From: Francis Fan <francis....@rock-chips.com>
Extend rockchip efuse driver with support for RK3288 non-secure efuse.
Signed-off-by: Francis Fan <francis....@rock-chips.com>
Signed-off-by: Cody Xie <cody....@rock-chips.com>
Signed-off-by: Jonas Karlman <jo...@kwiboo.se>
---
drivers/misc/rockchip-efuse.c | 91 +++++++++++++++++++++++++++++++++--
1 file changed, 87 insertions(+), 4 deletions(-)
diff --git a/drivers/misc/rockchip-efuse.c b/drivers/misc/rockchip-efuse.c
index 46ce6305fe..20423544d9 100644
--- a/drivers/misc/rockchip-efuse.c
+++ b/drivers/misc/rockchip-efuse.c
@@ -27,6 +27,17 @@
#define RK3399_STROBE BIT(1)
#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 {
u32 ctrl; /* 0x00 efuse control register */
u32 dout; /* 0x04 efuse data out register */
@@ -53,7 +64,7 @@ static int dump_efuses(struct cmd_tbl *cmdtp, int flag,
*/
struct udevice *dev;
- u8 fuses[128];
+ u8 fuses[128] = {0};
int ret;
/* retrieve the device */
@@ -77,7 +88,7 @@ static int dump_efuses(struct cmd_tbl *cmdtp, int flag,
}
U_BOOT_CMD(
- rk3399_dump_efuses, 1, 1, dump_efuses,
+ rockchip_dump_efuses, 1, 1, dump_efuses,
"Dump the content of the efuses",
""
);
@@ -127,10 +138,59 @@ static int rockchip_rk3399_efuse_read(struct udevice
*dev, int offset,
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,
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 = {
@@ -146,7 +206,30 @@ static int rockchip_efuse_ofdata_to_platdata(struct
udevice *dev)
}
static const struct udevice_id rockchip_efuse_ids[] = {
- { .compatible = "rockchip,rk3399-efuse" },
+ {
+ .compatible = "rockchip,rk3066a-efuse",
+ .data = (ulong)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3188-efuse",
+ .data = (ulong)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3228-efuse",
+ .data = (ulong)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3288-efuse",
+ .data = (ulong)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3368-efuse",
+ .data = (ulong)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3399-efuse",
+ .data = (ulong)&rockchip_rk3399_efuse_read,
+ },
{}
};
--
2.17.1
