From: Stefan Christ <s.christ@phytec.de>
To: barebox@lists.infradead.org
Subject: [PATCH] ARM: i.MX6: clarify usage of /dev/imx-ocotp
Date: Tue, 14 Jul 2015 13:55:14 +0200 [thread overview]
Message-ID: <1436874914-7750-1-git-send-email-s.christ@phytec.de> (raw)
Explain the relationship between the OCOTP addresses from the i.MX6
Reference Manual and the file offset in '/dev/imx-ocotp'.
Signed-off-by: Stefan Christ <s.christ@phytec.de>
---
arch/arm/mach-imx/Kconfig | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index f8f6004..147c411 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -676,8 +676,10 @@ config IMX_OCOTP_WRITE
prompt "Enable write support of i.MX6 CPUs OTP fuses"
depends on IMX_OCOTP
help
- This adds write support to IMX6 On-Chip OTP registers.
- Example of set MAC to 12:34:56:78:9A:BC (2 words with offset 0x22 * 4):
+ This adds write support to IMX6 On-Chip OTP registers. Example of set
+ MAC to 12:34:56:78:9A:BC (2 words with address 0x22 (OCOTP_MAC0) and
+ address 0x23 (OCOTP_MAC1)). To calculate the file offset multiply
+ the value of the address by 4.
mw -l -d /dev/imx-ocotp 0x8C 0x00001234
mw -l -d /dev/imx-ocotp 0x88 0x56789ABC
--
1.9.1
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next reply other threads:[~2015-07-14 11:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-14 11:55 Stefan Christ [this message]
2015-07-20 5:39 ` Sascha Hauer
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