From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Enable the VBATTB controller. It provides the clock for RTC.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v4:
- added assigned-clocks, assigned-clock-parents properties
- set vbattb_xtal status = "okay"
- collected tags

Changes in v3:
- updated patch description
- dropped vbattclk
- added renesas,vbattb-load-nanofarads on vbattb
- moved vbattb before vbattb_xtal

Changes in v2:
- none

 arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
index 21bfa4e03972..6be0ffdcb87e 100644
--- a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
@@ -5,6 +5,7 @@
  * Copyright (C) 2023 Renesas Electronics Corp.
  */
 
+#include <dt-bindings/clock/renesas,r9a08g045-vbattb.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
 
@@ -346,6 +347,18 @@ mux {
 	};
 };
 
+&vbattb {
+	assigned-clocks = <&vbattb VBATTB_MUX>;
+	assigned-clock-parents = <&vbattb VBATTB_XC>;
+	quartz-load-femtofarads = <12500>;
+	status = "okay";
+};
+
+&vbattb_xtal {
+	clock-frequency = <32768>;
+	status = "okay";
+};
+
 &wdt0 {
 	timeout-sec = <60>;
 	status = "okay";
-- 
2.39.2

Hi Claudiu,

On Sat, Oct 19, 2024 at 10:48 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Enable the VBATTB controller. It provides the clock for RTC.
>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v4:
> - added assigned-clocks, assigned-clock-parents properties
> - set vbattb_xtal status = "okay"
> - collected tags

Thanks for the update!

> --- a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
> +++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
> @@ -346,6 +347,18 @@ mux {
>         };
>  };
>
> +&vbattb {
> +       assigned-clocks = <&vbattb VBATTB_MUX>;
> +       assigned-clock-parents = <&vbattb VBATTB_XC>;
> +       quartz-load-femtofarads = <12500>;
> +       status = "okay";
> +};
> +
> +&vbattb_xtal {
> +       clock-frequency = <32768>;
> +       status = "okay";

With status not disabled in r9a08g045.dtsi, this line should not be needed.

> +};
> +
>  &wdt0 {
>         timeout-sec = <60>;
>         status = "okay";

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds