openwrt/target/linux/mvebu/patches-4.14/502-arm64-dts-marvell-armada-37xx-add-UART-clock.patch

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mvebu: new subtarget cortex A53 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>
2018-03-07 21:10:02 +00:00
From 2ff0d0b5bb397c3dc5c9b97bd0f20948f0b77740 Mon Sep 17 00:00:00 2001
From: Miquel Raynal <miquel.raynal@free-electrons.com>
Date: Fri, 13 Oct 2017 11:01:57 +0200
Subject: arm64: dts: marvell: armada-37xx: add UART clock
Add the missing clock property to armada-3700 UART node.
This clock will be used to derive the prescaler value to comply with
the requested baudrate.
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
---
arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -135,6 +135,7 @@
uart0: serial@12000 {
compatible = "marvell,armada-3700-uart";
reg = <0x12000 0x200>;
+ clocks = <&xtalclk>;
interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
status = "disabled";
};