diff options
Diffstat (limited to 'target/linux/generic/backport-6.6/823-v6.12-0001-nvmem-imx-ocotp-ele-support-i.MX95.patch')
| -rw-r--r-- | target/linux/generic/backport-6.6/823-v6.12-0001-nvmem-imx-ocotp-ele-support-i.MX95.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/target/linux/generic/backport-6.6/823-v6.12-0001-nvmem-imx-ocotp-ele-support-i.MX95.patch b/target/linux/generic/backport-6.6/823-v6.12-0001-nvmem-imx-ocotp-ele-support-i.MX95.patch new file mode 100644 index 0000000000..c19931b3fa --- /dev/null +++ b/target/linux/generic/backport-6.6/823-v6.12-0001-nvmem-imx-ocotp-ele-support-i.MX95.patch @@ -0,0 +1,73 @@ +From c3f9b7b4e5f9de319d00784577cda42036ff243a Mon Sep 17 00:00:00 2001 +From: Peng Fan <peng.fan@nxp.com> +Date: Mon, 2 Sep 2024 15:29:45 +0100 +Subject: [PATCH] nvmem: imx-ocotp-ele: support i.MX95 + +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> +--- + drivers/nvmem/imx-ocotp-ele.c | 32 +++++++++++++++++++++++++++++--- + 1 file changed, 29 insertions(+), 3 deletions(-) + +--- 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 *cont + 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 i + }, + }; + ++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); |