ARM: imx: Add cpu frequency scaling support

Re-using iMX6Q driver for cpu frequency scaling.

Signed-off-by: John Tobias <john.tobias.ph@gmail.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c
index cca183a..0f4fd4c 100644 (file)
--- a/arch/arm/mach-imx/mach-imx6sl.c
+++ b/arch/arm/mach-imx/mach-imx6sl.c
@@ -34,6 +34,13 @@ static void __init imx6sl_fec_init(void)
        }
 }
 
+static void __init imx6sl_init_late(void)
+{
+       /* imx6sl reuses imx6q cpufreq driver */
+       if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
+               platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
+}
+
 static void __init imx6sl_init_machine(void)
 {
        struct device *parent;
@@ -70,6 +77,7 @@ DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
        .map_io         = debug_ll_io_init,
        .init_irq       = imx6sl_init_irq,
        .init_machine   = imx6sl_init_machine,
+       .init_late      = imx6sl_init_late,
        .dt_compat      = imx6sl_dt_compat,
        .restart        = mxc_restart,
 MACHINE_END