linux-kernel - [PATCH v4 08/12] arm64: dts: renesas: r9a08g045: Add VBATTB node

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Message-Id: <20241019084738.3370489-9-claudiu.beznea.uj@bp.renesas.com>
Date: Sat, 19 Oct 2024 11:47:34 +0300
From: Claudiu <claudiu.beznea@...on.dev>
To: geert+renesas@...der.be,
	mturquette@...libre.com,
	sboyd@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	alexandre.belloni@...tlin.com,
	magnus.damm@...il.com,
	p.zabel@...gutronix.de
Cc: linux-renesas-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-rtc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	claudiu.beznea@...on.dev,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v4 08/12] arm64: dts: renesas: r9a08g045: Add VBATTB node

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

Add the DT node for the VBATTB IP along with DT bindings for the clock
it provides.

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

Changes in v4:
- used clock-controller for the vbattb node name
- move the node near scif0 for ordering
- set the vbattb_xtal status as disabled to avoid having it exported
  in linux with frequency = 0 in boards that don't use it
- collected tags

Changes in v3:
- dropped the child nodes of vbattb; along with this dropped ranges,
  interrupt-names, #address-cells, #size-cells
- added vbattb_xtal as input clock for vbattb

Changes in v2:
- update compatibles
- updated clocks and clock-names for clock-controller node
- removed the power domain from the clock-controller as this is
  controlled by parent node in v2

 arch/arm64/boot/dts/renesas/r9a08g045.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a08g045.dtsi b/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
index 067a26a66c24..827db9f61802 100644
--- a/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
@@ -72,6 +72,18 @@ scif0: serial@...4b800 {
 			status = "disabled";
 		};
 
+		vbattb: clock-controller@...5c000 {
+			compatible = "renesas,r9a08g045-vbattb";
+			reg = <0 0x1005c000 0 0x1000>;
+			interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD R9A08G045_VBAT_BCLK>, <&vbattb_xtal>;
+			clock-names = "bclk", "rtx";
+			#clock-cells = <1>;
+			power-domains = <&cpg>;
+			resets = <&cpg R9A08G045_VBAT_BRESETN>;
+			status = "disabled";
+		};
+
 		i2c0: i2c@...90000 {
 			compatible = "renesas,riic-r9a08g045", "renesas,riic-r9a09g057";
 			reg = <0 0x10090000 0 0x400>;
@@ -425,4 +437,12 @@ timer {
 		interrupt-names = "sec-phys", "phys", "virt", "hyp-phys",
 				  "hyp-virt";
 	};
+
+	vbattb_xtal: vbattb-xtal {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		/* This value must be overridden by the board. */
+		clock-frequency = <0>;
+		status = "disabled";
+	};
 };
-- 
2.39.2