linux-kernel - [PATCH] arm64: dts: exynos: move XTCXO clock frequency to board in Exynos Auto v9

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Date:   Tue,  3 May 2022 11:26:31 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Chanho Park <chanho61.park@...sung.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH] arm64: dts: exynos: move XTCXO clock frequency to board in Exynos Auto v9

The external oscillator - XTCXO - is an input to the SoC.  It is defined
in the Exynos Auto v9 SoC DTSI, because all boards will provide it and
clock controller bindings expect it, however the actual frequency of the
clock should be determined by the board.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts | 4 ++++
 arch/arm64/boot/dts/exynos/exynosautov9.dtsi     | 1 -
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts b/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
index 57518cb5e8c4..17e568853eb6 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
+++ b/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
@@ -58,3 +58,7 @@ &ufs_0 {
 &usi_0 {
 	status = "okay";
 };
+
+&xtcxo {
+	clock-frequency = <26000000>;
+};
diff --git a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
index 807d500d6022..68d087ed0459 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
@@ -153,7 +153,6 @@ fixed-rate-clocks {
 		xtcxo: clock {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
-			clock-frequency = <26000000>;
 			clock-output-names = "oscclk";
 		};
 
-- 
2.32.0