[U-Boot] [PATCH v2 0/7] video: Support for SSD2828 (parallel LCD to MIPI bridge)

[Hans de Goede]

Hi,

On 19-01-15 04:23, Siarhei Siamashka wrote:
> This is the v2 of
>      http://lists.denx.de/pipermail/u-boot/2015-January/200807.html
>
> It addresses the review comments.
>
> One other change is the introduction of CONFIG_VIDEO_LCD_SSD2828_TX_CLK
> option. The Allwinner A20 reference tablet schematics suggests the use
> of 12MHz for 'tx_clk'. But the MSI Primo81 tablet has it as 27MHz. So it
> can be indeed different in different devices and deserves a config option.
> The patch "video: sunxi: Switch from 'tx_clk' to 'pclk' for SSD2828" had
> been dropped, because the Kconfig option makes it unnecessary.
>
> Other than MSI Primo81, there is at least one more tablet with SSD2828:
>      http://linux-sunxi.org/ICOU_Fatty_I
> Inspecting Android kernel sources indicates that two more GPIO pins
> are needed to support it. These changes can be submitted as a separate
> patchset later.

Thanks for doing a v2 of this.

I've queued up 1-6 with Anatolij's original acks where applicable in
u-boot-sunxi/next. I've not queued up 7/7:
"video: ssd2828: Use MIPI DCS commands to retrieve the LCD panel id"

As I'm still not 100% sold on this, I believe you've made it safe now,
but it still feels like needless chatter during boot on already supported
boards. So I would personally prefer to see it all under a #ifdef DEBUG
conditional. But since this now is a generic video chip driver it is
not my call :)

Anatolij can you please let us know what you think of 7/7:
"video: ssd2828: Use MIPI DCS commands to retrieve the LCD panel id"

If you like it as is, I'll add it to u-boot-sunxi/next, where the
others have already been merged.

Regards,

Hans


> Siarhei Siamashka (7):
>    sunxi: axp221: Add ELDO[1-3] support
>    include: Add header file with MIPI DSI constants from linux 3.18
>    video: Add support for SSD2828 (parallel LCD to MIPI bridge)
>    video: sunxi: Hook up SSD2828 with the sunxi video driver
>    sun6i: Add LCD display support for MSI Primo81 tablet
>    video: ssd2828: Allow using 'pclk' as the PLL clock source
>    video: ssd2828: Use MIPI DCS commands to retrieve the LCD panel id
>
>   board/sunxi/Kconfig           |   7 +
>   board/sunxi/board.c           |   1 +
>   configs/MSI_Primo81_defconfig |  10 +
>   drivers/power/Kconfig         |  10 +
>   drivers/power/axp221.c        |  33 +++
>   drivers/video/Kconfig         |  72 ++++++
>   drivers/video/Makefile        |   1 +
>   drivers/video/ssd2828.c       | 578 ++++++++++++++++++++++++++++++++++++++++++
>   drivers/video/ssd2828.h       | 128 ++++++++++
>   drivers/video/sunxi_display.c |  38 +++
>   include/axp221.h              |   7 +
>   include/mipi_display.h        | 130 ++++++++++
>   12 files changed, 1015 insertions(+)
>   create mode 100644 drivers/video/ssd2828.c
>   create mode 100644 drivers/video/ssd2828.h
>   create mode 100644 include/mipi_display.h
>