mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
109 lines
2 KiB
C
109 lines
2 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* Copyright (C) Guangzhou FriendlyARM Computer Tech. Co., Ltd.
|
||
|
|
* (http://www.friendlyarm.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <config.h>
|
||
|
|
#include <common.h>
|
||
|
|
#include <i2c.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
|
||
|
|
#include <asm/arch/nexell.h>
|
||
|
|
#include <asm/arch/nx_gpio.h>
|
||
|
|
|
||
|
|
/* Board revision list: <PCB3 | PCB2 | PCB1>
|
||
|
|
* 0b000 - NanoPi 2
|
||
|
|
* 0b001 - NanoPC-T2
|
||
|
|
* 0b010 - NanoPi S2
|
||
|
|
* 0b011 - Smart4418
|
||
|
|
* 0b100 - NanoPi Fire 2A
|
||
|
|
* 0b111 - NanoPi M2A
|
||
|
|
*
|
||
|
|
* Extented revision:
|
||
|
|
* 0b001 - Smart4418-SDK
|
||
|
|
*/
|
||
|
|
#define __IO_GRP 2 /* GPIO_C */
|
||
|
|
#define __IO_PCB1 26
|
||
|
|
#define __IO_PCB2 27
|
||
|
|
#define __IO_PCB3 25
|
||
|
|
|
||
|
|
static int pcb_rev = -1;
|
||
|
|
static int base_rev;
|
||
|
|
|
||
|
|
static void bd_hwrev_config_gpio(void)
|
||
|
|
{
|
||
|
|
int gpios[3][2] = {
|
||
|
|
{ __IO_PCB1, 1 },
|
||
|
|
{ __IO_PCB2, 1 },
|
||
|
|
{ __IO_PCB3, 1 },
|
||
|
|
};
|
||
|
|
int i;
|
||
|
|
|
||
|
|
/* gpio input mode, pull-down */
|
||
|
|
for (i = 0; i < 3; i++) {
|
||
|
|
nx_gpio_set_pad_function(__IO_GRP, gpios[i][0], gpios[i][1]);
|
||
|
|
nx_gpio_set_output_enable(__IO_GRP, gpios[i][0], 0);
|
||
|
|
nx_gpio_set_pull_mode(__IO_GRP, gpios[i][0], 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void bd_hwrev_init(void)
|
||
|
|
{
|
||
|
|
if (pcb_rev >= 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
bd_hwrev_config_gpio();
|
||
|
|
|
||
|
|
pcb_rev = nx_gpio_get_input_value(__IO_GRP, __IO_PCB1);
|
||
|
|
pcb_rev |= nx_gpio_get_input_value(__IO_GRP, __IO_PCB2) << 1;
|
||
|
|
pcb_rev |= nx_gpio_get_input_value(__IO_GRP, __IO_PCB3) << 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get extended revision for SmartXX18 */
|
||
|
|
void bd_base_rev_init(void)
|
||
|
|
{
|
||
|
|
struct udevice *dev;
|
||
|
|
u8 val = 0;
|
||
|
|
|
||
|
|
if (pcb_rev != 0x3)
|
||
|
|
return;
|
||
|
|
|
||
|
|
#define PCA9536_I2C_BUS 2
|
||
|
|
#define PCA9636_I2C_ADDR 0x41
|
||
|
|
if (i2c_get_chip_for_busnum
|
||
|
|
(PCA9536_I2C_BUS, PCA9636_I2C_ADDR, 1, &dev))
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (!dm_i2c_read(dev, 0, &val, 1))
|
||
|
|
base_rev = (val & 0xf);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* To override __weak symbols */
|
||
|
|
u32 get_board_rev(void)
|
||
|
|
{
|
||
|
|
return (base_rev << 8) | pcb_rev;
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *get_board_name(void)
|
||
|
|
{
|
||
|
|
bd_hwrev_init();
|
||
|
|
|
||
|
|
switch (pcb_rev) {
|
||
|
|
case 0:
|
||
|
|
return "NanoPi 2";
|
||
|
|
case 1:
|
||
|
|
return "NanoPC-T2";
|
||
|
|
case 2:
|
||
|
|
return "NanoPi S2";
|
||
|
|
case 3:
|
||
|
|
return "Smart4418";
|
||
|
|
case 4:
|
||
|
|
return "NanoPi Fire 2A";
|
||
|
|
case 7:
|
||
|
|
return "NanoPi M2A";
|
||
|
|
default:
|
||
|
|
return "s5p4418-X";
|
||
|
|
}
|
||
|
|
}
|