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74 lines
2.1 KiB
Diff
74 lines
2.1 KiB
Diff
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From c3f9b7b4e5f9de319d00784577cda42036ff243a Mon Sep 17 00:00:00 2001
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From: Peng Fan <peng.fan@nxp.com>
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Date: Mon, 2 Sep 2024 15:29:45 +0100
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Subject: [PATCH] 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
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some fuse has ECC feature, so only read out the lower 16bits for ECC fuses.
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Signed-off-by: Peng Fan <peng.fan@nxp.com>
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Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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Link: https://lore.kernel.org/r/20240902142952.71639-3-srinivas.kandagatla@linaro.org
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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drivers/nvmem/imx-ocotp-ele.c | 32 +++++++++++++++++++++++++++++---
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1 file changed, 29 insertions(+), 3 deletions(-)
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--- a/drivers/nvmem/imx-ocotp-ele.c
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+++ b/drivers/nvmem/imx-ocotp-ele.c
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@@ -14,8 +14,9 @@
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#include <linux/slab.h>
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enum fuse_type {
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- FUSE_FSB = 1,
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- FUSE_ELE = 2,
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+ FUSE_FSB = BIT(0),
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+ FUSE_ELE = BIT(1),
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+ FUSE_ECC = BIT(2),
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FUSE_INVALID = -1
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};
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@@ -93,7 +94,10 @@ static int imx_ocotp_reg_read(void *cont
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continue;
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}
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- *buf++ = readl_relaxed(reg + (i << 2));
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+ if (type & FUSE_ECC)
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+ *buf++ = readl_relaxed(reg + (i << 2)) & GENMASK(15, 0);
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+ else
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+ *buf++ = readl_relaxed(reg + (i << 2));
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}
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memcpy(val, (u8 *)p, bytes);
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@@ -155,8 +159,30 @@ static const struct ocotp_devtype_data i
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},
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};
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+static const struct ocotp_devtype_data imx95_ocotp_data = {
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+ .reg_off = 0x8000,
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+ .reg_read = imx_ocotp_reg_read,
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+ .size = 2048,
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+ .num_entry = 12,
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+ .entry = {
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+ { 0, 1, FUSE_FSB | FUSE_ECC },
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+ { 7, 1, FUSE_FSB | FUSE_ECC },
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+ { 9, 3, FUSE_FSB | FUSE_ECC },
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+ { 12, 24, FUSE_FSB },
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+ { 36, 2, FUSE_FSB | FUSE_ECC },
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+ { 38, 14, FUSE_FSB },
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+ { 63, 1, FUSE_ELE },
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+ { 128, 16, FUSE_ELE },
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+ { 188, 1, FUSE_ELE },
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+ { 317, 2, FUSE_FSB | FUSE_ECC },
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+ { 320, 7, FUSE_FSB },
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+ { 328, 184, FUSE_FSB }
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+ },
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+};
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+
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static const struct of_device_id imx_ele_ocotp_dt_ids[] = {
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{ .compatible = "fsl,imx93-ocotp", .data = &imx93_ocotp_data, },
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+ { .compatible = "fsl,imx95-ocotp", .data = &imx95_ocotp_data, },
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{},
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};
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MODULE_DEVICE_TABLE(of, imx_ele_ocotp_dt_ids);
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