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cpts: specify the input clock frequency via DT

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This patch adds a way to configure the CPTS input clock scaling factors
via the device tree.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Cochran
2012-10-29 08:45:19 +00:00
committed by David S. Miller
parent 78ca0b2873
commit 00ab94eeaf
3 changed files with 22 additions and 0 deletions
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14
drivers/net/ethernet/ti/cpsw.c
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@@ -854,6 +854,20 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
}
data->cpts_active_slave = prop;
if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
pr_err("Missing cpts_clock_mult property in the DT.\n");
ret = -EINVAL;
goto error_ret;
}
data->cpts_clock_mult = prop;
if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
pr_err("Missing cpts_clock_shift property in the DT.\n");
ret = -EINVAL;
goto error_ret;
}
data->cpts_clock_shift = prop;
data->slave_data = kzalloc(sizeof(struct cpsw_slave_data) *
data->slaves, GFP_KERNEL);
if (!data->slave_data) {