linux-kernel - [PATCH v3 4/4] arm64: dts: qcom: Update IPQ5424 xo

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Message-ID: <20250610-qcom_ipq5424_cmnpll-v3-4-ceada8165645@quicinc.com>
Date: Tue, 10 Jun 2025 18:35:21 +0800
From: Luo Jie <quic_luoj@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette
	<mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_kkumarcs@...cinc.com>, <quic_suruchia@...cinc.com>,
        <quic_pavir@...cinc.com>, <quic_linchen@...cinc.com>,
        <quic_leiwei@...cinc.com>, Luo Jie <quic_luoj@...cinc.com>,
        Konrad Dybcio
	<konrad.dybcio@....qualcomm.com>
Subject: [PATCH v3 4/4] arm64: dts: qcom: Update IPQ5424 xo_board to use
 fixed factor clock

xo_board is fixed to 24 MHZ, which is routed from WiFi output clock
48 MHZ (also being the reference clock of CMN PLL) divided 2 by
analog block routing channel.

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Luo Jie <quic_luoj@...cinc.com>
---
 arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts | 7 ++++++-
 arch/arm64/boot/dts/qcom/ipq5424.dtsi       | 3 ++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
index 5ca578904f85..117f1785e8b8 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
+++ b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
@@ -264,8 +264,13 @@ &ref_48mhz_clk {
 	clock-mult = <1>;
 };
 
+/*
+ * The frequency of xo_board is fixed to 24 MHZ, which is routed
+ * from WiFi output clock 48 MHZ divided by 2.
+ */
 &xo_board {
-	clock-frequency = <24000000>;
+	clock-div = <2>;
+	clock-mult = <1>;
 };
 
 &xo_clk {
diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
index 13c641fced8f..2eea8a078595 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
@@ -31,7 +31,8 @@ sleep_clk: sleep-clk {
 		};
 
 		xo_board: xo-board-clk {
-			compatible = "fixed-clock";
+			compatible = "fixed-factor-clock";
+			clocks = <&ref_48mhz_clk>;
 			#clock-cells = <0>;
 		};
 

-- 
2.34.1