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| author | Lucas Stach <dev@lynxeye.de> | 2013-12-03 20:56:56 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-12-04 14:59:39 +0100 |
| commit | 7b6c063f5786b7552c2c8a97f3c57a3cd5b966a7 (patch) | |
| tree | 366089d320a4e2f6434e89ddbc1ba8e151953d96 /drivers/clk/tegra | |
| parent | c50a17104cb996c2b6e83da57c9f101164313798 (diff) | |
| download | barebox-7b6c063f5786b7552c2c8a97f3c57a3cd5b966a7.tar.gz barebox-7b6c063f5786b7552c2c8a97f3c57a3cd5b966a7.tar.xz | |
tegra: speed up system bus
We run the system bus from the OSC clock during init, to avoid crashing
the system while reconfiguring the PLLs.
Switch to a more reasonable clock when we are done with this.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/clk/tegra')
| -rw-r--r-- | drivers/clk/tegra/clk-tegra20.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c index e70f99a1fc..b94b7bc888 100644 --- a/drivers/clk/tegra/clk-tegra20.c +++ b/drivers/clk/tegra/clk-tegra20.c @@ -325,6 +325,13 @@ static int tegra20_car_probe(struct device_d *dev) tegra_init_from_table(init_table, clks, clk_max); + /* speed up system bus */ + writel(CRC_SCLK_BURST_POLICY_SYS_STATE_RUN << + CRC_SCLK_BURST_POLICY_SYS_STATE_SHIFT | + CRC_SCLK_BURST_POLICY_SRC_PLLC_OUT1 << + CRC_SCLK_BURST_POLICY_RUN_SRC_SHIFT, + car_base + CRC_SCLK_BURST_POLICY); + clk_data.clks = clks; clk_data.clk_num = ARRAY_SIZE(clks); of_clk_add_provider(dev->device_node, of_clk_src_onecell_get, |