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[Bug 645324] Re: i2c-omap.c:omap_i2c_idle() writes to nonexistent register on OMAP3630

To: tiomap-dev@xxxxxxxxxxxxxxxxxxx
From: Linus Walleij <645324@xxxxxxxxxxxxxxxxxx>
Date: Mon, 16 Sep 2013 19:23:14 -0000
Reply-to: Bug 645324 <645324@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Project changed: linux-linaro => linaro-landing-team-ti

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https://bugs.launchpad.net/bugs/645324

Title:
  i2c-omap.c:omap_i2c_idle() writes to nonexistent register on OMAP3630

Status in Linaro Texas Instruments Landing Team:
  Confirmed

Bug description:
  If you boot the linaro beta image on qemu-maemo's beaglexm model:

  qemu-maemo-system-arm -M beaglexm -sd linaro-beta.img -clock unix -nographic
  then during bootup there are a large number of warning messages:
  omap_i2c_write: Bad register 0x000000ec

  The DM37x TRM section 17.6.2 (HS I2C Registers) only lists registers
  at offsets from 0x00 to 0x54, so I think the model is correct that
  0xEC is bogus. We should investigate what bit of the kernel is doing
  this and what it thinks it's doing.

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