From: Peng Fan <peng.fan@xxxxxxx>
i.MX95 OCOTP has same accessing method, so add an entry for i.MX95, but
some fuse has ECC feature, so only read out the lower 16bits for ECC fuses.
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
drivers/nvmem/imx-ocotp-ele.c | 32 +++++++++++++++++++++++++++++---
1 file changed, 29 insertions(+), 3 deletions(-)
diff --git a/drivers/nvmem/imx-ocotp-ele.c b/drivers/nvmem/imx-ocotp-ele.c
index cf920542f939..4f22310920a2 100644
--- a/drivers/nvmem/imx-ocotp-ele.c
+++ b/drivers/nvmem/imx-ocotp-ele.c
@@ -14,8 +14,9 @@
#include <linux/slab.h>
enum fuse_type {
- FUSE_FSB = 1,
- FUSE_ELE = 2,
+ FUSE_FSB = BIT(0),
+ FUSE_ELE = BIT(1),
+ FUSE_ECC = BIT(2),
FUSE_INVALID = -1
};
@@ -93,7 +94,10 @@ static int imx_ocotp_reg_read(void *context, unsigned int offset, void *val, siz
continue;
}
- *buf++ = readl_relaxed(reg + (i << 2));
+ if (type | FUSE_ECC)
+ *buf++ = readl_relaxed(reg + (i << 2)) & GENMASK(15, 0);
+ else
+ *buf++ = readl_relaxed(reg + (i << 2));
}
memcpy(val, (u8 *)p, bytes);
@@ -155,8 +159,30 @@ static const struct ocotp_devtype_data imx93_ocotp_data = {
},
};
+static const struct ocotp_devtype_data imx95_ocotp_data = {
+ .reg_off = 0x8000,
+ .reg_read = imx_ocotp_reg_read,
+ .size = 2048,
+ .num_entry = 12,
+ .entry = {
+ { 0, 1, FUSE_FSB | FUSE_ECC },
+ { 7, 1, FUSE_FSB | FUSE_ECC },
+ { 9, 3, FUSE_FSB | FUSE_ECC },
+ { 12, 24, FUSE_FSB },
+ { 36, 2, FUSE_FSB | FUSE_ECC },
+ { 38, 14, FUSE_FSB },
+ { 63, 1, FUSE_ELE },
+ { 128, 16, FUSE_ELE },
+ { 188, 1, FUSE_ELE },
+ { 317, 2, FUSE_FSB | FUSE_ECC },
+ { 320, 7, FUSE_FSB },
+ { 328, 184, FUSE_FSB }
+ },
+};
+
static const struct of_device_id imx_ele_ocotp_dt_ids[] = {
{ .compatible = "fsl,imx93-ocotp", .data = &imx93_ocotp_data, },
+ { .compatible = "fsl,imx95-ocotp", .data = &imx95_ocotp_data, },
{},
};
MODULE_DEVICE_TABLE(of, imx_ele_ocotp_dt_ids);
--
2.37.1
