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| author | Daniel Schultz <d.schultz@phytec.de> | 2017-01-04 16:18:10 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-04 18:22:47 +0100 |
| commit | 14ba972842f9e84e6d3264bc0302101b8a792288 (patch) | |
| tree | effe8a3d8f04572220b22c68524e42f62a2578c0 | |
| parent | 01d0d2c42a14cee8f619d3e9d571ce3469f5ef51 (diff) | |
| download | linux-stable-14ba972842f9e84e6d3264bc0302101b8a792288.tar.gz linux-stable-14ba972842f9e84e6d3264bc0302101b8a792288.tar.bz2 linux-stable-14ba972842f9e84e6d3264bc0302101b8a792288.zip | |
nvmem: imx-ocotp: Fix wrong register size
All i.MX6 SoCs have an OCOTP Controller with 4kbit fuses. The i.MX6SL is
an exception and has only 2kbit fuses.
In the TRM for the i.MX6DQ (IMX6QDRM - Rev 2, 06/2014) the fuses size is
described in chapter 46.1.1 with:
"32-bit word restricted program and read to 4Kbits of eFuse OTP(512x8)."
In the TRM for the i.MX6SL (IMX6SLRM - Rev 2, 06/2015) the fuses size is
described in chapter 34.1.1 with:
"32-bit word restricted program and read to 2 kbit of eFuse OTP(128x8)."
Since the Freescale Linux kernel OCOTP driver works with a fuses size of
2 kbit for the i.MX6SL, it looks like the TRM is wrong and the formula
to calculate the correct fuses size has to be 256x8.
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/nvmem/imx-ocotp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c index ac27b9bac3b9..8e7b120696fa 100644 --- a/drivers/nvmem/imx-ocotp.c +++ b/drivers/nvmem/imx-ocotp.c @@ -71,7 +71,7 @@ static struct nvmem_config imx_ocotp_nvmem_config = { static const struct of_device_id imx_ocotp_dt_ids[] = { { .compatible = "fsl,imx6q-ocotp", (void *)128 }, - { .compatible = "fsl,imx6sl-ocotp", (void *)32 }, + { .compatible = "fsl,imx6sl-ocotp", (void *)64 }, { .compatible = "fsl,imx6sx-ocotp", (void *)128 }, { }, }; |