Skip to contentSkip to conversation

ARM: dts: Add am335x-bonegreen

PATCH New Robert Nelson 3 participants 5 messages Sep 25, 2015 – Oct 12, 2015

Subsystems (2)
Device tree bindings Arm and arm64 SoC sub-architectures (common parts)
lore
Share & tools
lore

Robert Nelson

author
#0 lore raw

PATCH 1/1 ARM: dts: Add am335x-bonegreen

SeeedStudio BeagleBone Green (BBG) is clone of the BeagleBone Black (BBB) minus the HDMI port and addition of two Grove connectors (i2c2 and usart2).

This board can be identified by the 1A value after A335BNLT (BBB) in the at24 eeprom:
1A: [aa 55 33 ee 41 33 33 35 42 4e 4c 54 1a 00 00 00 |.U3.A335BNLT....|]

http://beagleboard.org/green
http://www.seeedstudio.com/wiki/Beaglebone_green

Signed-off-by Robert Nelson <[email protected]>
CC Tony Lindgren <[email protected]>
CC Jason Kridner <[email protected]>
---
 arch/arm/boot/dts/Makefile             |  1 +
 arch/arm/boot/dts/am335x-bonegreen.dts | 53 ++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 arch/arm/boot/dts/am335x-bonegreen.dts
arch/arm/boot/dts/Makefile +1 -0
index 233159d..e45d771 100644
@@ -446,6 +446,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \
 	am335x-base0033.dtb \
 	am335x-bone.dtb \
 	am335x-boneblack.dtb \
+	am335x-bonegreen.dtb \
 	am335x-sl50.dtb \
 	am335x-evm.dtb \
 	am335x-evmsk.dtb \
arch/arm/boot/dts/am335x-bonegreen.dts new file +53 -0

53 lines not on this page · raw message

Signature · 1 line
2.5.3
#1 lore raw

PATCH 1/1 ARM: dts: Add am335x-bonegreen

Quoted 80 lines · Robert Nelson

SeeedStudio BeagleBone Green (BBG) is clone of the BeagleBone Black (BBB) minus the HDMI port and addition of two Grove connectors (i2c2 and usart2).

This board can be identified by the 1A value after A335BNLT (BBB) in the at24 eeprom:
1A: [aa 55 33 ee 41 33 33 35 42 4e 4c 54 1a 00 00 00 |.U3.A335BNLT....|]

http://beagleboard.org/green
http://www.seeedstudio.com/wiki/Beaglebone_green

Signed-off-by Robert Nelson <[email protected]>
CC Tony Lindgren <[email protected]>
CC Jason Kridner <[email protected]>
---
 arch/arm/boot/dts/Makefile             |  1 +
 arch/arm/boot/dts/am335x-bonegreen.dts | 53 ++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 arch/arm/boot/dts/am335x-bonegreen.dts
arch/arm/boot/dts/Makefile +1 -0
index 233159d..e45d771 100644
@@ -446,6 +446,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \
 	am335x-base0033.dtb \
 	am335x-bone.dtb \
 	am335x-boneblack.dtb \
+	am335x-bonegreen.dtb \
 	am335x-sl50.dtb \
 	am335x-evm.dtb \
 	am335x-evmsk.dtb \
arch/arm/boot/dts/am335x-bonegreen.dts new file +43 -0
new file mode 100644
index 0000000..0f65bda
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * 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 "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+
+/ {
+	model = "TI AM335x BeagleBone Green";
+	compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+};
+
+&ldo3_reg {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <1800000>;
+	regulator-always-on;
+};
+
+&mmc1 {
+	vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&mmc2 {
+	vmmc-supply = <&vmmcsd_fixed>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_pins>;
+	bus-width = <8>;
+	status = "okay";
+};
+
+&am33xx_pinmux {
+	uart2_pins: uart2_pins {
+		pinctrl-single,pins = <
+			0x150 (PIN_INPUT | MUX_MODE1)	/* spi0_sclk.uart2_rxd */
+			0x154 (PIN_OUTPUT | MUX_MODE1)	/* spi0_d0.uart2_txd */
+		>;
+	};
+};

arch/arm/boot/dts/am335x-bonegreen.dts line 53

Quoted 10 lines
arch/arm/boot/dts/am335x-bonegreen.dts new file +10 -0
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_pins>;
+	status = "okay";
+};
+
+&rtc {
+	system-power-controller;
+};

Would still work when https://patchwork.kernel.org/patch/6394821/ gets in?

Signature · 2 lines
Regards,
Nishanth Menon
author
#2 lore raw

PATCH 1/1 ARM: dts: Add am335x-bonegreen

Quoted 86 lines · Nishanth Menon
Quoted 85 lines · Robert Nelson

SeeedStudio BeagleBone Green (BBG) is clone of the BeagleBone Black (BBB) minus the HDMI port and addition of two Grove connectors (i2c2 and usart2).

