From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-renesas-soc@vger.kernel.org
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Magnus Damm <magnus.damm@gmail.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: [PATCH 4/9] arm64: dts: renesas: s4: mark SWDT as reserved
Date: Mon, 6 Oct 2025 10:25:22 +0200 [thread overview]
Message-ID: <20251006082520.10570-15-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20251006082520.10570-11-wsa+renesas@sang-engineering.com>
This watchdog can't be used with Linux because the firmware needs it on
S4 boards. Sadly, it doesn't mark the node as reserved, so this is added
manually here.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 5 +++++
arch/arm64/boot/dts/renesas/r8a779f4-s4sk.dts | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
index 1781bb79a619..c8d78a0f6653 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
@@ -229,6 +229,11 @@ &scif_clk {
clock-frequency = <24000000>;
};
+/* Firmware should reserve it but sadly doesn't */
+&swdt {
+ status = "reserved";
+};
+
&ufs {
status = "okay";
};
diff --git a/arch/arm64/boot/dts/renesas/r8a779f4-s4sk.dts b/arch/arm64/boot/dts/renesas/r8a779f4-s4sk.dts
index 67b18f2bffbd..dcdcc22f91c5 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f4-s4sk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779f4-s4sk.dts
@@ -230,6 +230,11 @@ &scif_clk {
clock-frequency = <24000000>;
};
+/* Firmware should reserve it but sadly doesn't */
+&swdt {
+ status = "reserved";
+};
+
&ufs {
status = "okay";
};
--
2.47.2
next prev parent reply other threads:[~2025-10-06 8:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-06 8:25 [PATCH 0/9] arm64: dts: renesas: gen4: handle SWDT Wolfram Sang
2025-10-06 8:25 ` [PATCH 1/9] arm64: dts: renesas: r8a779a0: add SWDT node Wolfram Sang
2025-10-06 15:33 ` Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 2/9] arm64: dts: renesas: falcon: mark SWDT as reserved Wolfram Sang
2025-10-06 15:33 ` Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 3/9] arm64: dts: renesas: r8a779f0: add SWDT node Wolfram Sang
2025-10-06 15:34 ` Geert Uytterhoeven
2025-10-06 8:25 ` Wolfram Sang [this message]
2025-10-06 15:34 ` [PATCH 4/9] arm64: dts: renesas: s4: mark SWDT as reserved Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 5/9] arm64: dts: renesas: r8a779g0: add SWDT node Wolfram Sang
2025-10-06 15:35 ` Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 6/9] arm64: dts: renesas: white-hawk: Enable RWDT watchdog timer Wolfram Sang
2025-10-06 15:21 ` Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 7/9] arm64: dts: renesas: v4h: mark SWDT as reserved Wolfram Sang
2025-10-06 15:39 ` Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 8/9] arm64: dts: renesas: r8a779h0: add SWDT node Wolfram Sang
2025-10-06 15:40 ` Geert Uytterhoeven
2025-10-06 8:25 ` [PATCH 9/9] arm64: dts: renesas: gray-hawk: mark SWDT as reserved Wolfram Sang
2025-10-06 15:40 ` Geert Uytterhoeven
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