[PATCH 1/3] spi/bcm63xx-hsspi: allow providing clock rate through a second clock

[Jonas Gorski <jonas.gorski-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Instead of requiring the hsspi clock to have a rate, allow using a second
clock for providing the Hz rate, which is probably more correct anyway.

Signed-off-by: Jonas Gorski <jonas.gorski-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 drivers/spi/spi-bcm63xx-hsspi.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c
index 55789f7cda92..79096d17ebde 100644
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -351,8 +351,16 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 		return PTR_ERR(clk);
 
 	rate = clk_get_rate(clk);
-	if (!rate)
-		return -EINVAL;
+	if (!rate) {
+		struct clk *pll_clk = devm_clk_get(dev, "pll");
+
+		if (IS_ERR(pll_clk))
+			return PTR_ERR(pll_clk);
+
+		rate = clk_get_rate(pll_clk);
+		if (!rate)
+			return -EINVAL;
+	}
 
 	ret = clk_prepare_enable(clk);
 	if (ret)
-- 
2.11.0

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