linux-kernel - [PATCH 1/4] ARC: [plat-hsdk]: Set initial core pll output frequency

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Date:   Mon, 27 Nov 2017 21:56:08 +0300
From:   Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
To:     linux-snps-arc@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org,
        Vineet Gupta <Vineet.Gupta1@...opsys.com>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
Subject: [PATCH 1/4] ARC: [plat-hsdk]: Set initial core pll output frequency

Set initial core pll output frequency specified in device tree to
1GHz. It will be applied at the core pll driver probing.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
---
 arch/arc/boot/dts/hsdk.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index 8f627c2..006aa3d 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -114,6 +114,14 @@
 			reg = <0x00 0x10>, <0x14B8 0x4>;
 			#clock-cells = <0>;
 			clocks = <&input_clk>;
+
+			/*
+			 * Set initial core pll output frequency to 1GHz.
+			 * It will be applied at the core pll driver probing
+			 * on early boot.
+			 */
+			assigned-clocks = <&core_clk>;
+			assigned-clock-rates = <1000000000>;
 		};
 
 		serial: serial@...0 {
-- 
2.9.3