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From: "Pali Rohár" <pali@kernel.org>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Andrew Lunn" <andrew@lunn.ch>,
	"Gregory Clement" <gregory.clement@bootlin.com>,
	"Sebastian Hesselbarth" <sebastian.hesselbarth@gmail.com>,
	"Vladimir Vid" <vladimir.vid@sartura.hr>,
	"Marek Behún" <kabel@kernel.org>,
	linux-clk@vger.kernel.org, linux-serial@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Subject: [PATCH v6 5/6] arm64: dts: marvell: armada-37xx: add device node for UART clock and use it
Date: Wed, 29 Sep 2021 10:20:33 +0200	[thread overview]
Message-ID: <20210929082034.15098-6-pali@kernel.org> (raw)
In-Reply-To: <20210929082034.15098-1-pali@kernel.org>

This change defines DT node for UART clock "marvell,armada-3700-uart-clock"
and use this UART clock as a base clock for all UART devices.

Signed-off-by: Pali Rohár <pali@kernel.org>

---
Changes in v6:
* Do not disable uartclk by default
* Rename node to clock-controller@12010
---
 arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
index 9acc5d2b5a00..f9bfe73d8ec2 100644
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -132,10 +132,20 @@
 				reg = <0x11500 0x40>;
 			};
 
+			uartclk: clock-controller@12010 {
+				compatible = "marvell,armada-3700-uart-clock";
+				reg = <0x12010 0x4>, <0x12210 0x4>;
+				clocks = <&tbg 0>, <&tbg 1>, <&tbg 2>,
+					<&tbg 3>, <&xtalclk>;
+				clock-names = "TBG-A-P", "TBG-B-P", "TBG-A-S",
+					"TBG-B-S", "xtal";
+				#clock-cells = <1>;
+			};
+
 			uart0: serial@12000 {
 				compatible = "marvell,armada-3700-uart";
 				reg = <0x12000 0x18>;
-				clocks = <&xtalclk>;
+				clocks = <&uartclk 0>;
 				interrupts =
 				<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
 				<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
@@ -147,7 +157,7 @@
 			uart1: serial@12200 {
 				compatible = "marvell,armada-3700-uart-ext";
 				reg = <0x12200 0x30>;
-				clocks = <&xtalclk>;
+				clocks = <&uartclk 1>;
 				interrupts =
 				<GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
 				<GIC_SPI 31 IRQ_TYPE_EDGE_RISING>;
-- 
2.20.1


  parent reply	other threads:[~2021-09-29  8:23 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-29  8:20 [PATCH v6 0/6] serial: mvebu-uart: Support for higher baudrates Pali Rohár
2021-09-29  8:20 ` [PATCH v6 1/6] math64: New DIV_U64_ROUND_CLOSEST helper Pali Rohár
2021-09-29  8:20 ` [PATCH v6 2/6] serial: mvebu-uart: implement UART clock driver for configuring UART base clock Pali Rohár
2021-09-29  8:20 ` [PATCH v6 3/6] dt-bindings: mvebu-uart: document DT bindings for marvell,armada-3700-uart-clock Pali Rohár
2021-09-29 13:46   ` Rob Herring
2021-09-29 14:01     ` Pali Rohár
2021-09-29 21:30       ` Rob Herring
2021-09-29  8:20 ` [PATCH v6 4/6] dt-bindings: mvebu-uart: update information about UART clock Pali Rohár
2021-09-29  8:20 ` Pali Rohár [this message]
2021-09-29  8:20 ` [PATCH v6 6/6] serial: mvebu-uart: implement support for baudrates higher than 230400 Pali Rohár

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