diff options
| author | Bai Ping <b51503@freescale.com> | 2015-06-16 02:00:27 +0800 |
|---|---|---|
| committer | Bai Ping <b51503@freescale.com> | 2015-06-16 02:56:51 +0800 |
| commit | b16930c52cb512f4d53dd222715a65aa530cc6fe (patch) | |
| tree | a323f50f351443c609f7841e4d6682fb295a6597 | |
| parent | 08c92bade09d7b0e0864a3c2362dc5737b195e1c (diff) | |
MLK-11114 ARM: imx6: disable double linefill feature on 6QP
With L2 double linefill enabled, the stress reboot test failure
is met on USB(MLK10738) or SD3.0(MLK11072). By disabling L2 double
line fill, the stress reboot can pass. Note we are still investigating
on this issue to find the evidence how these issues are corelated with L2
double line fill
Signed-off-by: Bai Ping <b51503@freescale.com>
| -rw-r--r-- | arch/arm/mach-imx/system.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c index a428edf37268..49d23b29b03c 100644 --- a/arch/arm/mach-imx/system.c +++ b/arch/arm/mach-imx/system.c @@ -170,6 +170,13 @@ void __init imx_init_l2cache(void) if (((cache_id & L2X0_CACHE_ID_PART_MASK) == L2X0_CACHE_ID_PART_L310) && ((cache_id & L2X0_CACHE_ID_RTL_MASK) < L2X0_CACHE_ID_RTL_R3P2)) val &= ~(1 << 30); + + /* To 6DQP, double linefill leads to system unstable. Disable + * double linefill on these platform. + */ + if (cpu_is_imx6q() || imx_get_soc_revision() == IMX_CHIP_REVISION_2_0) + val &= ~(1 << 30); + writel_relaxed(val, l2x0_base + L2X0_PREFETCH_CTRL); val = L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN; writel_relaxed(val, l2x0_base + L2X0_POWER_CTRL); |