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From: Tudor Ambarus <tudor.ambarus@linaro.org>
To: peter.griffin@linaro.org,
	mturquette@baylibre.com,
	sboyd@kernel.org,
	robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org,
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Cc: andi.shyti@kernel.org,
	alim.akhtar@samsung.com,
	s.nawrocki@samsung.com,
	tomasz.figa@gmail.com,
	cw00.choi@samsung.com,
	linux-arm-kernel@lists.infradead.org,
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	devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-i2c@vger.kernel.org,
	andre.draszik@linaro.org,
	semen.protsenko@linaro.org,
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	Tudor Ambarus <tudor.ambarus@linaro.org>
Subject: [PATCH v4 6/8] arm64: dts: exynos: gs101: update USI UART to use peric0 clocks
Date: Fri, 19 Jan 2024 11:11:30 +0000
Message-ID: <20240119111132.1290455-7-tudor.ambarus@linaro.org>
In-Reply-To: <20240119111132.1290455-1-tudor.ambarus@linaro.org>
References: <20240119111132.1290455-1-tudor.ambarus@linaro.org>
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Get rid of the dummy clock and start using the cmu_peric0 clocks
for the usi_uart and serial_0 nodes.

Tested the serial at 115200, 1000000 and 3000000 baudrates,
everthing went fine.

Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 2d1344a202a9..6aa25cc4676e 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -180,14 +180,6 @@ HERA_CPU_SLEEP: cpu-hera-sleep {
 		};
 	};
 
-	/* TODO replace with CCF clock */
-	dummy_clk: clock-3 {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <12345>;
-		clock-output-names = "pclk";
-	};
-
 	/* ect node is required to be present by bootloader */
 	ect {
 	};
@@ -367,7 +359,8 @@ usi_uart: usi@10a000c0 {
 			ranges;
 			#address-cells = <1>;
 			#size-cells = <1>;
-			clocks = <&dummy_clk>, <&dummy_clk>;
+			clocks = <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI0_UART_CLK>,
+				 <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
 			clock-names = "pclk", "ipclk";
 			samsung,sysreg = <&sysreg_peric0 0x1020>;
 			samsung,mode = <USI_V2_UART>;
@@ -378,7 +371,8 @@ serial_0: serial@10a00000 {
 				reg = <0x10a00000 0xc0>;
 				interrupts = <GIC_SPI 634
 					      IRQ_TYPE_LEVEL_HIGH 0>;
-				clocks = <&dummy_clk 0>, <&dummy_clk 0>;
+				clocks = <&cmu_peric0 CLK_GOUT_PERIC0_CLK_PERIC0_USI0_UART_CLK>,
+					 <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
 				clock-names = "uart", "clk_uart_baud0";
 				samsung,uart-fifosize = <256>;
 				status = "disabled";
-- 
2.43.0.429.g432eaa2c6b-goog