linux-kernel - [PATCH v4 2/4] arm64: dts: exynos: add initial CMU clock nodes in ExynosAuto v920

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Message-ID: <20240722223333.1137947-3-sunyeal.hong@samsung.com>
Date: Tue, 23 Jul 2024 07:33:31 +0900
From: Sunyeal Hong <sunyeal.hong@...sung.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Sylwester Nawrocki
	<s.nawrocki@...sung.com>, Chanwoo Choi <cw00.choi@...sung.com>, Alim Akhtar
	<alim.akhtar@...sung.com>, Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>
Cc: linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Sunyeal Hong <sunyeal.hong@...sung.com>
Subject: [PATCH v4 2/4] arm64: dts: exynos: add initial CMU clock nodes in
 ExynosAuto v920

Add cmu_top, cmu_peric0 clock nodes and
switch USI clocks instead of dummy fixed-rate-clock.

Signed-off-by: Sunyeal Hong <sunyeal.hong@...sung.com>
---
 .../arm64/boot/dts/exynos/exynosautov920.dtsi | 40 +++++++++++++------
 1 file changed, 27 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
index c1c8566d74f5..54fc32074379 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
@@ -6,6 +6,7 @@
  *
  */
 
+#include <dt-bindings/clock/samsung,exynosautov920.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/soc/samsung,exynos-usi.h>
 
@@ -38,17 +39,6 @@ xtcxo: clock {
 		clock-output-names = "oscclk";
 	};
 
-	/*
-	 * FIXME: Keep the stub clock for serial driver, until proper clock
-	 * driver is implemented.
-	 */
-	clock_usi: clock-usi {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <200000000>;
-		clock-output-names = "usi";
-	};
-
 	cpus: cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
@@ -182,6 +172,28 @@ chipid@...00000 {
 			reg = <0x10000000 0x24>;
 		};
 
+		cmu_peric0: clock-controller@...00000 {
+			compatible = "samsung,exynosautov920-cmu-peric0";
+			reg = <0x10800000 0x8000>;
+			#clock-cells = <1>;
+
+			clocks = <&xtcxo>,
+				 <&cmu_top DOUT_CLKCMU_PERIC0_NOC>,
+				 <&cmu_top DOUT_CLKCMU_PERIC0_IP>;
+			clock-names = "oscclk",
+				      "noc",
+				      "ip";
+		};
+
+		cmu_top: clock-controller@...00000 {
+			compatible = "samsung,exynosautov920-cmu-top";
+			reg = <0x11000000 0x8000>;
+			#clock-cells = <1>;
+
+			clocks = <&xtcxo>;
+			clock-names = "oscclk";
+		};
+
 		gic: interrupt-controller@...00000 {
 			compatible = "arm,gic-v3";
 			#interrupt-cells = <3>;
@@ -213,7 +225,8 @@ usi_0: usi@...800c0 {
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;
-			clocks = <&clock_usi>, <&clock_usi>;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI00_USI>;
 			clock-names = "pclk", "ipclk";
 			status = "disabled";
 
@@ -224,7 +237,8 @@ serial_0: serial@...80000 {
 				interrupts = <GIC_SPI 764 IRQ_TYPE_LEVEL_HIGH>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&uart0_bus>;
-				clocks = <&clock_usi>, <&clock_usi>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI00_USI>;
 				clock-names = "uart", "clk_uart_baud0";
 				samsung,uart-fifosize = <256>;
 				status = "disabled";
-- 
2.45.2