Sometimes a power domain didn't properly power up, reading back the command register seems to fix this by flushing the write. Signed-off-by: Lucas Stach <dev@xxxxxxxxxx> --- arch/arm/mach-tegra/tegra20-pmc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-tegra/tegra20-pmc.c b/arch/arm/mach-tegra/tegra20-pmc.c index d9f76e2..eaa5ac7 100644 --- a/arch/arm/mach-tegra/tegra20-pmc.c +++ b/arch/arm/mach-tegra/tegra20-pmc.c @@ -55,6 +55,8 @@ static int tegra_powergate_set(int id, bool new_state) } writel(PMC_PWRGATE_TOGGLE_START | id, pmc_base + PMC_PWRGATE_TOGGLE); + /* I don't know exactly why this is needed, seems to flush the write */ + readl(pmc_base + PMC_PWRGATE_TOGGLE); return 0; } -- 1.9.3 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
