[PATCH v2 4/7] ARM: at91/dt: split sama5d3 lcd pin definitions to match RGB mode configs

Hello Bo,

On 19/06/2014 09:07, Bo Shen wrote:

Hi Boris,

On 06/10/2014 12:04 AM, Boris BREZILLON wrote:

quoted

The HLCDC (High LCD Controller) IP supports 4 different output mode
(RGB444, RGB565, RGB666 and RGB888) and the pin muxing depends on the
chosen RGB mode.

Split the pin definition to be able to set the pin config according
to the
selected mode.

Signed-off-by: Boris BREZILLON <redacted>
---
  arch/arm/boot/dts/sama5d3_lcd.dtsi | 127
++++++++++++++++++++++++++++---------
  1 file changed, 96 insertions(+), 31 deletions(-)

On sama5d3xek board, it only works in 24bits output mode. And it
depends on the hardware design. So, I think only keep only one pinctrl
configuration.

I'm not describing a specific board design but rather SoC capabilities
(this dtsi is SoC related not board related), and the sama5d3 SoC
supports 4 different RGB output modes through the RGB connector.

If you take a look at patch 7, you'll see that I chose mode 3 (which is
RGB888), and given this mode the HLCDC driver (atmel_hlcdc_panel.c) will
request the appropriate pin state:

atmel,panel = <&panel 3 0>;


Best Regards,

Boris

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com