| Message ID | 1425939129-308-10-git-send-email-nm@ti.com |
|---|---|
| State | Accepted |
| Delegated to: | Tom Rini |
| Headers | show |
On Mon, Mar 09, 2015 at 05:12:07PM -0500, Nishanth Menon wrote: > Update to existing recommendation for L2ACTLR configuration to prevent > system instability and optimize performance. > > These apply to both OMAP5 and DRA7. > > Reported-by: Vivek Chengalvala <vchengalvala@ti.com> > Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
On Mon, Mar 09, 2015 at 05:12:07PM -0500, Nishanth Menon wrote: > Update to existing recommendation for L2ACTLR configuration to prevent > system instability and optimize performance. > > These apply to both OMAP5 and DRA7. > > Reported-by: Vivek Chengalvala <vchengalvala@ti.com> > Signed-off-by: Nishanth Menon <nm@ti.com> > Reviewed-by: Tom Rini <trini@konsulko.com> Applied to u-boot/master, thanks!
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c index f8060555b680..8d6b59eeb044 100644 --- a/arch/arm/cpu/armv7/omap5/hwinit.c +++ b/arch/arm/cpu/armv7/omap5/hwinit.c @@ -304,6 +304,21 @@ void config_data_eye_leveling_samples(u32 emif_base) (*ctrl)->control_emif2_sdram_config_ext); } +void init_cpu_configuration(void) +{ + u32 l2actlr; + + asm volatile("mrc p15, 1, %0, c15, c0, 0" : "=r"(l2actlr)); + /* + * L2ACTLR: Ensure to enable the following: + * 3: Disable clean/evict push to external + * 4: Disable WriteUnique and WriteLineUnique transactions from master + * 8: Disable DVM/CMO message broadcast + */ + l2actlr |= 0x118; + omap_smc1(OMAP5_SERVICE_L2ACTLR_SET, l2actlr); +} + void init_omap_revision(void) { /* @@ -342,6 +357,7 @@ void init_omap_revision(void) default: *omap_si_rev = OMAP5430_SILICON_ID_INVALID; } + init_cpu_configuration(); } void reset_cpu(ulong ignored)
Update to existing recommendation for L2ACTLR configuration to prevent system instability and optimize performance. These apply to both OMAP5 and DRA7. Reported-by: Vivek Chengalvala <vchengalvala@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/cpu/armv7/omap5/hwinit.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)