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video, ipu: make ldb clock frequency overwritable through board code

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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>
This commit is contained in:
Heiko Schocher 2015-04-20 07:53:48 +02:00 • committed by Anatolij Gustschin
parent 0ced25beb5
commit cb9f8e6a73
3 changed files with 9 additions and 1 deletions
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1
arch/arm/include/asm/imx-common/video.h
View file

@ -26,4 +26,5 @@ extern struct display_info_t const displays[];
extern size_t display_count;
#endif
int ipu_set_ldb_clock(int rate);
#endif

1
drivers/video/ipu.h
View file

@ -265,5 +265,4 @@ int ipu_dp_init(ipu_channel_t channel, uint32_t in_pixel_fmt,
void ipu_dp_uninit(ipu_channel_t channel);
void ipu_dp_dc_disable(ipu_channel_t channel, unsigned char swap);
ipu_color_space_t format_to_colorspace(uint32_t fmt);
#endif

8
drivers/video/ipu_common.c
View file

@ -1198,3 +1198,11 @@ ipu_color_space_t format_to_colorspace(uint32_t fmt)
}
return RGB;
}
/* should be removed when clk framework is availiable */
int ipu_set_ldb_clock(int rate)
{
ldb_clk.rate = rate;
return 0;
}