On Monday 15 April 2013 01:01 PM, Lucas Stach wrote:
The USB clocks are just clock gates, so no need to set a specific clock.
In fact trying to set a specific clock is just a NOP if the requested
clockrate is the same as those of the parent (clk_m) or will trigger a
WARN_ON() if rates don't match up.
As we are not setting a specific rate, nor activating the clocks at
init, there is no point in keeping the the usb entries in the clock init
table.
Signed-off-by: Lucas Stach <dev@xxxxxxxxxx>
---
Trace produced by system with 13MHz clk_m:
Reviewed-by: Prashant Gaikwad <pgaikwad@xxxxxxxxxx>
tegra_init_from_table: Failed to set rate 12000000 of usbd
------------[ cut here ]------------
WARNING: at drivers/clk/tegra/clk.c:64
tegra_init_from_table+0xc0/0x158()
Modules linked in:
[<c0013a84>] (unwind_backtrace+0x0/0xf8) from
[<c0021a24>](warn_slowpath_common+0x4c/0x64)
[<c0021a24>] (warn_slowpath_common+0x4c/0x64) from [<c0021a58>]
(warn_slowpath_null+0x1c/0x24)
[<c0021a58>] (warn_slowpath_null+0x1c/0x24) from [<c069343c>]
(tegra_init_from_table+0xc0/0x158)
[<c069343c>] (tegra_init_from_table+0xc0/0x158) from [<c0694878>]
(tegra20_clock_init+0x1398/0x13d4)
[<c0694878>] (tegra20_clock_init+0x1398/0x13d4) from [<c0693298>]
(of_clk_init+0x30/0x58)
[<c0693298>] (of_clk_init+0x30/0x58) from [<c0681e5c>]
(tegra_dt_init_irq+0x8/0x1c)
[<c0681e5c>] (tegra_dt_init_irq+0x8/0x1c) from [<c067d334>]
(init_IRQ+0x14/0x1c)
[<c067d334>] (init_IRQ+0x14/0x1c) from [<c067b6b4>]
(start_kernel+0x1a0/0x2f8)
[<c067b6b4>] (start_kernel+0x1a0/0x2f8) from [<0000807c>] (0x807c)
---[ end trace 1b75b31a2719ed1c ]---
---
drivers/clk/tegra/clk-tegra20.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c
index f873dce..a73278f 100644
--- a/drivers/clk/tegra/clk-tegra20.c
+++ b/drivers/clk/tegra/clk-tegra20.c
@@ -1259,9 +1259,6 @@ static __initdata struct tegra_clk_init_table init_table[] = {
{uartc, pll_p, 0, 0},
{uartd, pll_p, 0, 0},
{uarte, pll_p, 0, 0},
- {usbd, clk_max, 12000000, 0},
- {usb2, clk_max, 12000000, 0},
- {usb3, clk_max, 12000000, 0},
{pll_a, clk_max, 56448000, 1},
{pll_a_out0, clk_max, 11289600, 1},
{cdev1, clk_max, 0, 1},
--
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