to works:
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 5d28e1cdc998..62104dcd48a6 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -135,6 +135,18 @@
compatible = "mmc-pwrseq-emmc";
reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
};
+
+ spi-gpio {
+ compatible = "spi-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ gpio-sck = <&gpio GPIOX_2 GPIO_ACTIVE_HIGH>;
+ gpio-miso = <&gpio GPIOX_4 GPIO_ACTIVE_HIGH>;
+ gpio-mosi = <&gpio GPIOX_7 GPIO_ACTIVE_HIGH>;
+ cs-gpios = <&gpio GPIOX_1 GPIO_ACTIVE_HIGH
+ &gpio GPIOY_14 GPIO_ACTIVE_HIGH>;
+ num-chipselects = <2>;
+ };
};
&scpi_clocks {
--
Slawomir Stepien
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [RFC] spi-gpio on Odroid-C2 board
2017-01-29 10:33 [RFC] spi-gpio on Odroid-C2 board Slawomir Stepien
@ 2017-01-30 8:44 ` Neil Armstrong
0 siblings, 0 replies; 2+ messages in thread
From: Neil Armstrong @ 2017-01-30 8:44 UTC (permalink / raw)
To: linus-amlogic
On 01/29/2017 11:33 AM, Slawomir Stepien wrote:
> Hi
>
> Are there any issues regarding using spi-gpio on Odroid-C2 board dts file?
> I would like to use it but from what I can see dts still doesn't have it?
>
> I tested something like this and is seems to works:
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
> index 5d28e1cdc998..62104dcd48a6 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
> @@ -135,6 +135,18 @@
> compatible = "mmc-pwrseq-emmc";
> reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
> };
> +
> + spi-gpio {
> + compatible = "spi-gpio";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + gpio-sck = <&gpio GPIOX_2 GPIO_ACTIVE_HIGH>;
> + gpio-miso = <&gpio GPIOX_4 GPIO_ACTIVE_HIGH>;
> + gpio-mosi = <&gpio GPIOX_7 GPIO_ACTIVE_HIGH>;
> + cs-gpios = <&gpio GPIOX_1 GPIO_ACTIVE_HIGH
> + &gpio GPIOY_14 GPIO_ACTIVE_HIGH>;
> + num-chipselects = <2>;
> + };
> };
>
> &scpi_clocks {
>
Hi Slawomir,
Thanks for testing the spi-gpio interface, but since these pins are not explicitely used
as SPI, there is no real need to have them in the upstream Odroid-C2 dts file.
Such entries should added locally for each local projects.
Neil
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-01-29 10:33 [RFC] spi-gpio on Odroid-C2 board Slawomir Stepien
2017-01-30 8:44 ` Neil Armstrong
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