brcm63xx: register SPI controllers through DT

Register SPI controllers through device tree. We will wire up the clocks
at a later stage.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-4.4/001-4.12-04-spi-bcm63xx-hsspi-allow-providing-clock-rate-through.patch b/target/linux/brcm63xx/patches-4.4/001-4.12-04-spi-bcm63xx-hsspi-allow-providing-clock-rate-through.patch
new file mode 100644
index 0000000000..30e6734686
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.4/001-4.12-04-spi-bcm63xx-hsspi-allow-providing-clock-rate-through.patch
@@ -0,0 +1,35 @@
+From d03f23df6ff47898d76f06b3aa5dadcfa1ec8f4f Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jonas.gorski@gmail.com>
+Date: Sun, 19 Feb 2017 23:40:22 +0100
+Subject: [PATCH 1/3] spi/bcm63xx-hsspi: allow providing clock rate through a
+ second clock
+
+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@gmail.com>
+---
+ drivers/spi/spi-bcm63xx-hsspi.c | 12 ++++++++++--
+ 1 file changed, 10 insertions(+), 2 deletions(-)
+
+--- a/drivers/spi/spi-bcm63xx-hsspi.c
++++ b/drivers/spi/spi-bcm63xx-hsspi.c
+@@ -351,8 +351,16 @@ static int bcm63xx_hsspi_probe(struct pl
+ 		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)