• Bastian Stender's avatar
    cpufreq: imx6q/thermal: imx: register cooling device depending on OF · a1d00154
    Bastian Stender authored
    The cooling device should be part of the i.MX cpufreq driver, but it
    cannot be removed for the sake of DT stability. So turn the cooling
    device registration into a separate function and perform the
    registration only if the CPU OF node does not have the #cooling-cells
    property.
    
    Use of_cpufreq_power_cooling_register in imx_thermal code to link the
    cooling device to the device tree node provided.
    
    This makes it possible to bind the cpufreq cooling device to a custom
    thermal zone via a cooling-maps entry like:
    
    	cooling-maps {
    		map0 {
    			trip = <&board_alert>;
    			cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
    		};
    	};
    
    Assuming a cpu node exists with label "cpu0" and #cooling-cells
    property.
    Signed-off-by: default avatarBastian Stender <bst@pengutronix.de>
    Reviewed-by: default avatarLucas Stach <l.stach@pengutronix.de>
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    a1d00154
imx6q-cpufreq.c 14.6 KB