As the bootloader may not properly configure the L2CC, enforce its configuration
in the kernel.
Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
---
arch/arm/boot/dts/sama5d4.dtsi | 4 ++++
arch/arm/mach-at91/sama5.c | 3 +++
2 files changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi
index 07953f279a56..8998f14dda04 100644
--- a/arch/arm/boot/dts/sama5d4.dtsi
+++ b/arch/arm/boot/dts/sama5d4.dtsi
@@ -270,6 +270,10 @@
interrupts = <67 IRQ_TYPE_LEVEL_HIGH 4>;
cache-unified;
cache-level = <2>;
+ arm,double-linefill = <1>;
+ arm,double-linefill-incr = <1>;
+ arm,prefetch-drop = <1>;
+ arm,prefetch-offset = <1>;
};
nand0: nand@80000000 {
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index 03dcb441f3d2..a3df9328daa9 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -22,6 +22,7 @@
#include <mach/hardware.h>
#include <asm/setup.h>
+#include <asm/hardware/cache-l2x0.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -107,5 +108,7 @@ DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
.map_io = sama5_alt_map_io,
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_alt_dt_board_compat,
+ .l2c_aux_val = L310_AUX_CTRL_DATA_PREFETCH |
+ L310_AUX_CTRL_INSTR_PREFETCH,
.l2c_aux_mask = ~0UL,
MACHINE_END
--
2.1.0
--
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