ARM: dts: am437x: cm-t43: add basic support for sbc-t43

Add basic support for SBC-T43: a CM-T43 based single board computer.
CM-T43 is an AM437x based System-on-Module designed to serve as a building
block in embedded applications. SBC-T43 is composed of CM-T43 module on
top of the SB-SOM-T43 baseboard.
Basic support includes UART, GPIO, and I2C.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <bcousson@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
index 2154f9797714a352f8a8a9e93dfd0b466afd465c..f003741320af9417cd03f21176ca546fbdb86070 100644 (file)
--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
+++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
@@ -144,6 +144,12 @@ Boards:
 - OMAP5 EVM : Evaluation Module
   compatible = "ti,omap5-evm", "ti,omap5"
 
+- AM437x CM-T43
+  compatible = "compulab,am437x-cm-t43", "ti,am4372", "ti,am43"
+
+- AM437x SBC-T43
+  compatible = "compulab,am437x-sbc-t43", "compulab,am437x-cm-t43", "ti,am4372", "ti,am43"
+
 - AM43x EPOS EVM
   compatible = "ti,am43x-epos-evm", "ti,am4372", "ti,am43"
 

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 518db314b03985c94fd4093813e0306dfd7487a1..79bd9764d9b6eaf4ee2cee91ba4052dcc7a9a4de 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -480,9 +480,11 @@ dtb-$(CONFIG_ARCH_OMAP4) += \
        omap4-var-stk-om44.dtb
 dtb-$(CONFIG_SOC_AM43XX) += \
        am43x-epos-evm.dtb \
-       am437x-sk-evm.dtb \
+       am437x-cm-t43.dtb \
+       am437x-gp-evm.dtb \
        am437x-idk-evm.dtb \
-       am437x-gp-evm.dtb
+       am437x-sbc-t43.dtb \
+       am437x-sk-evm.dtb
 dtb-$(CONFIG_SOC_OMAP5) += \
        omap5-cm-t54.dtb \
        omap5-igep0050.dtb \

diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts
new file mode 100644 (file)
index 0000000..a131b97
--- /dev/null
+++ b/arch/arm/boot/dts/am437x-cm-t43.dts
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2015 CompuLab, Ltd. - http://www.compulab.co.il/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/pinctrl/am43xx.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include "am4372.dtsi"
+
+/ {
+       model = "CompuLab CM-T43";
+       compatible = "compulab,am437x-cm-t43", "ti,am4372", "ti,am43";
+
+       leds {
+               compatible = "gpio-leds";
+
+               ledb {
+                       label = "cm-t43:green";
+                       gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+               };
+       };
+};
+
+&am43xx_pinmux {
+       pinctrl-names = "default";
+       pinctrl-0 = <&cm_t43_led_pins>;
+
+       cm_t43_led_pins: cm_t43_led_pins {
+               pinctrl-single,pins = <
+                       AM4372_IOPAD(0xa78, MUX_MODE7)
+               >;
+       };
+
+       i2c0_pins: i2c0_pins {
+               pinctrl-single,pins = <
+                       AM4372_IOPAD(0x988, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE0)  /* i2c0_sda.i2c0_sda */
+                       AM4372_IOPAD(0x98c, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE0)  /* i2c0_scl.i2c0_scl */
+               >;
+       };
+};
+
+&i2c0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&gpio0 {
+       status = "okay";
+};
+
+&gpio1 {
+       status = "okay";
+};
+
+&gpio2 {
+       status = "okay";
+};
+
+&gpio3 {
+       status = "okay";
+};
+
+&gpio4 {
+       status = "okay";
+};
+
+&gpio5 {
+       status = "okay";
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&cpu {
+       operating-points = <1000000 1330000>,
+                          <800000 1260000>,
+                          <720000 1200000>,
+                          <600000 1100000>,
+                          <300000 950000>;
+};

diff --git a/arch/arm/boot/dts/am437x-sbc-t43.dts b/arch/arm/boot/dts/am437x-sbc-t43.dts
new file mode 100644 (file)
index 0000000..6ca22b7
--- /dev/null
+++ b/arch/arm/boot/dts/am437x-sbc-t43.dts
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2015 CompuLab, Ltd. - http://www.compulab.co.il/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "am437x-cm-t43.dts"
+
+/ {
+       model = "CompuLab CM-T43 on SB-SOM-T43";
+       compatible = "compulab,am437x-sbc-t43", "compulab,am437x-cm-t43", "ti,am4372", "ti,am43";
+};
+
+&am43xx_pinmux {
+       uart0_pins_default: uart0_pins_default {
+               pinctrl-single,pins = <
+                       AM4372_IOPAD(0x968, DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE0)
+                       AM4372_IOPAD(0x96C, DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE0)
+                       AM4372_IOPAD(0x970, PIN_INPUT_PULLUP | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_rxd.uart0_rxd */
+                       AM4372_IOPAD(0x974, PIN_INPUT | PULL_DISABLE | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_txd.uart0_txd */
+               >;
+       };
+
+       i2c1_pins: i2c1_pins {
+               pinctrl-single,pins = <
+                       AM4372_IOPAD(0xa6c, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE1)  /* spi2_cs0.i2c1_sda  */
+                       AM4372_IOPAD(0xa60, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE1)  /* spi2_sclk.i2c1_scl */
+               >;
+       };
+
+       i2c2_pins: i2c2_pins {
+               pinctrl-single,pins = <
+                       AM4372_IOPAD(0x978, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE3)  /* uart1_ctsn.i2c2_sda  */
+                       AM4372_IOPAD(0x97c, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE3)  /* uart1_rtsn.i2c2_scl */
+               >;
+       };
+};
+
+&i2c1 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+};
+
+&i2c2 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c2_pins>;
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pins_default>;
+};