Re: [PATCH v2 1/9] ARM: i.MX28: define osc in DT

From: Juergen Beisert <redacted>

Instead of hardcoding the ref_xtal in the clk driver, get it from the DT.

Signed-off-by: Juergen Beisert <redacted>
Signed-off-by: Steffen Trumtrar <redacted>
---
 arch/arm/boot/dts/imx28.dtsi | 11 +++++++++++
 drivers/clk/mxs/clk-imx28.c  | 16 +++++++++++++++-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 7ba4966..b9e3712 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi

@@ -37,6 +37,17 @@
 		};
 	};
 
+	clocks {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		osc24m: system-oscillator {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <24000000>;
+		};
+	};
+
 	apb@80000000 {
 		compatible = "simple-bus";
 		#address-cells = <1>;

diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
index 76ce6c6..01048b5 100644
--- a/drivers/clk/mxs/clk-imx28.c
+++ b/drivers/clk/mxs/clk-imx28.c

@@ -158,7 +158,21 @@ int __init mx28_clocks_init(void)
 
 	clk_misc_init();
 
-	clks[ref_xtal] = mxs_clk_fixed("ref_xtal", 24000000);
+	/* retrieve the crystal's frequencies from device tree */
+	for_each_compatible_node(np, NULL, "fixed-clock") {
+		u32 rate;
+
+		if (of_property_read_u32(np, "clock-frequency", &rate))
+			continue;
+
+		if (of_device_is_compatible(np, "fsl,mxs-system"))