The console devices are the only ones that can't
use the reset controller properly, as they get
registered from platform code. Reset those devices
from the clock controller.
Signed-off-by: Lucas Stach <dev@xxxxxxxxxx>
---
drivers/clk/tegra/clk-tegra20.c | 1 +
drivers/clk/tegra/clk-tegra30.c | 1 +
drivers/clk/tegra/clk.c | 11 +++++++++++
drivers/clk/tegra/clk.h | 2 ++
4 files changed, 15 insertions(+)
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c
index 7c7a915b40d4..cb0a57181de4 100644
--- a/drivers/clk/tegra/clk-tegra20.c
+++ b/drivers/clk/tegra/clk-tegra20.c
@@ -348,6 +348,7 @@ static int tegra20_car_probe(struct device_d *dev)
&clk_data);
tegra_clk_init_rst_controller(car_base, dev->device_node, 3 * 32);
+ tegra_clk_reset_uarts();
return 0;
}
diff --git a/drivers/clk/tegra/clk-tegra30.c b/drivers/clk/tegra/clk-tegra30.c
index adb5824e4be8..9536288f89ac 100644
--- a/drivers/clk/tegra/clk-tegra30.c
+++ b/drivers/clk/tegra/clk-tegra30.c
@@ -342,6 +342,7 @@ static int tegra30_car_probe(struct device_d *dev)
&clk_data);
tegra_clk_init_rst_controller(car_base, dev->device_node, 6 * 32);
+ tegra_clk_reset_uarts();
return 0;
}
diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
index a6b81d029b9e..cb4d92020392 100644
--- a/drivers/clk/tegra/clk.c
+++ b/drivers/clk/tegra/clk.c
@@ -187,3 +187,14 @@ void tegra_clk_init_rst_controller(void __iomem *base, struct device_node *np,
rst_ctlr.nr_resets = num;
reset_controller_register(&rst_ctlr);
}
+
+void tegra_clk_reset_uarts(void) {
+ int i;
+ int console_device_ids[] = {6, 7, 55, 65, 66};
+
+ for (i = 0; i < ARRAY_SIZE(console_device_ids); i++) {
+ rst_ops.assert(&rst_ctlr, console_device_ids[i]);
+ udelay(2);
+ rst_ops.deassert(&rst_ctlr, console_device_ids[i]);
+ }
+};
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index 29d5249b2ec4..6ce9f7e26daa 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -160,3 +160,5 @@ struct tegra_clk_periph_regs {
void tegra_clk_init_rst_controller(void __iomem *base, struct device_node *np,
unsigned int num);
+
+void tegra_clk_reset_uarts(void);
--
1.9.0
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