dts: 'AI Camera' uses releasing gated clock

The clock using by IMX500 in 'AI Camera' is gpio-gated. The GPIO used is
provided by an I2C-controlled rpi-rp2040-gpio-bridge on 'AI Camera'.
Both the IMX500 and gpio-bridge share a common regulator for their power
supply. Using 'gpio-gate-clock', the 'AI Camera' will never be
powered-down as the GPIO provided by the gpio-bridge is always claimed
by the clock driver. Switching to 'gpio-gate-clock-releasing' causes the
GPIO to be released by the clock driver when the clock is not needed.
This allows 'AI Camera' to be powered-down.

Signed-off-by: Richard Oliver <[email protected]>

Author: roliver-rpi

arch/arm/boot/dts/overlays/imx500-overlay.dts

@@ -82,7 +82,7 @@
 			};
 
 			clk_aicam_gated: clk-aicam-gated1 {
-				compatible = "gpio-gate-clock";
+				compatible = "gpio-gate-clock-releasing";
 				clocks = <&clk_aicam>;
 				#clock-cells = <0>;
 				enable-gpios = <&spi_bridge 21 GPIO_ACTIVE_HIGH>;

arch/arm/boot/dts/overlays/imx500-pi5-overlay.dts

@@ -85,7 +85,7 @@
 			};
 
 			clk_aicam_gated: clk-aicam-gated1 {
-				compatible = "gpio-gate-clock";
+				compatible = "gpio-gate-clock-releasing";
 				clocks = <&clk_aicam>;
 				#clock-cells = <0>;
 				enable-gpios = <&spi_bridge 21 GPIO_ACTIVE_HIGH>;