[PATCH v2 05/21] ARM: tegra: clock: Disable clocks left on by bootloader
From: Olof Johansson <hidden>
Date: 2011-02-21 00:40:54
Also in:
linux-tegra, lkml
From: Olof Johansson <hidden>
Date: 2011-02-21 00:40:54
Also in:
linux-tegra, lkml
Hi, On Sat, Feb 19, 2011 at 2:25 PM, Colin Cross [off-list ref] wrote:
Adds CONFIG_TEGRA_DISABLE_BOOTLOADER_CLOCKS that iterates through all clocks, disabling any for which the refcount is 0 but the clock init detected the bootloader left the clock on.
I would argue that any kernel functionality that relies on clocks being left on my bootloader is buggy, and/or should at least have those clocks enabled in the static clock tables for the boards in question, since it creates an undocumented dependency on firmware. I would prefer if it disabled the clocks by default (after warning), but that there was a runtime way to override while debugging (i.e. add a bootarg 'keep_fwclocks' or similar to keep the firmware-enabled clocks running and just warn about them). -Olof