linux-kernel - [PATCH 05/14] arm64: zynqmp: Setup default si570 frequency to 156.25MHz

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Date: Mon, 8 Jan 2024 16:39:16 +0100
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
	<michal.simek@...inx.com>, <git@...inx.com>
CC: Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh+dt@...nel.org>, "open
 list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@...r.kernel.org>, "moderated list:ARM/ZYNQ ARCHITECTURE"
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 05/14] arm64: zynqmp: Setup default si570 frequency to 156.25MHz

All si570 mgt chips have factory default 156.25MHz but DT changed it to
148.5MHz. After tracking it is pretty much c&p fault taken from Zynq
zc702/zc706 boards where 148.5MHz was setup as default because it was
requirement for AD7511 chip available on these boards.
ZynqMP board don't contain this chip that's why factory default frequency
can be used.

Signed-off-by: Michal Simek <michal.simek@....com>
---

 arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts | 2 +-
 arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
index 55a8d3e9d44f..3b929c0eedcd 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
@@ -607,7 +607,7 @@ si570_2: clock-generator@5d { /* USER MGT SI570 - u56 */
 				reg = <0x5d>;
 				temperature-stability = <50>; /* copy from zc702 */
 				factory-fout = <156250000>;
-				clock-frequency = <148500000>;
+				clock-frequency = <156250000>;
 				clock-output-names = "si570_mgt";
 			};
 		};
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
index afc5571bf72b..03955aa708d4 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
@@ -609,7 +609,7 @@ si570_2: clock-generator@5d { /* USER MGT SI570 - u56 */
 				reg = <0x5d>;
 				temperature-stability = <50>; /* copy from zc702 */
 				factory-fout = <156250000>;
-				clock-frequency = <148500000>;
+				clock-frequency = <156250000>;
 				clock-output-names = "si570_mgt";
 			};
 		};
-- 
2.36.1