ARM: dts/OMAP: Pinmux audio configuration for OMAP4+
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Cover letter [PATCH 0/9] ARM: dts/OMAP: Pinmux audio configuration for OMAP4+
Quoted 8 lines · Tony Lindgren
Quoted 7 lines · Peter Ujfalusi
Hello,
u-boot recently stopped configuring 'non essential' pin mux. This change leaves the audio essential pins in non configured state which prevents the use of audio. The following series makes sure that the needed pins are configured correctly by the kernel on OMAP4 and OMAP5.
Quoted 7 lines
Quoted 1 line
Tony: can this series queued for 3.7?
Let's see if that's possible to avoid mysterious bug reports of things not working.
If we can't merge it, then it might be worth adding a warning that bails out early after some pin is checked or similar.
With new enough u-boot the twl6040 fails to probe (mux for nirq2 and power GPIO is not configured) which leads to no audio on OMAP4/5. Adding another warning - and check - does not going to help to clarify the situation IMHO.
We can still enable the CONFIG_SYS_ENABLE_PADS_ALL in u-boot and recompile it, but this is disabled as default and to be frank there is no guaranty that this is going to be available let's say next week.
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