Set SRAM latency to 3 clock cycles.
Signed-off-by: Lucas Stach <dev@xxxxxxxxxx>
---
arch/arm/mach-tegra/tegra_maincomplex_init.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-tegra/tegra_maincomplex_init.c b/arch/arm/mach-tegra/tegra_maincomplex_init.c
index 83ad33d..17490a4 100644
--- a/arch/arm/mach-tegra/tegra_maincomplex_init.c
+++ b/arch/arm/mach-tegra/tegra_maincomplex_init.c
@@ -25,6 +25,8 @@
void tegra_maincomplex_entry(void)
{
uint32_t rambase, ramsize;
+ enum tegra_chiptype chiptype;
+ u32 reg = 0;
arm_cpu_lowlevel_init();
@@ -36,7 +38,16 @@ void tegra_maincomplex_entry(void)
TEGRA_CLK_RESET_BASE + CRC_CCLK_BURST_POLICY);
writel(CRC_SUPER_CDIV_ENB, TEGRA_CLK_RESET_BASE + CRC_SUPER_CCLK_DIV);
- switch (tegra_get_chiptype()) {
+ chiptype = tegra_get_chiptype();
+
+ if (chiptype >= TEGRA114) {
+ asm("mrc p15, 1, %0, c9, c0, 2" : : "r" (reg));
+ reg &= ~7;
+ reg |= 2;
+ asm("mcr p15, 1, %0, c9, c0, 2" : : "r" (reg));
+ }
+
+ switch (chiptype) {
case TEGRA20:
rambase = 0x0;
ramsize = tegra20_get_ramsize();
--
1.9.3
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