FUSEs (OTP registers) can be written via /dev/imx-ocotp character device.
For example, writing MAC 12:34:56:78:9A:BC can be performed as
> mw -l -d /dev/imx-ocotp 0x8c 0x00001234
> mw -l -d /dev/imx-ocotp 0x88 0x56789ABC
and reading as
> md -l -s /dev/imx-ocotp 0x88+8
00000088: 56789ABC 00001234
, where 0x88 (0x22*4) and 0x8C (0x23*4) are offsets of MAC OTP registers.
Notice: FUSEs are PROM, so "0" (unprogrammed) bits
can be replaced with "1" (but not vice versa) only once.
Also, for MAC there are convinient parameters:
> ocotp0.permanent_write_enable=1
> ocotp0.mac_addr=12:34:56:78:9A:BC
imx_ocotp 21bc000.ocotp: reloading shadow registers...
imx_ocotp 21bc000.ocotp: reloading shadow registers...
> echo $ocotp0.mac_addr
12:34:56:78:9A:BC
Signed-off-by: Uladzimir Bely <u.bely@sam-solutions.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds the IPU, LVDS and HDMI clocks. As these are many, depend
on the IPU driver being compiled in.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch gates the clocks to GPU, IPU, and VPU units by default,
significantly reducing the VDDSOC power draw while barebox is running.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The i.MX6 uses the same GPMI NAND controller as i.MX23/28 do. This adds
i.MX6 support to the driver.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This moves the CCM drivers to core_initcall since this has no dependencies.
This way we can be sure that the clock for the clocksource is available in
at postcore_initcall time.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In recent reference manuals the plls were renumbered. PLL8 now is
PLL6 and vice versa. Change the code according to the reference
manual to avoid confusion.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Uladzimir Bely
Sascha Hauer
Philipp Zabel