upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/arch/arm/cpu/arm926ejs/davinci/dm355.c

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/*
* SoC-specific code for tms320dm355 and similar chips
*
* Copyright (C) 2009 David Brownell
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/hardware.h>
void davinci_enable_uart0(void)
{
lpsc_on(DAVINCI_LPSC_UART0);
/* Bringup UART0 out of reset */
REG(UART0_PWREMU_MGMT) = 0x00006001;
}
#ifdef CONFIG_DRIVER_DAVINCI_I2C
void davinci_enable_i2c(void)
{
lpsc_on(DAVINCI_LPSC_I2C);
/* Enable I2C pin Mux */
REG(PINMUX3) |= (1 << 20) | (1 << 19);
}
#endif