From 2c0b300bc30881c09519d1f7bfa46a04b0d6d1d5 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Tue, 19 Feb 2019 01:11:24 +0100 Subject: [PATCH] ARM: socfpga: Configure PL310 latencies Configure the PL310 tag and data latency registers, which slightly improves performance and aligns the behavior with Linux. Signed-off-by: Marek Vasut Cc: Dalon Westergreen Cc: Dinh Nguyen --- arch/arm/mach-socfpga/misc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/mach-socfpga/misc.c b/arch/arm/mach-socfpga/misc.c index e1adea143c..fcf211d62b 100644 --- a/arch/arm/mach-socfpga/misc.c +++ b/arch/arm/mach-socfpga/misc.c @@ -62,6 +62,9 @@ void v7_outer_cache_enable(void) /* Disable the L2 cache */ clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN); + writel(0x111, &pl310->pl310_tag_latency_ctrl); + writel(0x121, &pl310->pl310_data_latency_ctrl); + /* enable BRESP, instruction and data prefetch, full line of zeroes */ setbits_le32(&pl310->pl310_aux_ctrl, L310_AUX_CTRL_DATA_PREFETCH_MASK | -- 2.25.1