linux-kernel - [PATCH 5/6] arm64: dts: ipq5018: Add CMN PLL node

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Message-Id: <20250502-ipq5018-cmn-pll-v1-5-27902c1c4071@outlook.com>
Date: Fri, 02 May 2025 14:15:47 +0400
From: George Moussalem via B4 Relay <devnull+george.moussalem.outlook.com@...nel.org>
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>, Luo Jie <quic_luoj@...cinc.com>, 
 Lee Jones <lee@...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, 
 George Moussalem <george.moussalem@...look.com>
Subject: [PATCH 5/6] arm64: dts: ipq5018: Add CMN PLL node

From: George Moussalem <george.moussalem@...look.com>

Add CMN PLL node for enabling output clocks to the networking
hardware blocks on IPQ5018 devices.

The reference clock of CMN PLL is routed from XO to the CMN PLL
through the internal WiFi block.
.XO (96 MHZ)-->WiFi (multiplier/divider)--> 48 MHZ to CMN PLL.

Signed-off-by: George Moussalem <george.moussalem@...look.com>
---
 arch/arm64/boot/dts/qcom/ipq5018.dtsi | 39 +++++++++++++++++++++++++++++++++--
 1 file changed, 37 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
index 8914f2ef0bc47fda243b19174f77ce73fc10757d..78368600ba44825b38f737a6d7837a80dc32efb6 100644
--- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
@@ -2,12 +2,13 @@
 /*
  * IPQ5018 SoC device tree source
  *
- * Copyright (c) 2023 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023-2025 The Linux Foundation. All rights reserved.
  */
 
 #include <dt-bindings/clock/qcom,apss-ipq.h>
-#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/qcom,ipq5018-cmn-pll.h>
 #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
 
 / {
@@ -16,6 +17,14 @@ / {
 	#size-cells = <2>;
 
 	clocks {
+		ref_96mhz_clk: ref-96mhz-clk {
+			compatible = "fixed-factor-clock";
+			clocks = <&xo_clk>;
+			#clock-cells = <0>;
+			clock-div = <1>;
+			clock-mult = <2>;
+		};
+
 		sleep_clk: sleep-clk {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
@@ -25,6 +34,12 @@ xo_board_clk: xo-board-clk {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
 		};
+
+		xo_clk: xo-clk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <48000000>;
+		};
 	};
 
 	cpus {
@@ -147,6 +162,21 @@ usbphy0: phy@...00 {
 			status = "disabled";
 		};
 
+		cmn_pll: clock-controller@...00 {
+			compatible = "qcom,ipq5018-cmn-pll";
+			reg = <0 0x0009b000 0 0x800>;
+			clocks = <&ref_96mhz_clk>,
+				 <&gcc GCC_CMN_BLK_AHB_CLK>,
+				 <&gcc GCC_CMN_BLK_SYS_CLK>;
+			clock-names = "ref",
+				      "ahb",
+				      "sys";
+			#clock-cells = <1>;
+			assigned-clocks = <&cmn_pll IPQ5018_CMN_PLL_CLK>;
+			assigned-clock-rates-u64 = /bits/ 64 <9600000000>;
+			qcom,cmn-pll-eth-enable = <&tcsr 0x105c0>;
+		};
+
 		tlmm: pinctrl@...0000 {
 			compatible = "qcom,ipq5018-tlmm";
 			reg = <0x01000000 0x300000>;
@@ -187,6 +217,11 @@ tcsr_mutex: hwlock@...5000 {
 			#hwlock-cells = <1>;
 		};
 
+		tcsr: syscon@...7000 {
+			compatible = "qcom,tcsr-ipq5018", "syscon";
+			reg = <0x01937000 0x21000>;
+		};
+
 		sdhc_1: mmc@...4000 {
 			compatible = "qcom,ipq5018-sdhci", "qcom,sdhci-msm-v5";
 			reg = <0x7804000 0x1000>;

-- 
2.49.0