Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Daniel Mack |
248 |
77.74% |
1 |
10.00% |
| Jason Liu |
47 |
14.73% |
1 |
10.00% |
| Dinh Nguyen |
12 |
3.76% |
1 |
10.00% |
| Uwe Kleine-König |
4 |
1.25% |
2 |
20.00% |
| Shawn Guo |
3 |
0.94% |
2 |
20.00% |
| Thomas Gleixner |
2 |
0.63% |
1 |
10.00% |
| Sascha Hauer |
2 |
0.63% |
1 |
10.00% |
| Johannes Berg |
1 |
0.31% |
1 |
10.00% |
| Total |
319 |
|
10 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* MX31 CPU type detection
*
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
*/
#include <linux/module.h>
#include <linux/io.h>
#include "common.h"
#include "hardware.h"
#include "iim.h"
static int mx31_cpu_rev = -1;
static struct {
u8 srev;
const char *name;
unsigned int rev;
} mx31_cpu_type[] = {
{ .srev = 0x00, .name = "i.MX31(L)", .rev = IMX_CHIP_REVISION_1_0 },
{ .srev = 0x10, .name = "i.MX31", .rev = IMX_CHIP_REVISION_1_1 },
{ .srev = 0x11, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_1_1 },
{ .srev = 0x12, .name = "i.MX31", .rev = IMX_CHIP_REVISION_1_1 },
{ .srev = 0x13, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_1_1 },
{ .srev = 0x14, .name = "i.MX31", .rev = IMX_CHIP_REVISION_1_2 },
{ .srev = 0x15, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_1_2 },
{ .srev = 0x28, .name = "i.MX31", .rev = IMX_CHIP_REVISION_2_0 },
{ .srev = 0x29, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_2_0 },
};
static int mx31_read_cpu_rev(void)
{
u32 i, srev;
/* read SREV register from IIM module */
srev = imx_readl(MX31_IO_ADDRESS(MX31_IIM_BASE_ADDR + MXC_IIMSREV));
srev &= 0xff;
for (i = 0; i < ARRAY_SIZE(mx31_cpu_type); i++)
if (srev == mx31_cpu_type[i].srev) {
imx_print_silicon_rev(mx31_cpu_type[i].name,
mx31_cpu_type[i].rev);
return mx31_cpu_type[i].rev;
}
imx_print_silicon_rev("i.MX31", IMX_CHIP_REVISION_UNKNOWN);
return IMX_CHIP_REVISION_UNKNOWN;
}
int mx31_revision(void)
{
if (mx31_cpu_rev == -1)
mx31_cpu_rev = mx31_read_cpu_rev();
return mx31_cpu_rev;
}
EXPORT_SYMBOL(mx31_revision);