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Groups > linux.kernel > #1547460
| From | Chen-Yu Tsai <wens@csie.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2] ARM: dts: sunxi: Add num-cs for A20 spi nodes |
| Date | 2016-12-27 03:20 +0100 |
| Message-ID | <sSPwR-4qF-7@gated-at.bofh.it> (permalink) |
| References | <sSHzk-7KX-31@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi,
On Tue, Dec 27, 2016 at 1:47 AM, Emmanuel Vadot <manu@bidouilliste.com> wrote:
> The spi0 controller on the A20 have up to 4 CS (Chip Select) while the
> others three only have 1.
> Add the num-cs property to each node.
> The current driver doesn't read this property but this is useful for
> downstream user of DTS (FreeBSD for example).
>
> Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com>
> ---
>
> Changes in v2:
> * Explain that driver doesn't support this but that it is useful
> for downstream users of DTS.
>
> arch/arm/boot/dts/sun7i-a20.dtsi | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
> index 94cf5a1c7172..ed21982c81cb 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -871,6 +871,7 @@
> status = "disabled";
> #address-cells = <1>;
> #size-cells = <0>;
> + num-cs = 4;
The numbers need to be enclosed in angle brackets.
ChenYu
> };
>
> spi1: spi@01c06000 {
> @@ -885,6 +886,7 @@
> status = "disabled";
> #address-cells = <1>;
> #size-cells = <0>;
> + num-cs = 1;
> };
>
> emac: ethernet@01c0b000 {
> @@ -1037,6 +1039,7 @@
> status = "disabled";
> #address-cells = <1>;
> #size-cells = <0>;
> + num-cs = 1;
> };
>
> ahci: sata@01c18000 {
> @@ -1079,6 +1082,7 @@
> status = "disabled";
> #address-cells = <1>;
> #size-cells = <0>;
> + num-cs = 1;
> };
>
> pio: pinctrl@01c20800 {
> --
> 2.11.0
>
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[PATCH v2] ARM: dts: sunxi: Add num-cs for A20 spi nodes Emmanuel Vadot <manu@bidouilliste.com> - 2016-12-26 18:50 +0100 Re: [PATCH v2] ARM: dts: sunxi: Add num-cs for A20 spi nodes kbuild test robot <lkp@intel.com> - 2016-12-26 20:40 +0100 Re: [PATCH v2] ARM: dts: sunxi: Add num-cs for A20 spi nodes Chen-Yu Tsai <wens@csie.org> - 2016-12-27 03:20 +0100
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