[6/7] arm64: allwinner: h6: Add RTC clock to phandle 32kHz external oscillator
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Message ID 20181031183634.29640-6-jagan@amarulasolutions.com
State New
Headers show
Series
  • [1/7] clk: sunxi-ng: sun50i: h6: Fix MMC clock mux width
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Commit Message

Jagan Teki Oct. 31, 2018, 6:36 p.m. UTC
From: Jagan Teki <jagan@openedev.com>

Outside of SOC few chips need external clock source through RTC example
Wifi chip. So H6 RTC clock node need to phandle 32kHz external oscillator
like A64 RTC.

Add support for it.

prefix rtc- with clock-output-names defined in dt-binding to avoid
confusion with existing osc32k name.

Signed-off-by: Jagan Teki <jagan@openedev.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 3 +++
 1 file changed, 3 insertions(+)

Comments

Chen-Yu Tsai Nov. 1, 2018, 2:57 a.m. UTC | #1
On Thu, Nov 1, 2018 at 2:37 AM Jagan Teki <jagan@amarulasolutions.com> wrote:
>
> From: Jagan Teki <jagan@openedev.com>
>
> Outside of SOC few chips need external clock source through RTC example
> Wifi chip. So H6 RTC clock node need to phandle 32kHz external oscillator
> like A64 RTC.
>
> Add support for it.

This should be part of the previous patch.

> prefix rtc- with clock-output-names defined in dt-binding to avoid
> confusion with existing osc32k name.

Unfortunately we have a not so documented requirement that the actual
LOSC be named "osc32k", which is why you see all the previous dtsi files
with RTC clock outputs having the external 32k crystal named "ext-osc32k".

ChenYu

> Signed-off-by: Jagan Teki <jagan@openedev.com>
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> index c8d2fe76da7e..028ec286aa0a 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> @@ -271,6 +271,9 @@
>                         reg = <0x7000000 0x400>;
>                         interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
>                                      <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
> +                       clock-output-names = "rtc-osc32k", "rtc-osc32k-out";
> +                       clocks = <&osc32k>;
> +                       #clock-cells = <1>;
>                 };
>
>                 r_ccu: clock@7010000 {
> --
> 2.18.0.321.gffc6fa0e3
>

Patch
diff mbox series

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index c8d2fe76da7e..028ec286aa0a 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -271,6 +271,9 @@ 
 			reg = <0x7000000 0x400>;
 			interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
+			clock-output-names = "rtc-osc32k", "rtc-osc32k-out";
+			clocks = <&osc32k>;
+			#clock-cells = <1>;
 		};
 
 		r_ccu: clock@7010000 {