qiurui
/
rv1126-uboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

rockchip: efuse: Support rk322x non-secure efuse. 

Change-Id: Ia25df975d21d7c97cf090f0d374074c2c5cd1a58
Signed-off-by: Francis Fan <francis.fan@rock-chips.com>
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>
This commit is contained in:
Francis Fan 2017-11-07 17:50:11 +08:00 committed by Kever Yang
parent cd99aa8213
commit b4fa32f0b6
1 changed files with 83 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

87
drivers/misc/rockchip-efuse.c
View File

@ -28,6 +28,17 @@
#define RK3399_STROBE BIT(1) #define RK3399_STROBE BIT(1)
#define RK3399_CSB BIT(0) #define RK3399_CSB BIT(0)
#define RK3288_A_SHIFT 6
#define RK3288_A_MASK 0x3ff
#define RK3288_NFUSES 32
#define RK3288_BYTES_PER_FUSE 1
#define RK3288_PGENB BIT(3)
#define RK3288_LOAD BIT(2)
#define RK3288_STROBE BIT(1)
#define RK3288_CSB BIT(0)
typedef int (*EFUSE_READ)(struct udevice *dev, int offset, void *buf, int size);
struct rockchip_efuse_regs { struct rockchip_efuse_regs {
u32 ctrl; /* 0x00 efuse control register */ u32 ctrl; /* 0x00 efuse control register */
u32 dout; /* 0x04 efuse data out register */ u32 dout; /* 0x04 efuse data out register */
@ -54,7 +65,7 @@ static int dump_efuses(cmd_tbl_t *cmdtp, int flag,
*/ */
struct udevice *dev; struct udevice *dev;
u8 fuses[128]; u8 fuses[128] = {0};
int ret; int ret;
/* retrieve the device */ /* retrieve the device */
@ -78,7 +89,7 @@ static int dump_efuses(cmd_tbl_t *cmdtp, int flag,
} }
U_BOOT_CMD( U_BOOT_CMD(
rk3399_dump_efuses, 1, 1, dump_efuses, rockchip_dump_efuses, 1, 1, dump_efuses,
"Dump the content of the efuses", "Dump the content of the efuses",
"" ""
); );
@ -128,10 +139,59 @@ static int rockchip_rk3399_efuse_read(struct udevice *dev, int offset,
return 0; return 0;
} }
static int rockchip_rk3288_efuse_read(struct udevice *dev, int offset,
void *buf, int size)
{
struct rockchip_efuse_platdata *plat = dev_get_platdata(dev);
struct rockchip_efuse_regs *efuse =
(struct rockchip_efuse_regs *)plat->base;
u8 *buffer = buf;
int max_size = RK3288_NFUSES * RK3288_BYTES_PER_FUSE;
if (size > (max_size - offset))
size = max_size - offset;
/* Switch to read mode */
writel(RK3288_LOAD | RK3288_PGENB, &efuse->ctrl);
udelay(1);
while (size--) {
writel(readl(&efuse->ctrl) &
(~(RK3288_A_MASK << RK3288_A_SHIFT)),
&efuse->ctrl);
/* set addr */
writel(readl(&efuse->ctrl) |
((offset++ & RK3288_A_MASK) << RK3288_A_SHIFT),
&efuse->ctrl);
udelay(1);
/* strobe low to high */
writel(readl(&efuse->ctrl) |
RK3288_STROBE, &efuse->ctrl);
ndelay(60);
/* read data */
*buffer++ = readl(&efuse->dout);
/* reset strobe to low */
writel(readl(&efuse->ctrl) &
(~RK3288_STROBE), &efuse->ctrl);
udelay(1);
}
/* Switch to standby mode */
writel(RK3288_PGENB | RK3288_CSB, &efuse->ctrl);
return 0;
}
static int rockchip_efuse_read(struct udevice *dev, int offset, static int rockchip_efuse_read(struct udevice *dev, int offset,
void *buf, int size) void *buf, int size)
{ {
return rockchip_rk3399_efuse_read(dev, offset, buf, size); EFUSE_READ efuse_read = NULL;
efuse_read = (EFUSE_READ)dev_get_driver_data(dev);
if (!efuse_read)
return -ENOSYS;
return (*efuse_read)(dev, offset, buf, size);
} }
static const struct misc_ops rockchip_efuse_ops = { static const struct misc_ops rockchip_efuse_ops = {
@ -147,7 +207,26 @@ static int rockchip_efuse_ofdata_to_platdata(struct udevice *dev)
} }
static const struct udevice_id rockchip_efuse_ids[] = { static const struct udevice_id rockchip_efuse_ids[] = {
{ .compatible = "rockchip,rk3399-efuse" }, {
.compatible = "rockchip,rockchip-efuse",
.data = (void *)&rockchip_rk3288_efuse_read,
},
{
.compatible = "rockchip,rk3066a-efuse",
.data = (void *)&rockchip_rk3288_efuse_read,
},
{
.compatible = "rockchip,rk3188-efuse",
.data = (void *)&rockchip_rk3288_efuse_read,
},
{
.compatible = "rockchip,rk322x-efuse",
.data = (void *)&rockchip_rk3288_efuse_read,
},
{
.compatible = "rockchip,rk3399-efuse",
.data = (ulong)&rockchip_rk3399_efuse_read,
},
{} {}
}; };