Re: [PATCH 0/4] OMAPDSS: DT support for N900 panel

[Sebastian Reichel <sre-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>]

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On Thu, Dec 19, 2013 at 11:08:40AM +0100, Sebastian Reichel wrote:
> > Are you able to check if the bootloader muxes dat3 to SDI mode?
> 
> The bootloader's source code is not available as far as i know.
> 
> [...], but I get an external abort on non-linefetch.
> So I can't check it :(

Ok. This is fixed by applying [0] (Thanks for the hint, Tomi!).
This is the mux configuration from the bootloader:

...
pin 96 (480020f0.0) 00000001 pinctrl-single     // sdi dat1n
pin 97 (480020f2.0) 00000001 pinctrl-single     // sdi dat1p
pin 98 (480020f4.0) 00000001 pinctrl-single     // sdi dat2n
pin 99 (480020f6.0) 00000001 pinctrl-single     // sdi dat2p
pin 100 (480020f8.0) 00000007 pinctrl-single    // sdi dat3n
pin 101 (480020fa.0) 00000007 pinctrl-single    // sdi dat3p
pin 102 (480020fc.0) 00000004 pinctrl-single 
pin 103 (480020fe.0) 00000004 pinctrl-single 
pin 104 (48002100.0) 00000004 pinctrl-single    // sdi vsync
pin 105 (48002102.0) 00004104 pinctrl-single    // sdi hsync
pin 106 (48002104.0) 00000004 pinctrl-single    // sdi den
pin 107 (48002106.0) 00000004 pinctrl-single    // sdi stp
pin 108 (48002108.0) 00000001 pinctrl-single    // sdi clkp
pin 109 (4800210a.0) 00000001 pinctrl-single    // sdi clkn
...

I guess the following entry should be added to the omap3-n900.dts file:

	dss_sdi_pins: pinmux_dss_sdi_pins {
		pinctrl-single,pins = <
			0x0c0 (PIN_OUTPUT | MUX_MODE1)   /* dss_data10.sdi_dat1n */
			0x0c2 (PIN_OUTPUT | MUX_MODE1)   /* dss_data11.sdi_dat1p */
			0x0c4 (PIN_OUTPUT | MUX_MODE1)   /* dss_data12.sdi_dat2n */
			0x0c6 (PIN_OUTPUT | MUX_MODE1)   /* dss_data13.sdi_dat2p */
			0x0d8 (PIN_OUTPUT | MUX_MODE1)   /* dss_data22.sdi_clkp */
			0x0da (PIN_OUTPUT | MUX_MODE1)   /* dss_data23.sdi_clkn */
		>;
	};

[0] https://patchwork.kernel.org/patch/3283781/

-- Sebastian

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