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From: "Rob Herring (Arm)" <robh@kernel.org>
To: soc@kernel.org, Chanho Min <chanho.min@lge.com>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	 linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] arm64: dts: lg: Add missing PL011 "uartclk"
Date: Mon, 09 Jun 2025 16:54:57 -0500	[thread overview]
Message-ID: <20250609-dt-lg-fixes-v1-2-e210e797c2d7@kernel.org> (raw)
In-Reply-To: <20250609-dt-lg-fixes-v1-0-e210e797c2d7@kernel.org>

The PL011 IP has 2 clock inputs for UART core/baud and APB bus. The
LG131x SoCs are missing the core "uartclk". In this case, the Linux
driver uses single clock for both clock inputs. Let's assume that's how
the h/w is wired and make the DT reflect that.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
 arch/arm64/boot/dts/lg/lg131x.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/lg/lg131x.dtsi b/arch/arm64/boot/dts/lg/lg131x.dtsi
index dc4229bd9ebb..4cb1e4510897 100644
--- a/arch/arm64/boot/dts/lg/lg131x.dtsi
+++ b/arch/arm64/boot/dts/lg/lg131x.dtsi
@@ -128,24 +128,24 @@ uart0: serial@fe000000 {
 			compatible = "arm,pl011", "arm,primecell";
 			reg = <0x0 0xfe000000 0x1000>;
 			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_bus>;
-			clock-names = "apb_pclk";
+			clocks = <&clk_bus>, <&clk_bus>;
+			clock-names = "uartclk", "apb_pclk";
 			status = "disabled";
 		};
 		uart1: serial@fe100000 {
 			compatible = "arm,pl011", "arm,primecell";
 			reg = <0x0 0xfe100000 0x1000>;
 			interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_bus>;
-			clock-names = "apb_pclk";
+			clocks = <&clk_bus>, <&clk_bus>;
+			clock-names = "uartclk", "apb_pclk";
 			status = "disabled";
 		};
 		uart2: serial@fe200000 {
 			compatible = "arm,pl011", "arm,primecell";
 			reg = <0x0 0xfe200000 0x1000>;
 			interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_bus>;
-			clock-names = "apb_pclk";
+			clocks = <&clk_bus>, <&clk_bus>;
+			clock-names = "uartclk", "apb_pclk";
 			status = "disabled";
 		};
 		spi0: spi@fe800000 {

-- 
2.47.2


  parent reply	other threads:[~2025-06-09 21:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-09 21:54 [PATCH 0/2] arm64: dts: lg: DT cleanups Rob Herring (Arm)
2025-06-09 21:54 ` [PATCH 1/2] arm64: dts: lg: Refactor common LG1312 and LG1313 parts Rob Herring (Arm)
2025-06-09 21:54 ` Rob Herring (Arm) [this message]
2025-06-10  0:36 ` [PATCH 0/2] arm64: dts: lg: DT cleanups 민찬호/책임연구원/SW Platform(연)Advanced OS TP

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