diff options
| author | Jason Liu <r64343@freescale.com> | 2013-09-13 06:28:20 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2013-09-13 09:53:50 +0800 |
| commit | 0f7948bd1eec54a4779eab4e58768018cb0635c9 (patch) | |
| tree | 73688186796cb02bd2de8d2857462f5646929e55 | |
| parent | b7d1aaa501b1f4f694c6f6b0816ec88ae01c398f (diff) | |
ENGR00279566: ARM: i.MX6: Enable L2 cache I/D prefetch function
This patch enable the L2 cache I/D prefetch function on the i.MX6 family.
Based on Android test result, it has the performance improvement:
Before the change:
JB4.3 RC1:
Browser Vellamo scores See The Sun Canvas: 51.16
Browser Vellamo scores Deep Sea Canvas: 65.41
Browser Vellamo scores Aquarium Canvas: 50.23
After the change:
Browser Vellamo scores See The Sun Canvas: 70.28
Browser Vellamo scores Deep Sea Canvas: 78.57
Browser Vellamo scores Aquarium Canvas: 53.73
Signed-off-by: Jason Liu <r64343@freescale.com>
(cherry picked from commit a51f75c318241c26bf7d41ad92c0e255b925863c)
| -rw-r--r-- | arch/arm/mach-mx6/mm.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm/mach-mx6/mm.c b/arch/arm/mach-mx6/mm.c index 8d2c715f336b..bdec4f879da9 100644 --- a/arch/arm/mach-mx6/mm.c +++ b/arch/arm/mach-mx6/mm.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2011-2012 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -111,6 +111,11 @@ int mxc_init_l2x0(void) writel(0x132, IO_ADDRESS(L2_BASE_ADDR + L2X0_TAG_LATENCY_CTRL)); writel(0x132, IO_ADDRESS(L2_BASE_ADDR + L2X0_DATA_LATENCY_CTRL)); + val = readl(IO_ADDRESS(L2_BASE_ADDR + L2X0_PREFETCH_CTRL)); + + /* Turn on the L2 I/D prefetch */ + val |= 0x30000000; + /* * The L2 cache controller(PL310) version on the i.MX6D/Q is r3p1-50rel0 * The L2 cache controller(PL310) version on the i.MX6DL/SOLO/SL is r3p2 @@ -120,11 +125,9 @@ int mxc_init_l2x0(void) * Workaround: The only workaround to this erratum is to disable the * double linefill feature. This is the default behavior. */ - if (!cpu_is_mx6q()) { - val = readl(IO_ADDRESS(L2_BASE_ADDR + L2X0_PREFETCH_CTRL)); + if (!cpu_is_mx6q()) val |= 0x40800000; - writel(val, IO_ADDRESS(L2_BASE_ADDR + L2X0_PREFETCH_CTRL)); - } + writel(val, IO_ADDRESS(L2_BASE_ADDR + L2X0_PREFETCH_CTRL)); val = readl(IO_ADDRESS(L2_BASE_ADDR + L2X0_POWER_CTRL)); val |= L2X0_DYNAMIC_CLK_GATING_EN; |