From: Juergen Beisert <jbe@xxxxxxxxxxxxxx>
The RTC in the i.MX28 may be clocked with different crystals. Get the rate of
the connected one from the DT.
Signed-off-by: Juergen Beisert <jbe@xxxxxxxxxxxxxx>
Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/clock/imx28-clock.txt | 1 +
arch/arm/boot/dts/imx28.dtsi | 5 +++++
drivers/clk/mxs/clk-imx28.c | 4 +++-
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/clock/imx28-clock.txt b/Documentation/devicetree/bindings/clock/imx28-clock.txt
index e6587af..c3a9d94 100644
--- a/Documentation/devicetree/bindings/clock/imx28-clock.txt
+++ b/Documentation/devicetree/bindings/clock/imx28-clock.txt
@@ -76,6 +76,7 @@ clocks and IDs.
usb0_phy 62
usb1_phy 63
enet_out 64
+ rtc_32k 65
Examples:
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 979c37d..6af9094 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -47,6 +47,11 @@
#address-cells = <1>;
#size-cells = <0>;
+ xtal-32k {
+ compatible = "fsl,mxs-xtal-32k", "fixed-clock";
+ clock-frequency = <0>;
+ };
+
xtal-24m {
compatible = "fsl,mxs-xtal-24m", "fixed-clock";
clock-frequency = <24000000>;
diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
index 874ca4e..b6afeb1 100644
--- a/drivers/clk/mxs/clk-imx28.c
+++ b/drivers/clk/mxs/clk-imx28.c
@@ -144,7 +144,7 @@ enum imx28_clk {
clk32k_div, rtc, lradc, spdif_div, clk32k, pwm, uart, ssp0,
ssp1, ssp2, ssp3, gpmi, spdif, emi, saif0, saif1, lcdif, etm,
fec, can0, can1, usb0, usb1, usb0_phy, usb1_phy, enet_out,
- clk_max
+ rtc_32k, clk_max
};
static struct clk *clks[clk_max];
@@ -178,6 +178,8 @@ int __init mx28_clocks_init(void)
if (of_device_is_compatible(np_tmp, "fsl,mxs-xtal-24m"))
clks[ref_xtal] = mxs_clk_fixed("ref_xtal", rate);
+ else if (of_device_is_compatible(np_tmp, "fsl,mxs-xtal-32k"))
+ clks[rtc_32k] = mxs_clk_fixed("rtc_32k", rate);
}
/* if not set, use default frequency */
--
1.8.4.rc3
--
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