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net: gem: Check rate before setting it up

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On QEMU setting rate for fixed clock is failing. That's why check a rate
first if the rate is the same there is no need to ask for the change.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/bc465ffd4904bfd65208b782daa06732b915db54.1661502645.git.michal.simek@amd.com
This commit is contained in:
Michal Simek 2022-08-26 10:30:47 +02:00
parent aaf0793be3
commit bae7d37e52
1 changed files with 7 additions and 4 deletions
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11
drivers/net/zynq_gem.c
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@ -500,10 +500,13 @@ static int zynq_gem_init(struct udevice *dev)
}
#endif
ret = clk_set_rate(&priv->tx_clk, clk_rate);
if (IS_ERR_VALUE(ret)) {
dev_err(dev, "failed to set tx clock rate\n");
return ret;
ret = clk_get_rate(&priv->tx_clk);
if (ret != clk_rate) {
ret = clk_set_rate(&priv->tx_clk, clk_rate);
if (IS_ERR_VALUE(ret)) {
dev_err(dev, "failed to set tx clock rate %ld\n", clk_rate);
return ret;
}
}
ret = clk_enable(&priv->tx_clk);