This board can be identified by the 1A value after A335BNLT (BBB) in the at24 eeprom:
1A: [aa 55 33 ee 41 33 33 35 42 4e 4c 54 1a 00 00 00 |.U3.A335BNLT....|]

http://beagleboard.org/green
http://www.seeedstudio.com/wiki/Beaglebone_green

Signed-off-by Robert Nelson <[email protected]>
CC Tony Lindgren <[email protected]>
CC Jason Kridner <[email protected]>
---
 arch/arm/boot/dts/Makefile             |  1 +
 arch/arm/boot/dts/am335x-bonegreen.dts | 53 ++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 arch/arm/boot/dts/am335x-bonegreen.dts
arch/arm/boot/dts/Makefile +1 -0
index 233159d..e45d771 100644
@@ -446,6 +446,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \
      am335x-base0033.dtb \
      am335x-bone.dtb \
      am335x-boneblack.dtb \
+     am335x-bonegreen.dtb \
      am335x-sl50.dtb \
      am335x-evm.dtb \
      am335x-evmsk.dtb \
arch/arm/boot/dts/am335x-bonegreen.dts new file +49 -0
new file mode 100644
index 0000000..0f65bda
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * 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 "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+
+/ {
+     model = "TI AM335x BeagleBone Green";
+     compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+};
+
+&ldo3_reg {
+     regulator-min-microvolt = <1800000>;
+     regulator-max-microvolt = <1800000>;
+     regulator-always-on;
+};
+
+&mmc1 {
+     vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&mmc2 {
+     vmmc-supply = <&vmmcsd_fixed>;
+     pinctrl-names = "default";
+     pinctrl-0 = <&emmc_pins>;
+     bus-width = <8>;
+     status = "okay";
+};
+
+&am33xx_pinmux {
+     uart2_pins: uart2_pins {
+             pinctrl-single,pins = <
+                     0x150 (PIN_INPUT | MUX_MODE1)   /* spi0_sclk.uart2_rxd */
+                     0x154 (PIN_OUTPUT | MUX_MODE1)  /* spi0_d0.uart2_txd */
+             >;
+     };
+};
+
+&uart2 {
+     pinctrl-names = "default";
+     pinctrl-0 = <&uart2_pins>;
+     status = "okay";
+};
Quoted 8 lines

arch/arm/boot/dts/am335x-bonegreen.dts line 53

Quoted 5 lines
arch/arm/boot/dts/am335x-bonegreen.dts new file +4 -0
+
+&rtc {
+     system-power-controller;
+};

Would still work when https://patchwork.kernel.org/patch/6394821/ gets in?

That will still work, but we need to extend the board identification to "board-name" + "board-revision", as the Green choose the "A335BNLT" board name in the eeprom to remain compatible with older 3.8.x images from last year.. (most of the clones i've talked too want to support the old image too)...

So with the 1st byte of the board-revision:
All BeagleBone Black's have: 0x30
Seeed's using 0x1A (with the potential to increment the A)

Regards,

Signature · 2 lines
Robert Nelson
https://rcn-ee.com/
author
#3 lore raw

PATCH 1/1 ARM: dts: Add am335x-bonegreen

Quoted 9 lines
Quoted 2 lines

Would still work when https://patchwork.kernel.org/patch/6394821/ gets in?

That will still work, but we need to extend the board identification to "board-name" + "board-revision", as the Green choose the "A335BNLT" board name in the eeprom to remain compatible with older 3.8.x images from last year.. (most of the clones i've talked too want to support the old image too)...

Quoted 3 lines

So with the 1st byte of the board-revision:
All BeagleBone Black's have: 0x30
Seeed's using 0x1A (with the potential to increment the A)

I should add, we have an official-ish list at the top of (1), to help keep track of this...

1: https://github.com/beagleboard/image-builder/blob/master/readme.md

Regards,

Signature · 2 lines
Robert Nelson
https://rcn-ee.com/
#4 lore raw

PATCH 1/1 ARM: dts: Add am335x-bonegreen

In reply to Robert Nelson
Quoted 8 lines · Robert Nelson

SeeedStudio BeagleBone Green (BBG) is clone of the BeagleBone Black (BBB) minus the HDMI port and addition of two Grove connectors (i2c2 and usart2).

This board can be identified by the 1A value after A335BNLT (BBB) in the at24 eeprom:
1A: [aa 55 33 ee 41 33 33 35 42 4e 4c 54 1a 00 00 00 |.U3.A335BNLT....|]

http://beagleboard.org/green
http://www.seeedstudio.com/wiki/Beaglebone_green

Thanks applying into omap-for-v4.4/dt.

Tony