Multiplication, as "clk->parent->rate * 16" may overflow. So use
do_div to avoid such issue.
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Signed-off-by: Sandor Yu <sandor.yu@nxp.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
the ldb clock can be setup in board code (for example set through PLL5).
Update the ldb_clock rate also through board code.
This should be removed, if a clock framework is availiable.
Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
make the ldb_clock configurable through the new define
CONFIG_SYS_LDB_CLOCK. This is needed as the ldb clock is not
always 650000000, for example on the aristainetos2 board,
where the ldb clock derives from PLL5 clock.
Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
This patch checks self-clear sw_ipu_rst bit in
SCR register of SRC controller to be cleared
after setting it to high to reset IPUv3. This
makes sure that IPUv3 finishes sofware reset.
A timeout mechanism is added to stop polling
on the bit status in case the bit could not be
cleared by the hardware automatically within
10 millisecond.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Use clock gate definitions having names showing clearly the gated clock instead
of names giving only a register field index.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Add meaningful constants for each clock channels and use them for
enabling and disabling i.MX6 clocks.
Includes an update to enable/disable the IPU1 clock in
drivers/video/ipu_common to remove IMX5x register access
when used on i.MX6 as discussed in V1:
http://patchwork.ozlabs.org/patch/185129/
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Add ldb_clk for use in parenting the pixel clock.
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
The registers accessed inside clk_ipu_enable/disable are not present on MX6,
so make sure they only run on MX51 and MX53.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
The following erratum :
"ENGcm08316
IPU: Clarification regarding the bypass mode registers setup for
display and camera interfaces"
only applies to mx51, so restrict its usage for this SoC only.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
The patch is a porting of the IPU Linux driver
developed by Freescale to have framebuffer
functionalities in u-boot. The port is based on
kernel 2.6.31 commit cc4fe714041805997b601fe8e5dd585d8a99297f,
as delivered by Freescale [i.MX BSP].
Most features are dropped from the original driver and
only LCD support is the goal of this porting.
Signed-off-by: Stefano Babic <sbabic@denx.de>
