The ipu display insists on having a lower_margin smaller
then 2. If this is not the case it will attempt to force
it and adjust the pixclk accordingly. This multiplies pixclk
in Hz with the width and height, since this is typically
a * 10^7 * b * 10^2 * c * 10^2 this will overflow the
uint_32 and make things even worse. Since this is a
bootloader and the adjustment is neglectible, just force
it to two and warn about it.
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Since rgb2ycbcr_coeff and friends are declared const, but assigned
to a void pointer, clang will warn that the const is implicity casted
away. If the pointer is changed to void const * gcc will warn when it
is implicitly casted to a const int array. Just add a correctly
typed pointer instead to prevent these casts and hence the warnings.
Cc: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Instead of waiting for DC triple buffer to be cleared, this patch
changes to wait for a relevant DP sync flow end interrupt to come
when disabling sync BG flows. In this way, we align the implement
to the freescale internal IPUv3 driver. After applying this patch,
an uboot hang up issue at the arch_preboot_os() stage, where we
disable a relevant ipu display channel, is not observed any more on
some MX6DL platforms.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Currently the HDMI splash screen image quality on mx6solo does not show a
very stable image.
By comparing the IPU driver from U-boot with the one from FSL 4.1.0 BSP,
we can see that there is an inverted logic for setting the DI_GEN_POL_CLK bit.
>From FSL BSP [1] we have:
if (!sig.clk_pol)
di_gen |= DI_GEN_POLARITY_DISP_CLK;
Applying the same logic into U-boot fixes the HDMI image stability.
[1] git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/mxc/ipu3/ipu_disp.c?h=imx_3.0.35_4.1.0
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
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>
ipu_disp.c: In function ‘ipu_disp_set_global_alpha’:
ipu_disp.c:1237:11: warning: variable ‘flow’ set but not used
[-Wunused-but-set-variable]
ipu_disp.c: In function ‘ipu_disp_set_color_key’:
ipu_disp.c:1302:16: warning: variable ‘flow’ set but not used
[-Wunused-but-set-variable]
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
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>
Jeroen Hofstee
Liu Ying
Fabio Estevam
Wolfgang Denk
Eric Nelson
Marek Vasut
Stefano Babic