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nvmem: imx-ocotp-ele: support i.MX95

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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@nxp.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240902142952.71639-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peng Fan 2024-09-02 15:29:45 +01:00 committed by Greg Kroah-Hartman
parent 8ca1cfd686
commit c3f9b7b4e5
1 changed files with 29 additions and 3 deletions
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32
drivers/nvmem/imx-ocotp-ele.c
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@ -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);