[PATCH v2 3/6] ARM: mm: cache-l2x0: Use l2c_write_sec() for LATENCY_CTRL registers

Tomasz Figa
2014-06-25T13:38:24Z

According to the documentation, TAG_LATENCY_CTRL and DATA_LATENCY_CTRL
registers of L2C-310 can be written only in secure mode, so
l2c_write_sec() should be used to change them, instead of plain
writel_relaxed().

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
---
arch/arm/mm/cache-l2x0.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 478566b..6600fd9 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -622,10 +622,10 @@ static void l2c310_resume(void)
unsigned revision;

/* restore pl310 setup */
- writel_relaxed(l2x0_saved_regs.tag_latency,
- base + L310_TAG_LATENCY_CTRL);
- writel_relaxed(l2x0_saved_regs.data_latency,
- base + L310_DATA_LATENCY_CTRL);
+ l2c_write_sec(l2x0_saved_regs.tag_latency,
+ base, L310_TAG_LATENCY_CTRL);
+ l2c_write_sec(l2x0_saved_regs.data_latency,
+ base, L310_DATA_LATENCY_CTRL);
writel_relaxed(l2x0_saved_regs.filter_end,
base + L310_ADDR_FILTER_END);
writel_relaxed(l2x0_saved_regs.filter_start,
@@ -1024,20 +1024,20 @@ static void __init l2c310_of_parse(const struct device_node *np,

of_property_read_u32_array(np, "arm,tag-latency", tag, ARRAY_SIZE(tag));
if (tag[0] && tag[1] && tag[2])
- writel_relaxed(
+ l2c_write_sec(
L310_LATENCY_CTRL_RD(tag[0] - 1) |
L310_LATENCY_CTRL_WR(tag[1] - 1) |
L310_LATENCY_CTRL_SETUP(tag[2] - 1),
- l2x0_base + L310_TAG_LATENCY_CTRL);
+ l2x0_base, L310_TAG_LATENCY_CTRL);

of_property_read_u32_array(np, "arm,data-latency",
data, ARRAY_SIZE(data));
if (data[0] && data[1] && data[2])
- writel_relaxed(
+ l2c_write_sec(
L310_LATENCY_CTRL_RD(data[0] - 1) |
L310_LATENCY_CTRL_WR(data[1] - 1) |
L310_LATENCY_CTRL_SETUP(data[2] - 1),
- l2x0_base + L310_DATA_LATENCY_CTRL);
+ l2x0_base, L310_DATA_LATENCY_CTRL);

of_property_read_u32_array(np, "arm,filter-ranges",
filter, ARRAY_SIZE(filter));
--
1.9.3