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This commit introduces new subtarget for Marvell EBU Armada Cortex A53
processor based devices.
The first device is Globalscale ESPRESSObin. Some hardware specs:
SoC: Marvell Armada 3700LP (88F3720) dual core ARM Cortex A53
processor up to 1.2GHz
RAM: 512MB, 1GB or 2GB DDR3
Storage: SATA interface
µSD card slot with footprint for an optional 4GB EMMC
4MB SPI NOR flash for bootloader
Ethernet: Topaz Networking Switch (88E6341) with 3x GbE ports
Connectors: USB 3.0
USB 2.0
µUSB port connected to PL2303SA (USB to serial bridge
controller) for UART access
Expansion: 2x 46-pin GPIO headers for accessories and shields with
I2C, GPIOs, PWM, UART, SPI, MMC, etc
MiniPCIe slot
Misc: Reset button, JTAG interface
Currently booting only from µSD card is supported.
The boards depending on date of dispatch can come with various U-Boot
versions. For the newest version 2017.03-armada-17.10 no manual
intervention should be needed to boot OpenWrt image. For the older ones
it's necessary to modify default U-Boot environment:
1. Interrupt boot process to run U-Boot command line,
2. Run following commands:
(for version 2017.03-armada-17.06 and 2017.03-armada-17.08)
setenv bootcmd "load mmc 0:1 0x4d00000 boot.scr; source 0x4d00000"
saveenv
(for version 2015.01-armada-17.02 and 2015.01-armada-17.04)
setenv bootargs "console=ttyMV0,115200 root=/dev/mmcblk0p2 rw rootwait"
setenv bootcmd "ext4load mmc 0:1 ${fdt_addr} armada-3720-espressobin.dtb; ext4load mmc 0:1 ${kernel_addr} Image; booti ${kernel_addr} - ${fdt_addr}"
saveenv
3. Poweroff, insert SD card with OpenWrt image, boot and enjoy.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
28 lines
992 B
Diff
28 lines
992 B
Diff
From 2ff0d0b5bb397c3dc5c9b97bd0f20948f0b77740 Mon Sep 17 00:00:00 2001
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From: Miquel Raynal <miquel.raynal@free-electrons.com>
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Date: Fri, 13 Oct 2017 11:01:57 +0200
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Subject: arm64: dts: marvell: armada-37xx: add UART clock
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Add the missing clock property to armada-3700 UART node.
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This clock will be used to derive the prescaler value to comply with
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the requested baudrate.
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Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
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Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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---
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arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 1 +
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1 file changed, 1 insertion(+)
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--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
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+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
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@@ -135,6 +135,7 @@
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uart0: serial@12000 {
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compatible = "marvell,armada-3700-uart";
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reg = <0x12000 0x200>;
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+ clocks = <&xtalclk>;
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interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
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status = "disabled";
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};
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