Add a function to get the frequency of the AHB bus. Another stopgap

function until we have full clock support for imx6.

3 files changed, 14 insertions, 0 deletions

diff --git a/sys/arm/freescale/imx/imx51_ccm.c b/sys/arm/freescale/imx/imx51_ccm.c
index e004364..8e099ce5 100644
--- a/sys/arm/freescale/imx/imx51_ccm.c
+++ b/sys/arm/freescale/imx/imx51_ccm.c
@@ -580,3 +580,10 @@ imx_ccm_uart_hz(void)
 
 	return (imx51_get_clock(IMX51CLK_UART_CLK_ROOT));
 }
+
+uint32_t
+imx_ccm_ahb_hz(void)
+{
+
+	return (imx51_get_clock(IMX51CLK_AHB_CLK_ROOT));
+}
diff --git a/sys/arm/freescale/imx/imx6_ccm.c b/sys/arm/freescale/imx/imx6_ccm.c
index 132c31c..d722291 100644
--- a/sys/arm/freescale/imx/imx6_ccm.c
+++ b/sys/arm/freescale/imx/imx6_ccm.c
@@ -238,6 +238,12 @@ imx_ccm_uart_hz(void)
 	return (80000000);
 }
 
+uint32_t
+imx_ccm_ahb_hz(void)
+{
+	return (132000000);
+}
+
 static device_method_t ccm_methods[] = {
 	/* Device interface */
 	DEVMETHOD(device_probe,  ccm_probe),
diff --git a/sys/arm/freescale/imx/imx_ccmvar.h b/sys/arm/freescale/imx/imx_ccmvar.h
index bb41a02..354e616 100644
--- a/sys/arm/freescale/imx/imx_ccmvar.h
+++ b/sys/arm/freescale/imx/imx_ccmvar.h
@@ -47,6 +47,7 @@ uint32_t imx_ccm_ipg_hz(void);
 uint32_t imx_ccm_perclk_hz(void);
 uint32_t imx_ccm_sdhci_hz(void);
 uint32_t imx_ccm_uart_hz(void);
+uint32_t imx_ccm_ahb_hz(void);
 
 void imx_ccm_usb_enable(device_t _usbdev);
 void imx_ccm_usbphy_enable(device_t _phydev);