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| author | Tony Lindgren <tony@atomide.com> | 2013-02-11 09:40:45 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2013-02-11 09:40:45 -0800 |
| commit | 93b23711b7132400d4d76f31c660d27a2bb0afdb (patch) | |
| tree | 9de75a8020d78fc210f82451414bc0a09f6fa228 /arch/arm/mach-omap2/pm44xx.c | |
| parent | 88b62b915b0b7e25870eb0604ed9a92ba4bfc9f7 (diff) | |
| parent | a5a8c31d9f7587b601ecf0106c8abeabe3da24c3 (diff) | |
| download | olio-linux-3.10-93b23711b7132400d4d76f31c660d27a2bb0afdb.tar.xz olio-linux-3.10-93b23711b7132400d4d76f31c660d27a2bb0afdb.zip | |
Merge tag 'omap-devel-d2-for-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.9/pm-omap4
Some OMAP4 power management fixes and audio device integration
patches. This pull request contains a fix for an issue discovered during
branch integration.
Basic test logs are available at:
http://www.pwsan.com/omap/testlogs/omap4_prcm_devel_a_3.9/20130210112717/
Diffstat (limited to 'arch/arm/mach-omap2/pm44xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm44xx.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c index aa6fd98f606..ea62e75ef21 100644 --- a/arch/arm/mach-omap2/pm44xx.c +++ b/arch/arm/mach-omap2/pm44xx.c @@ -77,10 +77,20 @@ static int omap4_pm_suspend(void) omap_set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state); pwrdm_set_logic_retst(pwrst->pwrdm, pwrst->saved_logic_state); } - if (ret) + if (ret) { pr_crit("Could not enter target state in pm_suspend\n"); - else + /* + * OMAP4 chip PM currently works only with certain (newer) + * versions of bootloaders. This is due to missing code in the + * kernel to properly reset and initialize some devices. + * Warn the user about the bootloader version being one of the + * possible causes. + * http://www.spinics.net/lists/arm-kernel/msg218641.html + */ + pr_warn("A possible cause could be an old bootloader - try u-boot >= v2012.07\n"); + } else { pr_info("Successfully put all powerdomains to target state\n"); + } return 0; } @@ -146,6 +156,13 @@ int __init omap4_pm_init(void) } pr_err("Power Management for TI OMAP4.\n"); + /* + * OMAP4 chip PM currently works only with certain (newer) + * versions of bootloaders. This is due to missing code in the + * kernel to properly reset and initialize some devices. + * http://www.spinics.net/lists/arm-kernel/msg218641.html + */ + pr_warn("OMAP4 PM: u-boot >= v2012.07 is required for full PM support\n"); ret = pwrdm_for_each(pwrdms_setup, NULL); if (ret) { |