arm64: dts: rockchip: add GRF GPIO controller to rk3328

Adding a GRF GPIO controller labled "grf_gpio" to rk3328, currently
providing access to the GPIO_MUTE pin, which is manupulated by the
GRF_SOC_CON10 register.

The GPIO_MUTE pin is referred to as <&grf_gpio 0>.

Signed-off-by: Levin Du <djw@t-chip.com.cn>
[dropped default-status disabled]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 3f5a2944300f..d3ef6566325e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -249,6 +249,12 @@
                         status = "disabled";
                 };
 
+                grf_gpio: grf-gpio {
+                        compatible = "rockchip,rk3328-grf-gpio";
+                        gpio-controller;
+                        #gpio-cells = <2>;
+                };
+
                 power: power-controller {
                         compatible = "rockchip,rk3328-power-controller";
                         #power-domain-cells = <1>;
@@ -274,7 +280,6 @@
                         mode-bootloader = <BOOT_FASTBOOT>;
                         mode-loader = <BOOT_BL_DOWNLOAD>;
                 };
-
         };
 
         uart0: serial@ff110000 {