From 532a54e65278564ac16878cda7146d247d8b3193 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen <dinguyen@kernel.org> Date: Sun, 3 Mar 2019 11:02:10 -0600 Subject: [PATCH] ARM: socfpga: fix data and tag latency values for pl310 cache controller The values for the data and tag latency settings on the PL310 caches controller is an (n-1). For example, the "arm,tag-latency" is specified as <1 1 1>, so the values that should be written to register should be 0x000. And for the "arm,data-latency" specified as <2 1 1>, the register value should be 0x010. Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> --- arch/arm/mach-socfpga/misc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-socfpga/misc.c b/arch/arm/mach-socfpga/misc.c index fcf211d62b..ec8339e045 100644 --- a/arch/arm/mach-socfpga/misc.c +++ b/arch/arm/mach-socfpga/misc.c @@ -62,8 +62,8 @@ 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); + writel(0x0, &pl310->pl310_tag_latency_ctrl); + writel(0x10, &pl310->pl310_data_latency_ctrl); /* enable BRESP, instruction and data prefetch, full line of zeroes */ setbits_le32(&pl310->pl310_aux_ctrl, -- 2.39.5