summaryrefslogtreecommitdiff
path: root/drivers/memory/tegra/mc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/memory/tegra/mc.c')
-rw-r--r--drivers/memory/tegra/mc.c34
1 files changed, 20 insertions, 14 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 0a53598d982f..163b6c69e651 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -51,6 +51,9 @@
#define MC_EMEM_ADR_CFG 0x54
#define MC_EMEM_ADR_CFG_EMEM_NUMDEV BIT(0)
+#define MC_TIMING_CONTROL 0xfc
+#define MC_TIMING_UPDATE BIT(0)
+
static const struct of_device_id tegra_mc_of_match[] = {
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
{ .compatible = "nvidia,tegra20-mc-gart", .data = &tegra20_mc_soc },
@@ -74,7 +77,7 @@ static const struct of_device_id tegra_mc_of_match[] = {
};
MODULE_DEVICE_TABLE(of, tegra_mc_of_match);
-static int terga_mc_block_dma_common(struct tegra_mc *mc,
+static int tegra_mc_block_dma_common(struct tegra_mc *mc,
const struct tegra_mc_reset *rst)
{
unsigned long flags;
@@ -90,13 +93,13 @@ static int terga_mc_block_dma_common(struct tegra_mc *mc,
return 0;
}
-static bool terga_mc_dma_idling_common(struct tegra_mc *mc,
+static bool tegra_mc_dma_idling_common(struct tegra_mc *mc,
const struct tegra_mc_reset *rst)
{
return (mc_readl(mc, rst->status) & BIT(rst->bit)) != 0;
}
-static int terga_mc_unblock_dma_common(struct tegra_mc *mc,
+static int tegra_mc_unblock_dma_common(struct tegra_mc *mc,
const struct tegra_mc_reset *rst)
{
unsigned long flags;
@@ -112,17 +115,17 @@ static int terga_mc_unblock_dma_common(struct tegra_mc *mc,
return 0;
}
-static int terga_mc_reset_status_common(struct tegra_mc *mc,
+static int tegra_mc_reset_status_common(struct tegra_mc *mc,
const struct tegra_mc_reset *rst)
{
return (mc_readl(mc, rst->control) & BIT(rst->bit)) != 0;
}
-const struct tegra_mc_reset_ops terga_mc_reset_ops_common = {
- .block_dma = terga_mc_block_dma_common,
- .dma_idling = terga_mc_dma_idling_common,
- .unblock_dma = terga_mc_unblock_dma_common,
- .reset_status = terga_mc_reset_status_common,
+const struct tegra_mc_reset_ops tegra_mc_reset_ops_common = {
+ .block_dma = tegra_mc_block_dma_common,
+ .dma_idling = tegra_mc_dma_idling_common,
+ .unblock_dma = tegra_mc_unblock_dma_common,
+ .reset_status = tegra_mc_reset_status_common,
};
static inline struct tegra_mc *reset_to_mc(struct reset_controller_dev *rcdev)
@@ -282,25 +285,28 @@ static int tegra_mc_setup_latency_allowance(struct tegra_mc *mc)
u32 value;
/* compute the number of MC clock cycles per tick */
- tick = mc->tick * clk_get_rate(mc->clk);
+ tick = (unsigned long long)mc->tick * clk_get_rate(mc->clk);
do_div(tick, NSEC_PER_SEC);
- value = readl(mc->regs + MC_EMEM_ARB_CFG);
+ value = mc_readl(mc, MC_EMEM_ARB_CFG);
value &= ~MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE_MASK;
value |= MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE(tick);
- writel(value, mc->regs + MC_EMEM_ARB_CFG);
+ mc_writel(mc, value, MC_EMEM_ARB_CFG);
/* write latency allowance defaults */
for (i = 0; i < mc->soc->num_clients; i++) {
const struct tegra_mc_la *la = &mc->soc->clients[i].la;
u32 value;
- value = readl(mc->regs + la->reg);
+ value = mc_readl(mc, la->reg);
value &= ~(la->mask << la->shift);
value |= (la->def & la->mask) << la->shift;
- writel(value, mc->regs + la->reg);
+ mc_writel(mc, value, la->reg);
}
+ /* latch new values */
+ mc_writel(mc, MC_TIMING_UPDATE, MC_TIMING_CONTROL);
+
return 0;
}