linux-kernel - [PATCH v6 4/6] arm64: dts: renesas: rzg3s-smarc-som: Add PCIe reference clock

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Message-ID: <20251029133653.2437024-5-claudiu.beznea.uj@bp.renesas.com>
Date: Wed, 29 Oct 2025 15:36:51 +0200
From: Claudiu <claudiu.beznea@...on.dev>
To: lpieralisi@...nel.org,
	kwilczynski@...nel.org,
	mani@...nel.org,
	robh@...nel.org,
	bhelgaas@...gle.com,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	geert+renesas@...der.be,
	magnus.damm@...il.com,
	p.zabel@...gutronix.de
Cc: claudiu.beznea@...on.dev,
	linux-pci@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v6 4/6] arm64: dts: renesas: rzg3s-smarc-som: Add PCIe reference clock

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

Versa3 clock generator available on RZ/G3S SMARC Module provides the
reference clock for SoC PCIe interface. Update the device tree to reflect
this connection.

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

Changes in v6:
- collected tags

Changes in v5:
- this patch is the result of dropping the updates to dma-ranges for
  secure area and keeping only the remaining bits

 arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
index 6f25ab617982..982f17aafbc5 100644
--- a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
@@ -168,6 +168,11 @@ a0 80 30 30 9c
 	};
 };
 
+&pcie_port0 {
+	clocks = <&versa3 5>;
+	clock-names = "ref";
+};
+
 #if SW_CONFIG2 == SW_ON
 /* SD0 slot */
 &sdhi0 {
-- 
2.43.0