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Date: Tue, 30 Jun 2015 14:27:30 +0200
From: Paul Osmialowski <pawelo@...g.net.pl>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Jiri Slaby <jslaby@...e.cz>, Kumar Gala <galak@...eaurora.org>,
Linus Walleij <linus.walleij@...aro.org>,
Mark Rutland <mark.rutland@....com>,
Michael Turquette <mturquette@...libre.com>,
Pawel Moll <pawel.moll@....com>,
Rob Herring <robh+dt@...nel.org>,
Russell King <linux@....linux.org.uk>,
Stephen Boyd <sboyd@...eaurora.org>,
Vinod Koul <vinod.koul@...el.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
dmaengine@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Nicolas Pitre <nicolas.pitre@...aro.org>,
Paul Bolle <pebolle@...cali.nl>,
Thomas Gleixner <tglx@...utronix.de>,
Uwe Kleine-Koenig <u.kleine-koenig@...gutronix.de>,
Paul Osmialowski <pawelo@...g.net.pl>,
Anson Huang <b20788@...escale.com>,
Frank Li <Frank.Li@...escale.com>,
Jingchang Lu <jingchang.lu@...escale.com>,
Rob Herring <r.herring@...escale.com>,
Yuri Tikhonov <yur@...raft.com>,
Sergei Poselenov <sposelenov@...raft.com>,
Alexander Potashev <aspotashev@...raft.com>
Subject: [PATCH v2 9/9] arm: twr-k70f120m: use Freescale lpuart driver with Kinetis SoC
Note that enabling tx DMA resulted in messy output, so I didn't configure
it in the .dts file - however nothing in the code prevents one from doing
so. Also note that original reference UART driver from Emcraft did not
implement tx DMA at all.
Signed-off-by: Paul Osmialowski <pawelo@...g.net.pl>
---
arch/arm/boot/dts/kinetis-twr-k70f120m.dts | 23 +++++++++
arch/arm/boot/dts/kinetis.dtsi | 78 ++++++++++++++++++++++++++++++
2 files changed, 101 insertions(+)
diff --git a/arch/arm/boot/dts/kinetis-twr-k70f120m.dts b/arch/arm/boot/dts/kinetis-twr-k70f120m.dts
index a6efc29..5d8470a 100644
--- a/arch/arm/boot/dts/kinetis-twr-k70f120m.dts
+++ b/arch/arm/boot/dts/kinetis-twr-k70f120m.dts
@@ -10,11 +10,34 @@
model = "Freescale TWR-K70F120M Development Kit";
compatible = "fsl,kinetis-twr-k70f120m";
+ chosen {
+ bootargs = "console=ttyLP2,115200";
+ };
+
memory {
reg = <0x8000000 0x8000000>;
};
};
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2_pins>;
+ status = "ok";
+};
+
+&portE {
+ status = "ok";
+
+ uart2 {
+ uart2_pins: pinmux_uart2_pins {
+ fsl,pins = <
+ 16 0x300 /* E.16 = UART2_TX */
+ 17 0x300 /* E.17 = UART2_RX */
+ >;
+ };
+ };
+};
+
&pit0 {
status = "ok";
};
diff --git a/arch/arm/boot/dts/kinetis.dtsi b/arch/arm/boot/dts/kinetis.dtsi
index c2861f5..fedafe3 100644
--- a/arch/arm/boot/dts/kinetis.dtsi
+++ b/arch/arm/boot/dts/kinetis.dtsi
@@ -16,9 +16,87 @@
pmx3 = &portD;
pmx4 = &portE;
pmx5 = &portF;
+ serial0 = &uart0;
+ serial1 = &uart1;
+ serial2 = &uart2;
+ serial3 = &uart3;
+ serial4 = &uart4;
+ serial5 = &uart5;
};
soc {
+ uart0: serial@...6a000 {
+ compatible = "fsl,kinetis-lpuart";
+ reg = <0x4006a000 0x1000>;
+ interrupts = <45>, <46>;
+ interrupt-names = "uart-stat", "uart-err";
+ clocks = <&mcg_cclk_gate 3 10>;
+ clock-names = "ipg";
+ dmas = <&edma 0 2>;
+ dma-names = "rx";
+ status = "disabled";
+ };
+
+ uart1: serial@...6b000 {
+ compatible = "fsl,kinetis-lpuart";
+ reg = <0x4006b000 0x1000>;
+ interrupts = <47>, <48>;
+ interrupt-names = "uart-stat", "uart-err";
+ clocks = <&mcg_cclk_gate 3 11>;
+ clock-names = "ipg";
+ dmas = <&edma 0 4>;
+ dma-names = "rx";
+ status = "disabled";
+ };
+
+ uart2: serial@...6c000 {
+ compatible = "fsl,kinetis-lpuart";
+ reg = <0x4006c000 0x1000>;
+ interrupts = <49>, <50>;
+ interrupt-names = "uart-stat", "uart-err";
+ clocks = <&mcg_pclk_gate 3 12>;
+ clock-names = "ipg";
+ dmas = <&edma 0 6>;
+ dma-names = "rx";
+ status = "disabled";
+ };
+
+ uart3: serial@...6d000 {
+ compatible = "fsl,kinetis-lpuart";
+ reg = <0x4006d000 0x1000>;
+ interrupts = <51>, <52>;
+ interrupt-names = "uart-stat", "uart-err";
+ clocks = <&mcg_pclk_gate 3 13>;
+ clock-names = "ipg";
+ dmas = <&edma 0 8>;
+ dma-names = "rx";
+ status = "disabled";
+ };
+
+ uart4: serial@...ea000 {
+ compatible = "fsl,kinetis-lpuart";
+ reg = <0x400ea000 0x1000>;
+ interrupts = <53>, <54>;
+ interrupt-names = "uart-stat", "uart-err";
+ clocks = <&mcg_pclk_gate 0 10>;
+ clock-names = "ipg";
+ dmas = <&edma 0 10>;
+ dma-names = "rx";
+ status = "disabled";
+ };
+
+ uart5: serial@...eb000 {
+ compatible = "fsl,kinetis-lpuart";
+ reg = <0x400eb000 0x1000>;
+ interrupts = <55>, <56>;
+ interrupt-names = "uart-stat", "uart-err";
+ clocks = <&mcg_pclk_gate 0 11>;
+ clock-names = "ipg";
+ dmas = <&edma 0 12>;
+ dma-names = "rx";
+ status = "disabled";
+ };
+
edma: dma-controller@...08000 {
compatible = "fsl,kinetis-edma";
reg = <0x40008000 0x2000>, /* DMAC */
--
2.3.6
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