diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.1/075-ARM-8391-1-l2c-add-options-to-overwrite-prefetching-.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.1/075-ARM-8391-1-l2c-add-options-to-overwrite-prefetching-.patch | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/target/linux/bcm53xx/patches-4.1/075-ARM-8391-1-l2c-add-options-to-overwrite-prefetching-.patch b/target/linux/bcm53xx/patches-4.1/075-ARM-8391-1-l2c-add-options-to-overwrite-prefetching-.patch deleted file mode 100644 index 857d2c4380..0000000000 --- a/target/linux/bcm53xx/patches-4.1/075-ARM-8391-1-l2c-add-options-to-overwrite-prefetching-.patch +++ /dev/null @@ -1,60 +0,0 @@ -From ec3bd0e68a679a7af2c46af1ddc9af8b534a8b0e Mon Sep 17 00:00:00 2001 -From: Hauke Mehrtens <hauke@hauke-m.de> -Date: Wed, 10 Jun 2015 20:23:24 +0100 -Subject: [PATCH] ARM: 8391/1: l2c: add options to overwrite prefetching - behavior - -These options make it possible to overwrites the data and instruction -prefetching behavior of the arm pl310 cache controller. - -Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> -Acked-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> ---- - Documentation/devicetree/bindings/arm/l2cc.txt | 5 +++++ - arch/arm/mm/cache-l2x0.c | 20 ++++++++++++++++++++ - 2 files changed, 25 insertions(+) - ---- a/Documentation/devicetree/bindings/arm/l2cc.txt -+++ b/Documentation/devicetree/bindings/arm/l2cc.txt -@@ -67,6 +67,11 @@ Optional properties: - disable if zero. - - arm,prefetch-offset : Override prefetch offset value. Valid values are - 0-7, 15, 23, and 31. -+- prefetch-data : Data prefetch. Value: <0> (forcibly disable), <1> -+ (forcibly enable), property absent (retain settings set by firmware) -+- prefetch-instr : Instruction prefetch. Value: <0> (forcibly disable), -+ <1> (forcibly enable), property absent (retain settings set by -+ firmware) - - Example: - ---- a/arch/arm/mm/cache-l2x0.c -+++ b/arch/arm/mm/cache-l2x0.c -@@ -1221,6 +1221,26 @@ static void __init l2c310_of_parse(const - pr_err("L2C-310 OF arm,prefetch-offset property value is missing\n"); - } - -+ ret = of_property_read_u32(np, "prefetch-data", &val); -+ if (ret == 0) { -+ if (val) -+ prefetch |= L310_PREFETCH_CTRL_DATA_PREFETCH; -+ else -+ prefetch &= ~L310_PREFETCH_CTRL_DATA_PREFETCH; -+ } else if (ret != -EINVAL) { -+ pr_err("L2C-310 OF prefetch-data property value is missing\n"); -+ } -+ -+ ret = of_property_read_u32(np, "prefetch-instr", &val); -+ if (ret == 0) { -+ if (val) -+ prefetch |= L310_PREFETCH_CTRL_INSTR_PREFETCH; -+ else -+ prefetch &= ~L310_PREFETCH_CTRL_INSTR_PREFETCH; -+ } else if (ret != -EINVAL) { -+ pr_err("L2C-310 OF prefetch-instr property value is missing\n"); -+ } -+ - l2x0_saved_regs.prefetch_ctrl = prefetch; - } - |