[PATCH] clk: zynq: eval ps-clock-frequency from DT

[Steffen Trumtrar]

From: Kai Assman <kai.assmann at de.bosch.com>

Currently the ps_clk_rate is locked to 33.3MHz. The devicetree
provides a property "ps-clock-frequency" that specifies this clock.

If the property is found, overwrite ps_clk_rate otherwise stay at the
default 33.3MHz

Signed-off-by: Kai Assmann <kai.assmann at de.bosch.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
---
 drivers/clk/zynq/clkc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c
index 8e4beda295..37a0fbadb5 100644
--- a/drivers/clk/zynq/clkc.c
+++ b/drivers/clk/zynq/clkc.c
@@ -388,6 +388,9 @@ static int zynq_clock_probe(struct device *dev)
 			return PTR_ERR(parent_res);
 
 		slcr_offset = parent_res->start;
+
+		of_property_read_u32(dev->device_node, "ps-clock-frequency",
+				     (u32 *)&ps_clk_rate);
 	}
 
 	iores = request_iomem_region(dev_name(dev), iores->start + slcr_offset,
-- 
2.39.0