u-boot/board/elgin/elgin_rv1108/elgin_rv1108.c
Otavio Salvador e11ef3d26e ARM: rockchip: Add rv1108-elgin-r1 board support
Add the initial support for Elgin R1 board, which is based on the
RV1108 SoC and has the following features currently supported in
U-Boot:

- UART
- eMMC
- USB

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-12-16 01:30:11 +01:00

74 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C)Copyright 2016 Rockchip Electronics Co., Ltd
* Authors: Andy Yan <andy.yan@rock-chips.com>
*/
#include <common.h>
#include <asm/io.h>
#include <fdtdec.h>
#include <asm/arch/grf_rv1108.h>
#include <asm/arch/hardware.h>
#include <asm/gpio.h>
DECLARE_GLOBAL_DATA_PTR;
int mach_cpu_init(void)
{
int node;
struct rv1108_grf *grf;
enum {
GPIO3C3_SHIFT = 6,
GPIO3C3_MASK = 3 << GPIO3C3_SHIFT,
GPIO3C2_SHIFT = 4,
GPIO3C2_MASK = 3 << GPIO3C2_SHIFT,
GPIO2D2_SHIFT = 4,
GPIO2D2_MASK = 3 << GPIO2D2_SHIFT,
GPIO2D2_GPIO = 0,
GPIO2D2_UART2_SOUT_M0,
GPIO2D1_SHIFT = 2,
GPIO2D1_MASK = 3 << GPIO2D1_SHIFT,
GPIO2D1_GPIO = 0,
GPIO2D1_UART2_SIN_M0,
};
node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "rockchip,rv1108-grf");
grf = (struct rv1108_grf *)fdtdec_get_addr(gd->fdt_blob, node, "reg");
/* Elgin board use UART2 m0 for debug*/
rk_clrsetreg(&grf->gpio2d_iomux,
GPIO2D2_MASK | GPIO2D1_MASK,
GPIO2D2_UART2_SOUT_M0 << GPIO2D2_SHIFT |
GPIO2D1_UART2_SIN_M0 << GPIO2D1_SHIFT);
rk_clrreg(&grf->gpio3c_iomux, GPIO3C3_MASK | GPIO3C2_MASK);
return 0;
}
#define MODEM_ENABLE_GPIO 111
int board_init(void)
{
gpio_request(MODEM_ENABLE_GPIO, "modem_enable");
gpio_direction_output(MODEM_ENABLE_GPIO, 0);
return 0;
}
int dram_init(void)
{
gd->ram_size = 0x8000000;
return 0;
}
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = 0x60000000;
gd->bd->bi_dram[0].size = 0x8000000;
return 0;
}